add

backend/pom.xml

@@ -0,0 +1,74 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.nursinghome</groupId>
+    <artifactId>nursing-home-backend</artifactId>
+    <version>1.0.0</version>
+    <name>nursing-home-backend</name>
+
+    <properties>
+        <java.version>17</java.version>
+        <spring.boot.version>3.2.5</spring.boot.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${spring.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>3.0.3</version>
+        </dependency>
+        <dependency>
+            <groupId>com.mysql</groupId>
+            <artifactId>mysql-connector-j</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>cn.dev33</groupId>
+            <artifactId>sa-token-spring-boot3-starter</artifactId>
+            <version>1.37.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-crypto</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

backend/sql/schema.sql

@@ -0,0 +1,143 @@
+CREATE DATABASE IF NOT EXISTS nursing_home DEFAULT CHARACTER SET utf8mb4;
+USE nursing_home;
+
+DROP TABLE IF EXISTS payment_record;
+DROP TABLE IF EXISTS bill;
+DROP TABLE IF EXISTS feedback;
+DROP TABLE IF EXISTS notice;
+DROP TABLE IF EXISTS handover;
+DROP TABLE IF EXISTS health_record;
+DROP TABLE IF EXISTS care_record;
+DROP TABLE IF EXISTS schedule;
+DROP TABLE IF EXISTS family_elder;
+DROP TABLE IF EXISTS elder;
+DROP TABLE IF EXISTS sys_user;
+
+CREATE TABLE sys_user (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  username VARCHAR(50) NOT NULL UNIQUE,
+  password VARCHAR(100) NOT NULL,
+  name VARCHAR(50) NOT NULL,
+  phone VARCHAR(30),
+  role VARCHAR(20) NOT NULL,
+  status TINYINT NOT NULL DEFAULT 1,
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+);
+
+CREATE TABLE elder (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  name VARCHAR(50) NOT NULL,
+  gender VARCHAR(10),
+  id_card VARCHAR(30) NOT NULL UNIQUE,
+  birthday DATE,
+  room_no VARCHAR(20),
+  check_in_date DATE,
+  care_level VARCHAR(20),
+  status VARCHAR(20),
+  remark VARCHAR(200)
+);
+
+CREATE TABLE family_elder (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  family_id BIGINT NOT NULL,
+  elder_id BIGINT NOT NULL,
+  relationship VARCHAR(20),
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  INDEX idx_family (family_id),
+  INDEX idx_elder (elder_id)
+);
+
+CREATE TABLE schedule (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  nurse_id BIGINT NOT NULL,
+  date DATE NOT NULL,
+  shift VARCHAR(20),
+  task VARCHAR(200),
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  INDEX idx_nurse_date (nurse_id, date)
+);
+
+CREATE TABLE care_record (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  elder_id BIGINT NOT NULL,
+  nurse_id BIGINT NOT NULL,
+  content VARCHAR(500),
+  attachment_url VARCHAR(200),
+  record_time DATETIME,
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  INDEX idx_elder (elder_id)
+);
+
+CREATE TABLE health_record (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  elder_id BIGINT NOT NULL,
+  nurse_id BIGINT NOT NULL,
+  temperature DECIMAL(4,1),
+  bp_systolic INT,
+  bp_diastolic INT,
+  heart_rate INT,
+  note VARCHAR(200),
+  record_time DATETIME,
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  INDEX idx_elder (elder_id)
+);
+
+CREATE TABLE handover (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  nurse_id BIGINT NOT NULL,
+  date DATE NOT NULL,
+  content VARCHAR(500),
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  INDEX idx_nurse (nurse_id)
+);
+
+CREATE TABLE notice (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  title VARCHAR(100) NOT NULL,
+  content VARCHAR(1000),
+  target_role VARCHAR(20),
+  target_user_id BIGINT,
+  created_by BIGINT,
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE feedback (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  family_id BIGINT NOT NULL,
+  elder_id BIGINT NOT NULL,
+  type VARCHAR(20),
+  content VARCHAR(500),
+  rating INT,
+  status VARCHAR(20),
+  reply VARCHAR(500),
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+);
+
+CREATE TABLE bill (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  elder_id BIGINT NOT NULL,
+  month VARCHAR(7) NOT NULL,
+  bed_fee DECIMAL(10,2),
+  care_fee DECIMAL(10,2),
+  meal_fee DECIMAL(10,2),
+  other_fee DECIMAL(10,2),
+  total DECIMAL(10,2),
+  status VARCHAR(20),
+  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+  paid_at DATETIME
+);
+
+CREATE TABLE payment_record (
+  id BIGINT PRIMARY KEY AUTO_INCREMENT,
+  bill_id BIGINT NOT NULL,
+  family_id BIGINT NOT NULL,
+  amount DECIMAL(10,2) NOT NULL,
+  method VARCHAR(20),
+  paid_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+INSERT INTO sys_user(username, password, name, phone, role, status)
+VALUES ('admin', 'admin123', 'Administrator', '13800000000', 'ADMIN', 1);

backend/src/main/java/com/nursinghome/NursingHomeApplication.java

@@ -0,0 +1,13 @@
+package com.nursinghome;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+@MapperScan("com.nursinghome.mapper")
+public class NursingHomeApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(NursingHomeApplication.class, args);
+    }
+}

backend/src/main/java/com/nursinghome/common/ApiException.java

@@ -0,0 +1,7 @@
+package com.nursinghome.common;
+
+public class ApiException extends RuntimeException {
+    public ApiException(String message) {
+        super(message);
+    }
+}

backend/src/main/java/com/nursinghome/common/ApiResponse.java

@@ -0,0 +1,51 @@
+package com.nursinghome.common;
+
+public class ApiResponse<T> {
+    private int code;
+    private String message;
+    private T data;
+
+    public ApiResponse() {}
+
+    public ApiResponse(int code, String message, T data) {
+        this.code = code;
+        this.message = message;
+        this.data = data;
+    }
+
+    public static <T> ApiResponse<T> success(T data) {
+        return new ApiResponse<>(0, "ok", data);
+    }
+
+    public static <T> ApiResponse<T> success() {
+        return new ApiResponse<>(0, "ok", null);
+    }
+
+    public static <T> ApiResponse<T> error(String message) {
+        return new ApiResponse<>(1, message, null);
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+    public void setCode(int code) {
+        this.code = code;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public T getData() {
+        return data;
+    }
+
+    public void setData(T data) {
+        this.data = data;
+    }
+}

backend/src/main/java/com/nursinghome/common/GlobalExceptionHandler.java

@@ -0,0 +1,25 @@
+package com.nursinghome.common;
+
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+    @ExceptionHandler(ApiException.class)
+    public ApiResponse<Void> handleApi(ApiException ex) {
+        return ApiResponse.error(ex.getMessage());
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ApiResponse<Void> handleValid(MethodArgumentNotValidException ex) {
+        String msg = ex.getBindingResult().getAllErrors().isEmpty()
+            ? "validation error" : ex.getBindingResult().getAllErrors().get(0).getDefaultMessage();
+        return ApiResponse.error(msg);
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ApiResponse<Void> handle(Exception ex) {
+        return ApiResponse.error(ex.getMessage());
+    }
+}

backend/src/main/java/com/nursinghome/config/CorsConfig.java

@@ -0,0 +1,17 @@
+package com.nursinghome.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class CorsConfig implements WebMvcConfigurer {
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**")
+            .allowedOriginPatterns("*")
+            .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
+            .allowedHeaders("*")
+            .allowCredentials(true);
+    }
+}

backend/src/main/java/com/nursinghome/config/SaTokenStpInterfaceImpl.java

@@ -0,0 +1,32 @@
+package com.nursinghome.config;
+
+import cn.dev33.satoken.stp.StpInterface;
+import com.nursinghome.entity.User;
+import com.nursinghome.mapper.UserMapper;
+import org.springframework.stereotype.Component;
+
+import java.util.Collections;
+import java.util.List;
+
+@Component
+public class SaTokenStpInterfaceImpl implements StpInterface {
+    private final UserMapper userMapper;
+
+    public SaTokenStpInterfaceImpl(UserMapper userMapper) {
+        this.userMapper = userMapper;
+    }
+
+    @Override
+    public List<String> getPermissionList(Object loginId, String loginType) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public List<String> getRoleList(Object loginId, String loginType) {
+        User user = userMapper.findById(Long.valueOf(loginId.toString()));
+        if (user == null) {
+            return Collections.emptyList();
+        }
+        return Collections.singletonList(user.getRole());
+    }
+}

backend/src/main/java/com/nursinghome/config/WebConfig.java

@@ -0,0 +1,23 @@
+package com.nursinghome.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+    @Value("${app.upload-dir}")
+    private String uploadDir;
+
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        Path uploadPath = Paths.get(uploadDir).toAbsolutePath().normalize();
+        String location = uploadPath.toUri().toString();
+        registry.addResourceHandler("/files/**")
+            .addResourceLocations(location);
+    }
+}

backend/src/main/java/com/nursinghome/controller/AdminController.java

@@ -0,0 +1,246 @@
+package com.nursinghome.controller;
+
+import cn.dev33.satoken.annotation.SaCheckRole;
+import cn.dev33.satoken.stp.StpUtil;
+import com.nursinghome.common.ApiException;
+import com.nursinghome.common.ApiResponse;
+import com.nursinghome.dto.*;
+import com.nursinghome.entity.*;
+import com.nursinghome.mapper.*;
+import com.nursinghome.service.BillService;
+import com.nursinghome.service.ElderService;
+import com.nursinghome.service.UserService;
+import com.nursinghome.util.PasswordUtil;
+import org.springframework.web.bind.annotation.*;
+
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/admin")
+@SaCheckRole("ADMIN")
+public class AdminController {
+    private final UserService userService;
+    private final ElderService elderService;
+    private final ScheduleMapper scheduleMapper;
+    private final FeedbackMapper feedbackMapper;
+    private final NoticeMapper noticeMapper;
+    private final BillService billService;
+    private final BillMapper billMapper;
+    private final UserMapper userMapper;
+
+    public AdminController(UserService userService,
+                           ElderService elderService,
+                           ScheduleMapper scheduleMapper,
+                           FeedbackMapper feedbackMapper,
+                           NoticeMapper noticeMapper,
+                           BillService billService,
+                           BillMapper billMapper,
+                           UserMapper userMapper) {
+        this.userService = userService;
+        this.elderService = elderService;
+        this.scheduleMapper = scheduleMapper;
+        this.feedbackMapper = feedbackMapper;
+        this.noticeMapper = noticeMapper;
+        this.billService = billService;
+        this.billMapper = billMapper;
+        this.userMapper = userMapper;
+    }
+
+    @GetMapping("/stats")
+    public ApiResponse<Map<String, Object>> stats() {
+        int elders = elderService.listAll().size();
+        int nurses = userService.listByRole("NURSE").size();
+        int families = userService.listByRole("FAMILY").size();
+        BigDecimal income = BigDecimal.ZERO;
+        for (Bill bill : billMapper.listAll()) {
+            if ("PAID".equals(bill.getStatus()) && bill.getTotal() != null) {
+                income = income.add(bill.getTotal());
+            }
+        }
+        Map<String, Object> data = new HashMap<>();
+        data.put("elders", elders);
+        data.put("nurses", nurses);
+        data.put("families", families);
+        data.put("income", income);
+        return ApiResponse.success(data);
+    }
+
+    @GetMapping("/users")
+    public ApiResponse<List<User>> listUsers(@RequestParam(required = false) String role) {
+        List<User> users = userService.listByRole(role);
+        for (User user : users) {
+            user.setPassword(null);
+        }
+        return ApiResponse.success(users);
+    }
+
+    @PostMapping("/users")
+    public ApiResponse<User> createUser(@RequestBody UserRequest request) {
+        User user = new User();
+        user.setUsername(request.getUsername());
+        user.setPassword(request.getPassword());
+        user.setName(request.getName());
+        user.setPhone(request.getPhone());
+        user.setRole(request.getRole());
+        user.setStatus(request.getStatus() == null ? 1 : request.getStatus());
+        userService.createUser(user, true);
+        user.setPassword(null);
+        return ApiResponse.success(user);
+    }
+
+    @PutMapping("/users")
+    public ApiResponse<Void> updateUser(@RequestBody UserUpdateRequest request) {
+        User user = new User();
+        user.setId(request.getId());
+        user.setName(request.getName());
+        user.setPhone(request.getPhone());
+        user.setStatus(request.getStatus());
+        userService.updateUser(user);
+        return ApiResponse.success();
+    }
+
+    @PutMapping("/users/{id}/status")
+    public ApiResponse<Void> updateUserStatus(@PathVariable Long id, @RequestParam Integer status) {
+        userService.updateStatus(id, status);
+        return ApiResponse.success();
+    }
+
+    @PostMapping("/users/{id}/reset-password")
+    public ApiResponse<Void> resetPassword(@PathVariable Long id, @RequestParam String password) {
+        userService.updatePassword(id, PasswordUtil.hash(password));
+        return ApiResponse.success();
+    }
+
+    @GetMapping("/elders")
+    public ApiResponse<List<Elder>> listElders() {
+        return ApiResponse.success(elderService.listAll());
+    }
+
+    @PostMapping("/elders")
+    public ApiResponse<Elder> createElder(@RequestBody ElderRequest request) {
+        Elder elder = new Elder();
+        elder.setName(request.getName());
+        elder.setGender(request.getGender());
+        elder.setIdCard(request.getIdCard());
+        elder.setBirthday(request.getBirthday());
+        elder.setRoomNo(request.getRoomNo());
+        elder.setCheckInDate(request.getCheckInDate());
+        elder.setCareLevel(request.getCareLevel());
+        elder.setStatus(request.getStatus());
+        elder.setRemark(request.getRemark());
+        return ApiResponse.success(elderService.create(elder));
+    }
+
+    @PutMapping("/elders")
+    public ApiResponse<Void> updateElder(@RequestBody ElderRequest request) {
+        Elder elder = new Elder();
+        elder.setId(request.getId());
+        elder.setName(request.getName());
+        elder.setGender(request.getGender());
+        elder.setIdCard(request.getIdCard());
+        elder.setBirthday(request.getBirthday());
+        elder.setRoomNo(request.getRoomNo());
+        elder.setCheckInDate(request.getCheckInDate());
+        elder.setCareLevel(request.getCareLevel());
+        elder.setStatus(request.getStatus());
+        elder.setRemark(request.getRemark());
+        elderService.update(elder);
+        return ApiResponse.success();
+    }
+
+    @DeleteMapping("/elders/{id}")
+    public ApiResponse<Void> deleteElder(@PathVariable Long id) {
+        elderService.delete(id);
+        return ApiResponse.success();
+    }
+
+    @GetMapping("/schedules")
+    public ApiResponse<List<Schedule>> listSchedules(@RequestParam String date) {
+        return ApiResponse.success(scheduleMapper.listByDate(java.time.LocalDate.parse(date)));
+    }
+
+    @PostMapping("/schedules")
+    public ApiResponse<Schedule> createSchedule(@RequestBody ScheduleRequest request) {
+        Schedule schedule = new Schedule();
+        schedule.setNurseId(request.getNurseId());
+        schedule.setDate(request.getDate());
+        schedule.setShift(request.getShift());
+        schedule.setTask(request.getTask());
+        scheduleMapper.insert(schedule);
+        return ApiResponse.success(schedule);
+    }
+
+    @PutMapping("/schedules")
+    public ApiResponse<Void> updateSchedule(@RequestBody ScheduleRequest request) {
+        Schedule schedule = new Schedule();
+        schedule.setId(request.getId());
+        schedule.setNurseId(request.getNurseId());
+        schedule.setDate(request.getDate());
+        schedule.setShift(request.getShift());
+        schedule.setTask(request.getTask());
+        scheduleMapper.update(schedule);
+        return ApiResponse.success();
+    }
+
+    @DeleteMapping("/schedules/{id}")
+    public ApiResponse<Void> deleteSchedule(@PathVariable Long id) {
+        scheduleMapper.delete(id);
+        return ApiResponse.success();
+    }
+
+    @PostMapping("/bills")
+    public ApiResponse<Bill> createBill(@RequestBody BillRequest request) {
+        Bill bill = new Bill();
+        bill.setElderId(request.getElderId());
+        bill.setMonth(request.getMonth());
+        bill.setBedFee(request.getBedFee());
+        bill.setCareFee(request.getCareFee());
+        bill.setMealFee(request.getMealFee());
+        bill.setOtherFee(request.getOtherFee());
+        return ApiResponse.success(billService.createBill(bill));
+    }
+
+    @GetMapping("/bills")
+    public ApiResponse<List<Bill>> listBills(@RequestParam(required = false) Long elderId) {
+        if (elderId == null) {
+            return ApiResponse.success(billMapper.listAll());
+        }
+        return ApiResponse.success(billService.listByElderId(elderId));
+    }
+
+    @GetMapping("/feedback")
+    public ApiResponse<List<Feedback>> listFeedback() {
+        return ApiResponse.success(feedbackMapper.listAll());
+    }
+
+    @PutMapping("/feedback")
+    public ApiResponse<Void> updateFeedback(@RequestBody FeedbackUpdateRequest request) {
+        Feedback feedback = new Feedback();
+        feedback.setId(request.getId());
+        feedback.setStatus(request.getStatus());
+        feedback.setReply(request.getReply());
+        feedbackMapper.updateStatus(feedback);
+        return ApiResponse.success();
+    }
+
+    @PostMapping("/notices")
+    public ApiResponse<Notice> createNotice(@RequestBody NoticeRequest request) {
+        Notice notice = new Notice();
+        notice.setTitle(request.getTitle());
+        notice.setContent(request.getContent());
+        notice.setTargetRole(request.getTargetRole());
+        notice.setTargetUserId(request.getTargetUserId());
+        notice.setCreatedBy(Long.valueOf(StpUtil.getLoginId().toString()));
+        noticeMapper.insert(notice);
+        return ApiResponse.success(notice);
+    }
+
+    @GetMapping("/notices")
+    public ApiResponse<List<Notice>> listNotices(@RequestParam(required = false) String role,
+                                                 @RequestParam(required = false) Long userId) {
+        return ApiResponse.success(noticeMapper.listByTarget(role, userId));
+    }
+}

backend/src/main/java/com/nursinghome/controller/AuthController.java

@@ -0,0 +1,84 @@
+package com.nursinghome.controller;
+
+import cn.dev33.satoken.annotation.SaCheckLogin;
+import cn.dev33.satoken.stp.StpUtil;
+import com.nursinghome.common.ApiException;
+import com.nursinghome.common.ApiResponse;
+import com.nursinghome.dto.LoginRequest;
+import com.nursinghome.dto.RegisterRequest;
+import com.nursinghome.entity.User;
+import com.nursinghome.service.FamilyService;
+import com.nursinghome.service.UserService;
+import com.nursinghome.util.PasswordUtil;
+import jakarta.validation.Valid;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/auth")
+public class AuthController {
+    private final UserService userService;
+    private final FamilyService familyService;
+
+    public AuthController(UserService userService, FamilyService familyService) {
+        this.userService = userService;
+        this.familyService = familyService;
+    }
+
+    @PostMapping("/login")
+    public ApiResponse<Map<String, Object>> login(@Valid @RequestBody LoginRequest request) {
+        User user = userService.findByUsername(request.getUsername());
+        if (user == null) {
+            throw new ApiException("user not found");
+        }
+        if (user.getStatus() != null && user.getStatus() == 0) {
+            throw new ApiException("user disabled");
+        }
+        if (!PasswordUtil.matches(request.getPassword(), user.getPassword())) {
+            throw new ApiException("invalid password");
+        }
+        if (!PasswordUtil.isBcrypt(user.getPassword())) {
+            userService.updatePassword(user.getId(), PasswordUtil.hash(request.getPassword()));
+        }
+        StpUtil.login(user.getId());
+
+        user.setPassword(null);
+        Map<String, Object> data = new HashMap<>();
+        data.put("token", StpUtil.getTokenValue());
+        data.put("role", user.getRole());
+        data.put("user", user);
+        return ApiResponse.success(data);
+    }
+
+    @PostMapping("/register")
+    public ApiResponse<User> register(@Valid @RequestBody RegisterRequest request) {
+        User user = familyService.registerFamily(
+            request.getUsername(),
+            request.getPassword(),
+            request.getName(),
+            request.getPhone(),
+            request.getElderIdCard(),
+            request.getRelationship()
+        );
+        return ApiResponse.success(user);
+    }
+
+    @PostMapping("/logout")
+    public ApiResponse<Void> logout() {
+        StpUtil.logout();
+        return ApiResponse.success();
+    }
+
+    @GetMapping("/me")
+    @SaCheckLogin
+    public ApiResponse<User> me() {
+        Long userId = Long.valueOf(StpUtil.getLoginId().toString());
+        User user = userService.findById(userId);
+        if (user != null) {
+            user.setPassword(null);
+        }
+        return ApiResponse.success(user);
+    }
+}

backend/src/main/java/com/nursinghome/controller/FamilyController.java

@@ -0,0 +1,157 @@
+package com.nursinghome.controller;
+
+import cn.dev33.satoken.annotation.SaCheckRole;
+import cn.dev33.satoken.stp.StpUtil;
+import com.nursinghome.common.ApiException;
+import com.nursinghome.common.ApiResponse;
+import com.nursinghome.dto.FeedbackRequest;
+import com.nursinghome.dto.PayRequest;
+import com.nursinghome.entity.*;
+import com.nursinghome.mapper.*;
+import com.nursinghome.service.BillService;
+import com.nursinghome.service.FamilyService;
+import org.springframework.web.bind.annotation.*;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/family")
+@SaCheckRole("FAMILY")
+public class FamilyController {
+    private final FamilyService familyService;
+    private final ElderMapper elderMapper;
+    private final CareRecordMapper careRecordMapper;
+    private final HealthRecordMapper healthRecordMapper;
+    private final BillService billService;
+    private final BillMapper billMapper;
+    private final NoticeMapper noticeMapper;
+    private final FeedbackMapper feedbackMapper;
+
+    public FamilyController(FamilyService familyService,
+                            ElderMapper elderMapper,
+                            CareRecordMapper careRecordMapper,
+                            HealthRecordMapper healthRecordMapper,
+                            BillService billService,
+                            BillMapper billMapper,
+                            NoticeMapper noticeMapper,
+                            FeedbackMapper feedbackMapper) {
+        this.familyService = familyService;
+        this.elderMapper = elderMapper;
+        this.careRecordMapper = careRecordMapper;
+        this.healthRecordMapper = healthRecordMapper;
+        this.billService = billService;
+        this.billMapper = billMapper;
+        this.noticeMapper = noticeMapper;
+        this.feedbackMapper = feedbackMapper;
+    }
+
+    @GetMapping("/elders")
+    public ApiResponse<List<Elder>> listElders() {
+        Long familyId = Long.valueOf(StpUtil.getLoginId().toString());
+        List<FamilyElder> relations = familyService.listRelations(familyId);
+        List<Elder> elders = new ArrayList<>();
+        for (FamilyElder relation : relations) {
+            Elder elder = elderMapper.findById(relation.getElderId());
+            if (elder != null) {
+                elders.add(elder);
+            }
+        }
+        return ApiResponse.success(elders);
+    }
+
+    @GetMapping("/care-records")
+    public ApiResponse<List<CareRecord>> listCare(@RequestParam Long elderId) {
+        Long familyId = Long.valueOf(StpUtil.getLoginId().toString());
+        boolean allowed = false;
+        for (FamilyElder relation : familyService.listRelations(familyId)) {
+            if (relation.getElderId().equals(elderId)) {
+                allowed = true;
+                break;
+            }
+        }
+        if (!allowed) {
+            throw new ApiException("no access to this elder");
+        }
+        return ApiResponse.success(careRecordMapper.listByElderId(elderId));
+    }
+
+    @GetMapping("/health-records")
+    public ApiResponse<List<HealthRecord>> listHealth(@RequestParam Long elderId) {
+        Long familyId = Long.valueOf(StpUtil.getLoginId().toString());
+        boolean allowed = false;
+        for (FamilyElder relation : familyService.listRelations(familyId)) {
+            if (relation.getElderId().equals(elderId)) {
+                allowed = true;
+                break;
+            }
+        }
+        if (!allowed) {
+            throw new ApiException("no access to this elder");
+        }
+        return ApiResponse.success(healthRecordMapper.listByElderId(elderId));
+    }
+
+    @GetMapping("/bills")
+    public ApiResponse<List<Bill>> listBills(@RequestParam Long elderId) {
+        Long familyId = Long.valueOf(StpUtil.getLoginId().toString());
+        boolean allowed = false;
+        for (FamilyElder relation : familyService.listRelations(familyId)) {
+            if (relation.getElderId().equals(elderId)) {
+                allowed = true;
+                break;
+            }
+        }
+        if (!allowed) {
+            throw new ApiException("no access to this elder");
+        }
+        return ApiResponse.success(billService.listByElderId(elderId));
+    }
+
+    @PostMapping("/bills/{id}/pay")
+    public ApiResponse<Void> pay(@PathVariable Long id, @RequestBody PayRequest request) {
+        Long familyId = Long.valueOf(StpUtil.getLoginId().toString());
+        Bill bill = billMapper.findById(id);
+        if (bill == null) {
+            throw new ApiException("bill not found");
+        }
+        boolean allowed = false;
+        for (FamilyElder relation : familyService.listRelations(familyId)) {
+            if (relation.getElderId().equals(bill.getElderId())) {
+                allowed = true;
+                break;
+            }
+        }
+        if (!allowed) {
+            throw new ApiException("no access to this bill");
+        }
+        if ("PAID".equals(bill.getStatus())) {
+            throw new ApiException("bill already paid");
+        }
+        BigDecimal amount = bill.getTotal() == null ? BigDecimal.ZERO : bill.getTotal();
+        billService.payBill(id, familyId, request.getMethod(), amount);
+        return ApiResponse.success();
+    }
+
+    @PostMapping("/feedback")
+    public ApiResponse<Feedback> createFeedback(@RequestBody FeedbackRequest request) {
+        Feedback feedback = new Feedback();
+        feedback.setFamilyId(Long.valueOf(StpUtil.getLoginId().toString()));
+        feedback.setElderId(request.getElderId());
+        feedback.setType(request.getType());
+        feedback.setContent(request.getContent());
+        feedback.setRating(request.getRating());
+        feedback.setStatus("NEW");
+        feedback.setCreatedAt(LocalDateTime.now());
+        feedbackMapper.insert(feedback);
+        return ApiResponse.success(feedback);
+    }
+
+    @GetMapping("/notices")
+    public ApiResponse<List<Notice>> listNotices() {
+        Long familyId = Long.valueOf(StpUtil.getLoginId().toString());
+        return ApiResponse.success(noticeMapper.listByTarget("FAMILY", familyId));
+    }
+}

backend/src/main/java/com/nursinghome/controller/FileController.java

@@ -0,0 +1,42 @@
+package com.nursinghome.controller;
+
+import com.nursinghome.common.ApiResponse;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api/files")
+public class FileController {
+    @Value("${app.upload-dir}")
+    private String uploadDir;
+
+    @PostMapping("/upload")
+    public ApiResponse<Map<String, Object>> upload(@RequestParam("file") MultipartFile file) throws IOException {
+        if (file.isEmpty()) {
+            return ApiResponse.error("empty file");
+        }
+        String original = file.getOriginalFilename();
+        String ext = StringUtils.getFilenameExtension(original);
+        String name = UUID.randomUUID().toString().replace("-", "");
+        if (ext != null && !ext.isEmpty()) {
+            name = name + "." + ext;
+        }
+        File dir = new File(uploadDir);
+        if (!dir.exists()) {
+            dir.mkdirs();
+        }
+        File dest = new File(dir, name);
+        file.transferTo(dest);
+        Map<String, Object> data = new HashMap<>();
+        data.put("url", "/files/" + name);
+        return ApiResponse.success(data);
+    }
+}

backend/src/main/java/com/nursinghome/controller/NurseController.java

@@ -0,0 +1,101 @@
+package com.nursinghome.controller;
+
+import cn.dev33.satoken.annotation.SaCheckRole;
+import cn.dev33.satoken.stp.StpUtil;
+import com.nursinghome.common.ApiResponse;
+import com.nursinghome.dto.CareRecordRequest;
+import com.nursinghome.dto.HandoverRequest;
+import com.nursinghome.dto.HealthRecordRequest;
+import com.nursinghome.entity.*;
+import com.nursinghome.mapper.*;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/nurse")
+@SaCheckRole("NURSE")
+public class NurseController {
+    private final ScheduleMapper scheduleMapper;
+    private final CareRecordMapper careRecordMapper;
+    private final HealthRecordMapper healthRecordMapper;
+    private final HandoverMapper handoverMapper;
+    private final NoticeMapper noticeMapper;
+
+    public NurseController(ScheduleMapper scheduleMapper,
+                           CareRecordMapper careRecordMapper,
+                           HealthRecordMapper healthRecordMapper,
+                           HandoverMapper handoverMapper,
+                           NoticeMapper noticeMapper) {
+        this.scheduleMapper = scheduleMapper;
+        this.careRecordMapper = careRecordMapper;
+        this.healthRecordMapper = healthRecordMapper;
+        this.handoverMapper = handoverMapper;
+        this.noticeMapper = noticeMapper;
+    }
+
+    @GetMapping("/schedules")
+    public ApiResponse<List<Schedule>> listSchedules(@RequestParam String date) {
+        Long nurseId = Long.valueOf(StpUtil.getLoginId().toString());
+        return ApiResponse.success(scheduleMapper.listByNurseAndDate(nurseId, java.time.LocalDate.parse(date)));
+    }
+
+    @PostMapping("/care-records")
+    public ApiResponse<CareRecord> createCare(@RequestBody CareRecordRequest request) {
+        CareRecord record = new CareRecord();
+        record.setElderId(request.getElderId());
+        record.setNurseId(Long.valueOf(StpUtil.getLoginId().toString()));
+        record.setContent(request.getContent());
+        record.setAttachmentUrl(request.getAttachmentUrl());
+        record.setRecordTime(request.getRecordTime() == null ? java.time.LocalDateTime.now() : request.getRecordTime());
+        careRecordMapper.insert(record);
+        return ApiResponse.success(record);
+    }
+
+    @GetMapping("/care-records")
+    public ApiResponse<List<CareRecord>> listCare(@RequestParam Long elderId) {
+        return ApiResponse.success(careRecordMapper.listByElderId(elderId));
+    }
+
+    @PostMapping("/health-records")
+    public ApiResponse<HealthRecord> createHealth(@RequestBody HealthRecordRequest request) {
+        HealthRecord record = new HealthRecord();
+        record.setElderId(request.getElderId());
+        record.setNurseId(Long.valueOf(StpUtil.getLoginId().toString()));
+        record.setTemperature(request.getTemperature());
+        record.setBpSystolic(request.getBpSystolic());
+        record.setBpDiastolic(request.getBpDiastolic());
+        record.setHeartRate(request.getHeartRate());
+        record.setNote(request.getNote());
+        record.setRecordTime(request.getRecordTime() == null ? java.time.LocalDateTime.now() : request.getRecordTime());
+        healthRecordMapper.insert(record);
+        return ApiResponse.success(record);
+    }
+
+    @GetMapping("/health-records")
+    public ApiResponse<List<HealthRecord>> listHealth(@RequestParam Long elderId) {
+        return ApiResponse.success(healthRecordMapper.listByElderId(elderId));
+    }
+
+    @PostMapping("/handovers")
+    public ApiResponse<Handover> createHandover(@RequestBody HandoverRequest request) {
+        Handover handover = new Handover();
+        handover.setNurseId(Long.valueOf(StpUtil.getLoginId().toString()));
+        handover.setDate(request.getDate());
+        handover.setContent(request.getContent());
+        handoverMapper.insert(handover);
+        return ApiResponse.success(handover);
+    }
+
+    @GetMapping("/handovers")
+    public ApiResponse<List<Handover>> listHandovers() {
+        Long nurseId = Long.valueOf(StpUtil.getLoginId().toString());
+        return ApiResponse.success(handoverMapper.listByNurseId(nurseId));
+    }
+
+    @GetMapping("/notices")
+    public ApiResponse<List<Notice>> listNotices() {
+        Long nurseId = Long.valueOf(StpUtil.getLoginId().toString());
+        return ApiResponse.success(noticeMapper.listByTarget("NURSE", nurseId));
+    }
+}

backend/src/main/java/com/nursinghome/dto/BillRequest.java

@@ -0,0 +1,60 @@
+package com.nursinghome.dto;
+
+import java.math.BigDecimal;
+
+public class BillRequest {
+    private Long elderId;
+    private String month;
+    private BigDecimal bedFee;
+    private BigDecimal careFee;
+    private BigDecimal mealFee;
+    private BigDecimal otherFee;
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public String getMonth() {
+        return month;
+    }
+
+    public void setMonth(String month) {
+        this.month = month;
+    }
+
+    public BigDecimal getBedFee() {
+        return bedFee;
+    }
+
+    public void setBedFee(BigDecimal bedFee) {
+        this.bedFee = bedFee;
+    }
+
+    public BigDecimal getCareFee() {
+        return careFee;
+    }
+
+    public void setCareFee(BigDecimal careFee) {
+        this.careFee = careFee;
+    }
+
+    public BigDecimal getMealFee() {
+        return mealFee;
+    }
+
+    public void setMealFee(BigDecimal mealFee) {
+        this.mealFee = mealFee;
+    }
+
+    public BigDecimal getOtherFee() {
+        return otherFee;
+    }
+
+    public void setOtherFee(BigDecimal otherFee) {
+        this.otherFee = otherFee;
+    }
+}

backend/src/main/java/com/nursinghome/dto/CareRecordRequest.java

@@ -0,0 +1,42 @@
+package com.nursinghome.dto;
+
+import java.time.LocalDateTime;
+
+public class CareRecordRequest {
+    private Long elderId;
+    private String content;
+    private String attachmentUrl;
+    private LocalDateTime recordTime;
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public String getAttachmentUrl() {
+        return attachmentUrl;
+    }
+
+    public void setAttachmentUrl(String attachmentUrl) {
+        this.attachmentUrl = attachmentUrl;
+    }
+
+    public LocalDateTime getRecordTime() {
+        return recordTime;
+    }
+
+    public void setRecordTime(LocalDateTime recordTime) {
+        this.recordTime = recordTime;
+    }
+}

backend/src/main/java/com/nursinghome/dto/ElderRequest.java

@@ -0,0 +1,96 @@
+package com.nursinghome.dto;
+
+import java.time.LocalDate;
+
+public class ElderRequest {
+    private Long id;
+    private String name;
+    private String gender;
+    private String idCard;
+    private LocalDate birthday;
+    private String roomNo;
+    private LocalDate checkInDate;
+    private String careLevel;
+    private String status;
+    private String remark;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getGender() {
+        return gender;
+    }
+
+    public void setGender(String gender) {
+        this.gender = gender;
+    }
+
+    public String getIdCard() {
+        return idCard;
+    }
+
+    public void setIdCard(String idCard) {
+        this.idCard = idCard;
+    }
+
+    public java.time.LocalDate getBirthday() {
+        return birthday;
+    }
+
+    public void setBirthday(java.time.LocalDate birthday) {
+        this.birthday = birthday;
+    }
+
+    public String getRoomNo() {
+        return roomNo;
+    }
+
+    public void setRoomNo(String roomNo) {
+        this.roomNo = roomNo;
+    }
+
+    public java.time.LocalDate getCheckInDate() {
+        return checkInDate;
+    }
+
+    public void setCheckInDate(java.time.LocalDate checkInDate) {
+        this.checkInDate = checkInDate;
+    }
+
+    public String getCareLevel() {
+        return careLevel;
+    }
+
+    public void setCareLevel(String careLevel) {
+        this.careLevel = careLevel;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getRemark() {
+        return remark;
+    }
+
+    public void setRemark(String remark) {
+        this.remark = remark;
+    }
+}

backend/src/main/java/com/nursinghome/dto/FeedbackRequest.java

@@ -0,0 +1,40 @@
+package com.nursinghome.dto;
+
+public class FeedbackRequest {
+    private Long elderId;
+    private String type;
+    private String content;
+    private Integer rating;
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public Integer getRating() {
+        return rating;
+    }
+
+    public void setRating(Integer rating) {
+        this.rating = rating;
+    }
+}

backend/src/main/java/com/nursinghome/dto/FeedbackUpdateRequest.java

@@ -0,0 +1,31 @@
+package com.nursinghome.dto;
+
+public class FeedbackUpdateRequest {
+    private Long id;
+    private String status;
+    private String reply;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getReply() {
+        return reply;
+    }
+
+    public void setReply(String reply) {
+        this.reply = reply;
+    }
+}

backend/src/main/java/com/nursinghome/dto/HandoverRequest.java

@@ -0,0 +1,24 @@
+package com.nursinghome.dto;
+
+import java.time.LocalDate;
+
+public class HandoverRequest {
+    private LocalDate date;
+    private String content;
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public void setDate(LocalDate date) {
+        this.date = date;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+}

backend/src/main/java/com/nursinghome/dto/HealthRecordRequest.java

@@ -0,0 +1,70 @@
+package com.nursinghome.dto;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+public class HealthRecordRequest {
+    private Long elderId;
+    private BigDecimal temperature;
+    private Integer bpSystolic;
+    private Integer bpDiastolic;
+    private Integer heartRate;
+    private String note;
+    private LocalDateTime recordTime;
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public BigDecimal getTemperature() {
+        return temperature;
+    }
+
+    public void setTemperature(BigDecimal temperature) {
+        this.temperature = temperature;
+    }
+
+    public Integer getBpSystolic() {
+        return bpSystolic;
+    }
+
+    public void setBpSystolic(Integer bpSystolic) {
+        this.bpSystolic = bpSystolic;
+    }
+
+    public Integer getBpDiastolic() {
+        return bpDiastolic;
+    }
+
+    public void setBpDiastolic(Integer bpDiastolic) {
+        this.bpDiastolic = bpDiastolic;
+    }
+
+    public Integer getHeartRate() {
+        return heartRate;
+    }
+
+    public void setHeartRate(Integer heartRate) {
+        this.heartRate = heartRate;
+    }
+
+    public String getNote() {
+        return note;
+    }
+
+    public void setNote(String note) {
+        this.note = note;
+    }
+
+    public LocalDateTime getRecordTime() {
+        return recordTime;
+    }
+
+    public void setRecordTime(LocalDateTime recordTime) {
+        this.recordTime = recordTime;
+    }
+}

backend/src/main/java/com/nursinghome/dto/LoginRequest.java

@@ -0,0 +1,26 @@
+package com.nursinghome.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public class LoginRequest {
+    @NotBlank(message = "username required")
+    private String username;
+    @NotBlank(message = "password required")
+    private String password;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+}

backend/src/main/java/com/nursinghome/dto/NoticeRequest.java

@@ -0,0 +1,40 @@
+package com.nursinghome.dto;
+
+public class NoticeRequest {
+    private String title;
+    private String content;
+    private String targetRole;
+    private Long targetUserId;
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public String getTargetRole() {
+        return targetRole;
+    }
+
+    public void setTargetRole(String targetRole) {
+        this.targetRole = targetRole;
+    }
+
+    public Long getTargetUserId() {
+        return targetUserId;
+    }
+
+    public void setTargetUserId(Long targetUserId) {
+        this.targetUserId = targetUserId;
+    }
+}

backend/src/main/java/com/nursinghome/dto/PayRequest.java

@@ -0,0 +1,13 @@
+package com.nursinghome.dto;
+
+public class PayRequest {
+    private String method;
+
+    public String getMethod() {
+        return method;
+    }
+
+    public void setMethod(String method) {
+        this.method = method;
+    }
+}

backend/src/main/java/com/nursinghome/dto/RegisterRequest.java

@@ -0,0 +1,64 @@
+package com.nursinghome.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public class RegisterRequest {
+    @NotBlank(message = "username required")
+    private String username;
+    @NotBlank(message = "password required")
+    private String password;
+    @NotBlank(message = "name required")
+    private String name;
+    private String phone;
+    @NotBlank(message = "elderIdCard required")
+    private String elderIdCard;
+    private String relationship;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public String getElderIdCard() {
+        return elderIdCard;
+    }
+
+    public void setElderIdCard(String elderIdCard) {
+        this.elderIdCard = elderIdCard;
+    }
+
+    public String getRelationship() {
+        return relationship;
+    }
+
+    public void setRelationship(String relationship) {
+        this.relationship = relationship;
+    }
+}

backend/src/main/java/com/nursinghome/dto/ScheduleRequest.java

@@ -0,0 +1,51 @@
+package com.nursinghome.dto;
+
+import java.time.LocalDate;
+
+public class ScheduleRequest {
+    private Long id;
+    private Long nurseId;
+    private LocalDate date;
+    private String shift;
+    private String task;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getNurseId() {
+        return nurseId;
+    }
+
+    public void setNurseId(Long nurseId) {
+        this.nurseId = nurseId;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public void setDate(LocalDate date) {
+        this.date = date;
+    }
+
+    public String getShift() {
+        return shift;
+    }
+
+    public void setShift(String shift) {
+        this.shift = shift;
+    }
+
+    public String getTask() {
+        return task;
+    }
+
+    public void setTask(String task) {
+        this.task = task;
+    }
+}

backend/src/main/java/com/nursinghome/dto/UserRequest.java

@@ -0,0 +1,58 @@
+package com.nursinghome.dto;
+
+public class UserRequest {
+    private String username;
+    private String password;
+    private String name;
+    private String phone;
+    private String role;
+    private Integer status;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+
+    public Integer getStatus() {
+        return status;
+    }
+
+    public void setStatus(Integer status) {
+        this.status = status;
+    }
+}

backend/src/main/java/com/nursinghome/dto/UserUpdateRequest.java

@@ -0,0 +1,40 @@
+package com.nursinghome.dto;
+
+public class UserUpdateRequest {
+    private Long id;
+    private String name;
+    private String phone;
+    private Integer status;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public Integer getStatus() {
+        return status;
+    }
+
+    public void setStatus(Integer status) {
+        this.status = status;
+    }
+}

backend/src/main/java/com/nursinghome/entity/Bill.java

@@ -0,0 +1,106 @@
+package com.nursinghome.entity;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+public class Bill {
+    private Long id;
+    private Long elderId;
+    private String month;
+    private BigDecimal bedFee;
+    private BigDecimal careFee;
+    private BigDecimal mealFee;
+    private BigDecimal otherFee;
+    private BigDecimal total;
+    private String status;
+    private LocalDateTime createdAt;
+    private LocalDateTime paidAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public String getMonth() {
+        return month;
+    }
+
+    public void setMonth(String month) {
+        this.month = month;
+    }
+
+    public BigDecimal getBedFee() {
+        return bedFee;
+    }
+
+    public void setBedFee(BigDecimal bedFee) {
+        this.bedFee = bedFee;
+    }
+
+    public BigDecimal getCareFee() {
+        return careFee;
+    }
+
+    public void setCareFee(BigDecimal careFee) {
+        this.careFee = careFee;
+    }
+
+    public BigDecimal getMealFee() {
+        return mealFee;
+    }
+
+    public void setMealFee(BigDecimal mealFee) {
+        this.mealFee = mealFee;
+    }
+
+    public BigDecimal getOtherFee() {
+        return otherFee;
+    }
+
+    public void setOtherFee(BigDecimal otherFee) {
+        this.otherFee = otherFee;
+    }
+
+    public BigDecimal getTotal() {
+        return total;
+    }
+
+    public void setTotal(BigDecimal total) {
+        this.total = total;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getPaidAt() {
+        return paidAt;
+    }
+
+    public void setPaidAt(LocalDateTime paidAt) {
+        this.paidAt = paidAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/CareRecord.java

@@ -0,0 +1,69 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDateTime;
+
+public class CareRecord {
+    private Long id;
+    private Long elderId;
+    private Long nurseId;
+    private String content;
+    private String attachmentUrl;
+    private LocalDateTime recordTime;
+    private LocalDateTime createdAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public Long getNurseId() {
+        return nurseId;
+    }
+
+    public void setNurseId(Long nurseId) {
+        this.nurseId = nurseId;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public String getAttachmentUrl() {
+        return attachmentUrl;
+    }
+
+    public void setAttachmentUrl(String attachmentUrl) {
+        this.attachmentUrl = attachmentUrl;
+    }
+
+    public LocalDateTime getRecordTime() {
+        return recordTime;
+    }
+
+    public void setRecordTime(LocalDateTime recordTime) {
+        this.recordTime = recordTime;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/Elder.java

@@ -0,0 +1,96 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDate;
+
+public class Elder {
+    private Long id;
+    private String name;
+    private String gender;
+    private String idCard;
+    private LocalDate birthday;
+    private String roomNo;
+    private LocalDate checkInDate;
+    private String careLevel;
+    private String status;
+    private String remark;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getGender() {
+        return gender;
+    }
+
+    public void setGender(String gender) {
+        this.gender = gender;
+    }
+
+    public String getIdCard() {
+        return idCard;
+    }
+
+    public void setIdCard(String idCard) {
+        this.idCard = idCard;
+    }
+
+    public LocalDate getBirthday() {
+        return birthday;
+    }
+
+    public void setBirthday(LocalDate birthday) {
+        this.birthday = birthday;
+    }
+
+    public String getRoomNo() {
+        return roomNo;
+    }
+
+    public void setRoomNo(String roomNo) {
+        this.roomNo = roomNo;
+    }
+
+    public LocalDate getCheckInDate() {
+        return checkInDate;
+    }
+
+    public void setCheckInDate(LocalDate checkInDate) {
+        this.checkInDate = checkInDate;
+    }
+
+    public String getCareLevel() {
+        return careLevel;
+    }
+
+    public void setCareLevel(String careLevel) {
+        this.careLevel = careLevel;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getRemark() {
+        return remark;
+    }
+
+    public void setRemark(String remark) {
+        this.remark = remark;
+    }
+}

backend/src/main/java/com/nursinghome/entity/FamilyElder.java

@@ -0,0 +1,51 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDateTime;
+
+public class FamilyElder {
+    private Long id;
+    private Long familyId;
+    private Long elderId;
+    private String relationship;
+    private LocalDateTime createdAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getFamilyId() {
+        return familyId;
+    }
+
+    public void setFamilyId(Long familyId) {
+        this.familyId = familyId;
+    }
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public String getRelationship() {
+        return relationship;
+    }
+
+    public void setRelationship(String relationship) {
+        this.relationship = relationship;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/Feedback.java

@@ -0,0 +1,96 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDateTime;
+
+public class Feedback {
+    private Long id;
+    private Long familyId;
+    private Long elderId;
+    private String type;
+    private String content;
+    private Integer rating;
+    private String status;
+    private String reply;
+    private LocalDateTime createdAt;
+    private LocalDateTime updatedAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getFamilyId() {
+        return familyId;
+    }
+
+    public void setFamilyId(Long familyId) {
+        this.familyId = familyId;
+    }
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public Integer getRating() {
+        return rating;
+    }
+
+    public void setRating(Integer rating) {
+        this.rating = rating;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getReply() {
+        return reply;
+    }
+
+    public void setReply(String reply) {
+        this.reply = reply;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/Handover.java

@@ -0,0 +1,52 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+public class Handover {
+    private Long id;
+    private Long nurseId;
+    private LocalDate date;
+    private String content;
+    private LocalDateTime createdAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getNurseId() {
+        return nurseId;
+    }
+
+    public void setNurseId(Long nurseId) {
+        this.nurseId = nurseId;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public void setDate(LocalDate date) {
+        this.date = date;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/HealthRecord.java

@@ -0,0 +1,97 @@
+package com.nursinghome.entity;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+public class HealthRecord {
+    private Long id;
+    private Long elderId;
+    private Long nurseId;
+    private BigDecimal temperature;
+    private Integer bpSystolic;
+    private Integer bpDiastolic;
+    private Integer heartRate;
+    private String note;
+    private LocalDateTime recordTime;
+    private LocalDateTime createdAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getElderId() {
+        return elderId;
+    }
+
+    public void setElderId(Long elderId) {
+        this.elderId = elderId;
+    }
+
+    public Long getNurseId() {
+        return nurseId;
+    }
+
+    public void setNurseId(Long nurseId) {
+        this.nurseId = nurseId;
+    }
+
+    public BigDecimal getTemperature() {
+        return temperature;
+    }
+
+    public void setTemperature(BigDecimal temperature) {
+        this.temperature = temperature;
+    }
+
+    public Integer getBpSystolic() {
+        return bpSystolic;
+    }
+
+    public void setBpSystolic(Integer bpSystolic) {
+        this.bpSystolic = bpSystolic;
+    }
+
+    public Integer getBpDiastolic() {
+        return bpDiastolic;
+    }
+
+    public void setBpDiastolic(Integer bpDiastolic) {
+        this.bpDiastolic = bpDiastolic;
+    }
+
+    public Integer getHeartRate() {
+        return heartRate;
+    }
+
+    public void setHeartRate(Integer heartRate) {
+        this.heartRate = heartRate;
+    }
+
+    public String getNote() {
+        return note;
+    }
+
+    public void setNote(String note) {
+        this.note = note;
+    }
+
+    public LocalDateTime getRecordTime() {
+        return recordTime;
+    }
+
+    public void setRecordTime(LocalDateTime recordTime) {
+        this.recordTime = recordTime;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/Notice.java

@@ -0,0 +1,69 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDateTime;
+
+public class Notice {
+    private Long id;
+    private String title;
+    private String content;
+    private String targetRole;
+    private Long targetUserId;
+    private Long createdBy;
+    private LocalDateTime createdAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public String getTargetRole() {
+        return targetRole;
+    }
+
+    public void setTargetRole(String targetRole) {
+        this.targetRole = targetRole;
+    }
+
+    public Long getTargetUserId() {
+        return targetUserId;
+    }
+
+    public void setTargetUserId(Long targetUserId) {
+        this.targetUserId = targetUserId;
+    }
+
+    public Long getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(Long createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/PaymentRecord.java

@@ -0,0 +1,61 @@
+package com.nursinghome.entity;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+
+public class PaymentRecord {
+    private Long id;
+    private Long billId;
+    private Long familyId;
+    private BigDecimal amount;
+    private String method;
+    private LocalDateTime paidAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getBillId() {
+        return billId;
+    }
+
+    public void setBillId(Long billId) {
+        this.billId = billId;
+    }
+
+    public Long getFamilyId() {
+        return familyId;
+    }
+
+    public void setFamilyId(Long familyId) {
+        this.familyId = familyId;
+    }
+
+    public BigDecimal getAmount() {
+        return amount;
+    }
+
+    public void setAmount(BigDecimal amount) {
+        this.amount = amount;
+    }
+
+    public String getMethod() {
+        return method;
+    }
+
+    public void setMethod(String method) {
+        this.method = method;
+    }
+
+    public LocalDateTime getPaidAt() {
+        return paidAt;
+    }
+
+    public void setPaidAt(LocalDateTime paidAt) {
+        this.paidAt = paidAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/Schedule.java

@@ -0,0 +1,70 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+public class Schedule {
+    private Long id;
+    private Long nurseId;
+    private LocalDate date;
+    private String shift;
+    private String task;
+    private LocalDateTime createdAt;
+    private LocalDateTime updatedAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getNurseId() {
+        return nurseId;
+    }
+
+    public void setNurseId(Long nurseId) {
+        this.nurseId = nurseId;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public void setDate(LocalDate date) {
+        this.date = date;
+    }
+
+    public String getShift() {
+        return shift;
+    }
+
+    public void setShift(String shift) {
+        this.shift = shift;
+    }
+
+    public String getTask() {
+        return task;
+    }
+
+    public void setTask(String task) {
+        this.task = task;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+}

backend/src/main/java/com/nursinghome/entity/User.java

@@ -0,0 +1,87 @@
+package com.nursinghome.entity;
+
+import java.time.LocalDateTime;
+
+public class User {
+    private Long id;
+    private String username;
+    private String password;
+    private String name;
+    private String phone;
+    private String role;
+    private Integer status;
+    private LocalDateTime createdAt;
+    private LocalDateTime updatedAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+
+    public Integer getStatus() {
+        return status;
+    }
+
+    public void setStatus(Integer status) {
+        this.status = status;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+}

backend/src/main/java/com/nursinghome/mapper/BillMapper.java

@@ -0,0 +1,28 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.Bill;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface BillMapper {
+    @Insert("INSERT INTO bill(elder_id, month, bed_fee, care_fee, meal_fee, other_fee, total, status, created_at) VALUES(#{elderId}, #{month}, #{bedFee}, #{careFee}, #{mealFee}, #{otherFee}, #{total}, #{status}, NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(Bill bill);
+
+    @Select("SELECT * FROM bill ORDER BY month DESC")
+    List<Bill> listAll();
+
+    @Select("SELECT * FROM bill WHERE id = #{id}")
+    Bill findById(Long id);
+
+    @Select("SELECT * FROM bill WHERE elder_id = #{elderId} ORDER BY month DESC")
+    List<Bill> listByElderId(Long elderId);
+
+    @Select("<script>SELECT * FROM bill WHERE elder_id IN <foreach collection='elderIds' item='id' open='(' separator=',' close=')'>#{id}</foreach> ORDER BY month DESC</script>")
+    List<Bill> listByElderIds(@Param("elderIds") List<Long> elderIds);
+
+    @Update("UPDATE bill SET status=#{status}, paid_at=#{paidAt} WHERE id=#{id}")
+    int updateStatus(Bill bill);
+}

backend/src/main/java/com/nursinghome/mapper/CareRecordMapper.java

@@ -0,0 +1,19 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.CareRecord;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface CareRecordMapper {
+    @Insert("INSERT INTO care_record(elder_id, nurse_id, content, attachment_url, record_time, created_at) VALUES(#{elderId}, #{nurseId}, #{content}, #{attachmentUrl}, #{recordTime}, NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(CareRecord record);
+
+    @Select("SELECT * FROM care_record WHERE elder_id = #{elderId} ORDER BY record_time DESC")
+    List<CareRecord> listByElderId(Long elderId);
+
+    @Select("<script>SELECT * FROM care_record WHERE elder_id IN <foreach collection='elderIds' item='id' open='(' separator=',' close=')'>#{id}</foreach> ORDER BY record_time DESC</script>")
+    List<CareRecord> listByElderIds(@Param("elderIds") List<Long> elderIds);
+}

backend/src/main/java/com/nursinghome/mapper/ElderMapper.java

@@ -0,0 +1,28 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.Elder;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface ElderMapper {
+    @Select("SELECT * FROM elder ORDER BY id DESC")
+    List<Elder> listAll();
+
+    @Select("SELECT * FROM elder WHERE id = #{id}")
+    Elder findById(Long id);
+
+    @Select("SELECT * FROM elder WHERE id_card = #{idCard} LIMIT 1")
+    Elder findByIdCard(String idCard);
+
+    @Insert("INSERT INTO elder(name, gender, id_card, birthday, room_no, check_in_date, care_level, status, remark) VALUES(#{name}, #{gender}, #{idCard}, #{birthday}, #{roomNo}, #{checkInDate}, #{careLevel}, #{status}, #{remark})")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(Elder elder);
+
+    @Update("UPDATE elder SET name=#{name}, gender=#{gender}, id_card=#{idCard}, birthday=#{birthday}, room_no=#{roomNo}, check_in_date=#{checkInDate}, care_level=#{careLevel}, status=#{status}, remark=#{remark} WHERE id=#{id}")
+    int update(Elder elder);
+
+    @Delete("DELETE FROM elder WHERE id=#{id}")
+    int delete(Long id);
+}

backend/src/main/java/com/nursinghome/mapper/FamilyElderMapper.java

@@ -0,0 +1,19 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.FamilyElder;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface FamilyElderMapper {
+    @Insert("INSERT INTO family_elder(family_id, elder_id, relationship, created_at) VALUES(#{familyId}, #{elderId}, #{relationship}, NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(FamilyElder relation);
+
+    @Select("SELECT * FROM family_elder WHERE family_id = #{familyId}")
+    List<FamilyElder> listByFamilyId(Long familyId);
+
+    @Select("SELECT * FROM family_elder WHERE family_id = #{familyId} AND elder_id = #{elderId} LIMIT 1")
+    FamilyElder findByFamilyAndElder(@Param("familyId") Long familyId, @Param("elderId") Long elderId);
+}

backend/src/main/java/com/nursinghome/mapper/FeedbackMapper.java

@@ -0,0 +1,19 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.Feedback;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface FeedbackMapper {
+    @Insert("INSERT INTO feedback(family_id, elder_id, type, content, rating, status, created_at, updated_at) VALUES(#{familyId}, #{elderId}, #{type}, #{content}, #{rating}, #{status}, NOW(), NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(Feedback feedback);
+
+    @Select("SELECT * FROM feedback ORDER BY created_at DESC")
+    List<Feedback> listAll();
+
+    @Update("UPDATE feedback SET status=#{status}, reply=#{reply}, updated_at=NOW() WHERE id=#{id}")
+    int updateStatus(Feedback feedback);
+}

backend/src/main/java/com/nursinghome/mapper/HandoverMapper.java

@@ -0,0 +1,16 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.Handover;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface HandoverMapper {
+    @Insert("INSERT INTO handover(nurse_id, date, content, created_at) VALUES(#{nurseId}, #{date}, #{content}, NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(Handover handover);
+
+    @Select("SELECT * FROM handover WHERE nurse_id = #{nurseId} ORDER BY date DESC")
+    List<Handover> listByNurseId(Long nurseId);
+}

backend/src/main/java/com/nursinghome/mapper/HealthRecordMapper.java

@@ -0,0 +1,19 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.HealthRecord;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface HealthRecordMapper {
+    @Insert("INSERT INTO health_record(elder_id, nurse_id, temperature, bp_systolic, bp_diastolic, heart_rate, note, record_time, created_at) VALUES(#{elderId}, #{nurseId}, #{temperature}, #{bpSystolic}, #{bpDiastolic}, #{heartRate}, #{note}, #{recordTime}, NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(HealthRecord record);
+
+    @Select("SELECT * FROM health_record WHERE elder_id = #{elderId} ORDER BY record_time DESC")
+    List<HealthRecord> listByElderId(Long elderId);
+
+    @Select("<script>SELECT * FROM health_record WHERE elder_id IN <foreach collection='elderIds' item='id' open='(' separator=',' close=')'>#{id}</foreach> ORDER BY record_time DESC</script>")
+    List<HealthRecord> listByElderIds(@Param("elderIds") List<Long> elderIds);
+}

backend/src/main/java/com/nursinghome/mapper/NoticeMapper.java

@@ -0,0 +1,16 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.Notice;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface NoticeMapper {
+    @Insert("INSERT INTO notice(title, content, target_role, target_user_id, created_by, created_at) VALUES(#{title}, #{content}, #{targetRole}, #{targetUserId}, #{createdBy}, NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(Notice notice);
+
+    @Select("<script>SELECT * FROM notice WHERE 1=1 <if test='targetUserId != null'> AND target_user_id = #{targetUserId}</if> <if test='targetRole != null'> AND (target_role = #{targetRole} OR target_role = 'ALL')</if> ORDER BY created_at DESC</script>")
+    List<Notice> listByTarget(@Param("targetRole") String targetRole, @Param("targetUserId") Long targetUserId);
+}

backend/src/main/java/com/nursinghome/mapper/PaymentRecordMapper.java

@@ -0,0 +1,16 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.PaymentRecord;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface PaymentRecordMapper {
+    @Insert("INSERT INTO payment_record(bill_id, family_id, amount, method, paid_at) VALUES(#{billId}, #{familyId}, #{amount}, #{method}, #{paidAt})")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(PaymentRecord record);
+
+    @Select("SELECT * FROM payment_record WHERE bill_id = #{billId} ORDER BY paid_at DESC")
+    List<PaymentRecord> listByBillId(Long billId);
+}

backend/src/main/java/com/nursinghome/mapper/ScheduleMapper.java

@@ -0,0 +1,26 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.Schedule;
+import org.apache.ibatis.annotations.*;
+
+import java.time.LocalDate;
+import java.util.List;
+
+@Mapper
+public interface ScheduleMapper {
+    @Select("SELECT * FROM schedule WHERE nurse_id = #{nurseId} AND date = #{date} ORDER BY id DESC")
+    List<Schedule> listByNurseAndDate(@Param("nurseId") Long nurseId, @Param("date") LocalDate date);
+
+    @Select("SELECT * FROM schedule WHERE date = #{date} ORDER BY id DESC")
+    List<Schedule> listByDate(LocalDate date);
+
+    @Insert("INSERT INTO schedule(nurse_id, date, shift, task, created_at, updated_at) VALUES(#{nurseId}, #{date}, #{shift}, #{task}, NOW(), NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(Schedule schedule);
+
+    @Update("UPDATE schedule SET nurse_id=#{nurseId}, date=#{date}, shift=#{shift}, task=#{task}, updated_at=NOW() WHERE id=#{id}")
+    int update(Schedule schedule);
+
+    @Delete("DELETE FROM schedule WHERE id=#{id}")
+    int delete(Long id);
+}

backend/src/main/java/com/nursinghome/mapper/UserMapper.java

@@ -0,0 +1,31 @@
+package com.nursinghome.mapper;
+
+import com.nursinghome.entity.User;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface UserMapper {
+    @Select("SELECT * FROM sys_user WHERE username = #{username} LIMIT 1")
+    User findByUsername(String username);
+
+    @Select("SELECT * FROM sys_user WHERE id = #{id}")
+    User findById(Long id);
+
+    @Select("<script>SELECT * FROM sys_user <where><if test='role != null'>role = #{role}</if></where> ORDER BY id DESC</script>")
+    List<User> listByRole(@Param("role") String role);
+
+    @Insert("INSERT INTO sys_user(username, password, name, phone, role, status, created_at, updated_at) VALUES(#{username}, #{password}, #{name}, #{phone}, #{role}, #{status}, NOW(), NOW())")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    int insert(User user);
+
+    @Update("UPDATE sys_user SET name=#{name}, phone=#{phone}, status=#{status}, updated_at=NOW() WHERE id=#{id}")
+    int update(User user);
+
+    @Update("UPDATE sys_user SET password=#{password}, updated_at=NOW() WHERE id=#{id}")
+    int updatePassword(@Param("id") Long id, @Param("password") String password);
+
+    @Update("UPDATE sys_user SET status=#{status}, updated_at=NOW() WHERE id=#{id}")
+    int updateStatus(@Param("id") Long id, @Param("status") Integer status);
+}

backend/src/main/java/com/nursinghome/service/BillService.java

@@ -0,0 +1,62 @@
+package com.nursinghome.service;
+
+import com.nursinghome.entity.Bill;
+import com.nursinghome.entity.PaymentRecord;
+import com.nursinghome.mapper.BillMapper;
+import com.nursinghome.mapper.PaymentRecordMapper;
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Service
+public class BillService {
+    private final BillMapper billMapper;
+    private final PaymentRecordMapper paymentRecordMapper;
+
+    public BillService(BillMapper billMapper, PaymentRecordMapper paymentRecordMapper) {
+        this.billMapper = billMapper;
+        this.paymentRecordMapper = paymentRecordMapper;
+    }
+
+    public Bill createBill(Bill bill) {
+        if (bill.getTotal() == null) {
+            BigDecimal total = BigDecimal.ZERO;
+            if (bill.getBedFee() != null) total = total.add(bill.getBedFee());
+            if (bill.getCareFee() != null) total = total.add(bill.getCareFee());
+            if (bill.getMealFee() != null) total = total.add(bill.getMealFee());
+            if (bill.getOtherFee() != null) total = total.add(bill.getOtherFee());
+            bill.setTotal(total);
+        }
+        if (bill.getStatus() == null) {
+            bill.setStatus("UNPAID");
+        }
+        billMapper.insert(bill);
+        return bill;
+    }
+
+    public List<Bill> listByElderId(Long elderId) {
+        return billMapper.listByElderId(elderId);
+    }
+
+    public List<Bill> listByElderIds(List<Long> elderIds) {
+        return billMapper.listByElderIds(elderIds);
+    }
+
+    public void payBill(Long billId, Long familyId, String method, BigDecimal amount) {
+        Bill bill = new Bill();
+        bill.setId(billId);
+        bill.setStatus("PAID");
+        bill.setPaidAt(LocalDateTime.now());
+        billMapper.updateStatus(bill);
+
+        PaymentRecord record = new PaymentRecord();
+        record.setBillId(billId);
+        record.setFamilyId(familyId);
+        record.setAmount(amount);
+        record.setMethod(method);
+        record.setPaidAt(LocalDateTime.now());
+        paymentRecordMapper.insert(record);
+    }
+}

backend/src/main/java/com/nursinghome/service/ElderService.java

@@ -0,0 +1,45 @@
+package com.nursinghome.service;
+
+import com.nursinghome.common.ApiException;
+import com.nursinghome.entity.Elder;
+import com.nursinghome.mapper.ElderMapper;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ElderService {
+    private final ElderMapper elderMapper;
+
+    public ElderService(ElderMapper elderMapper) {
+        this.elderMapper = elderMapper;
+    }
+
+    public List<Elder> listAll() {
+        return elderMapper.listAll();
+    }
+
+    public Elder findById(Long id) {
+        return elderMapper.findById(id);
+    }
+
+    public Elder findByIdCard(String idCard) {
+        return elderMapper.findByIdCard(idCard);
+    }
+
+    public Elder create(Elder elder) {
+        if (elderMapper.findByIdCard(elder.getIdCard()) != null) {
+            throw new ApiException("id card already exists");
+        }
+        elderMapper.insert(elder);
+        return elder;
+    }
+
+    public void update(Elder elder) {
+        elderMapper.update(elder);
+    }
+
+    public void delete(Long id) {
+        elderMapper.delete(id);
+    }
+}

backend/src/main/java/com/nursinghome/service/FamilyService.java

@@ -0,0 +1,50 @@
+package com.nursinghome.service;
+
+import com.nursinghome.common.ApiException;
+import com.nursinghome.entity.Elder;
+import com.nursinghome.entity.FamilyElder;
+import com.nursinghome.entity.User;
+import com.nursinghome.mapper.FamilyElderMapper;
+import com.nursinghome.util.PasswordUtil;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class FamilyService {
+    private final UserService userService;
+    private final ElderService elderService;
+    private final FamilyElderMapper familyElderMapper;
+
+    public FamilyService(UserService userService, ElderService elderService, FamilyElderMapper familyElderMapper) {
+        this.userService = userService;
+        this.elderService = elderService;
+        this.familyElderMapper = familyElderMapper;
+    }
+
+    public User registerFamily(String username, String password, String name, String phone, String elderIdCard, String relationship) {
+        Elder elder = elderService.findByIdCard(elderIdCard);
+        if (elder == null) {
+            throw new ApiException("elder not found");
+        }
+        User user = new User();
+        user.setUsername(username);
+        user.setPassword(password);
+        user.setName(name);
+        user.setPhone(phone);
+        user.setRole("FAMILY");
+        user.setStatus(1);
+        userService.createUser(user, true);
+
+        FamilyElder relation = new FamilyElder();
+        relation.setFamilyId(user.getId());
+        relation.setElderId(elder.getId());
+        relation.setRelationship(relationship);
+        familyElderMapper.insert(relation);
+        return user;
+    }
+
+    public List<FamilyElder> listRelations(Long familyId) {
+        return familyElderMapper.listByFamilyId(familyId);
+    }
+}

backend/src/main/java/com/nursinghome/service/UserService.java

@@ -0,0 +1,56 @@
+package com.nursinghome.service;
+
+import com.nursinghome.common.ApiException;
+import com.nursinghome.entity.User;
+import com.nursinghome.mapper.UserMapper;
+import com.nursinghome.util.PasswordUtil;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class UserService {
+    private final UserMapper userMapper;
+
+    public UserService(UserMapper userMapper) {
+        this.userMapper = userMapper;
+    }
+
+    public User findByUsername(String username) {
+        return userMapper.findByUsername(username);
+    }
+
+    public User findById(Long id) {
+        return userMapper.findById(id);
+    }
+
+    public List<User> listByRole(String role) {
+        return userMapper.listByRole(role);
+    }
+
+    public User createUser(User user, boolean hashPassword) {
+        if (userMapper.findByUsername(user.getUsername()) != null) {
+            throw new ApiException("username already exists");
+        }
+        if (hashPassword) {
+            user.setPassword(PasswordUtil.hash(user.getPassword()));
+        }
+        if (user.getStatus() == null) {
+            user.setStatus(1);
+        }
+        userMapper.insert(user);
+        return user;
+    }
+
+    public void updateUser(User user) {
+        userMapper.update(user);
+    }
+
+    public void updateStatus(Long id, Integer status) {
+        userMapper.updateStatus(id, status);
+    }
+
+    public void updatePassword(Long id, String password) {
+        userMapper.updatePassword(id, password);
+    }
+}

backend/src/main/java/com/nursinghome/util/PasswordUtil.java

@@ -0,0 +1,25 @@
+package com.nursinghome.util;
+
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+public class PasswordUtil {
+    private static final BCryptPasswordEncoder ENCODER = new BCryptPasswordEncoder();
+
+    public static String hash(String raw) {
+        return ENCODER.encode(raw);
+    }
+
+    public static boolean matches(String raw, String stored) {
+        if (stored == null) {
+            return false;
+        }
+        if (isBcrypt(stored)) {
+            return ENCODER.matches(raw, stored);
+        }
+        return stored.equals(raw);
+    }
+
+    public static boolean isBcrypt(String stored) {
+        return stored != null && stored.startsWith("$2");
+    }
+}

backend/src/main/resources/application.yml

@@ -0,0 +1,28 @@
+server:
+  port: 8080
+
+spring:
+  datasource:
+    url: jdbc:mysql://localhost:3306/nursing_home?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
+    username: root
+    password: root
+    driver-class-name: com.mysql.cj.jdbc.Driver
+  servlet:
+    multipart:
+      max-file-size: 10MB
+      max-request-size: 20MB
+
+mybatis:
+  configuration:
+    map-underscore-to-camel-case: true
+
+sa-token:
+  token-name: satoken
+  timeout: 86400
+  activity-timeout: -1
+  is-concurrent: true
+  is-share: true
+  token-style: uuid
+
+app:
+  upload-dir: uploads