add

frontend/src/views/ProductDetail.vue

@@ -1,4 +1,4 @@
-<template>
+<template>
   <div class="page">
     <el-card>
       <el-button type="text" @click="$router.push('/')">返回首页</el-button>
@@ -101,6 +101,9 @@ export default {
         addressId: this.addressId,
         items: [{ productId: this.product.id, quantity: this.quantity }]
       }).then((res) => {
+        if (!res || !res.data || res.data.code !== 0 || !res.data.data) {
+          return;
+        }
         this.$message.success('下单成功');
         const order = res.data.data.order;
         this.$router.push(`/orders?highlight=${order.id}`);