后端功能增强：全局异常处理、API控制器、JSP视图和单元测试
- 添加 GlobalExceptionHandler 全局异常处理 - 添加 ApiController REST API 控制器 - 更新 WebConfig 跨域配置和 ProductRepository 查询方法 - 新增 monitor/product-detail/profile JSP 视图页面 - 添加 FlashSaleServiceTest 秒杀服务单元测试 - 更新 application.yml 配置
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package com.org.flashsalesystem.controller;
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import com.org.flashsalesystem.dto.FlashSaleDTO;
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import com.org.flashsalesystem.dto.ProductDTO;
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import com.org.flashsalesystem.entity.Product;
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import com.org.flashsalesystem.repository.ProductRepository;
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import com.org.flashsalesystem.service.FlashSaleService;
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import com.org.flashsalesystem.service.ProductService;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.data.domain.Page;
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import org.springframework.data.domain.PageRequest;
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import org.springframework.data.domain.Pageable;
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import org.springframework.data.domain.Sort;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.*;
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import javax.servlet.http.HttpServletRequest;
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import java.util.*;
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/**
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* API控制器 - 为Vue前端提供REST接口
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*/
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@RestController
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@RequestMapping("/api")
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@RequiredArgsConstructor
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@Slf4j
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@Tag(name = "API接口", description = "前端API接口")
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public class ApiController {
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private final ProductRepository productRepository;
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private final ProductService productService;
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private final FlashSaleService flashSaleService;
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/**
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* 获取热门商品
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*/
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@GetMapping("/products/hot")
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@Operation(summary = "获取热门商品")
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public ResponseEntity<Map<String, Object>> getHotProducts(
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@RequestParam(defaultValue = "8") int limit) {
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Map<String, Object> response = new HashMap<>();
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try {
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// 获取前N个商品作为热门商品
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Pageable pageable = PageRequest.of(0, limit, Sort.by(Sort.Direction.DESC, "id"));
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Page<Product> productPage = productRepository.findAll(pageable);
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List<Map<String, Object>> products = new ArrayList<>();
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for (Product product : productPage.getContent()) {
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Map<String, Object> item = new HashMap<>();
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item.put("id", product.getId());
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item.put("name", product.getName());
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item.put("description", product.getDescription());
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item.put("price", product.getPrice());
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item.put("stock", product.getStock());
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item.put("image", product.getImageUrl());
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item.put("category", "");
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products.add(item);
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}
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response.put("success", true);
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response.put("data", products);
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} catch (Exception e) {
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log.error("获取热门商品失败", e);
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response.put("success", false);
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response.put("message", "获取热门商品失败");
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}
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return ResponseEntity.ok(response);
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}
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/**
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* 获取活跃的秒杀活动
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*/
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@GetMapping("/flashsales/active")
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@Operation(summary = "获取活跃的秒杀活动")
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public ResponseEntity<Map<String, Object>> getActiveFlashSales() {
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Map<String, Object> response = new HashMap<>();
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try {
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List<FlashSaleDTO> flashSales = flashSaleService.getActiveFlashSales();
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// 转换数据格式
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List<Map<String, Object>> result = new ArrayList<>();
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for (FlashSaleDTO flashSale : flashSales) {
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Map<String, Object> item = new HashMap<>();
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item.put("id", flashSale.getId());
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item.put("productId", flashSale.getProductId());
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item.put("productName", flashSale.getProductName());
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item.put("productImage", "");
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item.put("originalPrice", flashSale.getOriginalPrice());
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item.put("flashPrice", flashSale.getFlashPrice());
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item.put("flashStock", flashSale.getFlashStock());
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item.put("startTime", flashSale.getStartTime());
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item.put("endTime", flashSale.getEndTime());
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item.put("status", flashSale.getStatus());
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result.add(item);
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}
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response.put("success", true);
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response.put("data", result);
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} catch (Exception e) {
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log.error("获取活跃秒杀活动失败", e);
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response.put("success", false);
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response.put("message", "获取活跃秒杀活动失败");
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}
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return ResponseEntity.ok(response);
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}
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/**
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* 参与秒杀
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*/
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@PostMapping("/flashsales/participate")
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@Operation(summary = "参与秒杀")
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public ResponseEntity<Map<String, Object>> participate(
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@RequestBody Map<String, Object> request,
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HttpServletRequest httpRequest) {
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Map<String, Object> response = new HashMap<>();
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try {
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// 从session获取用户ID
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Long userId = (Long) httpRequest.getSession().getAttribute("userId");
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if (userId == null) {
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response.put("success", false);
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response.put("message", "请先登录");
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return ResponseEntity.ok(response);
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}
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Long flashSaleId = Long.valueOf(request.get("flashSaleId").toString());
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Integer quantity = request.containsKey("quantity") ?
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Integer.valueOf(request.get("quantity").toString()) : 1;
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// 创建参与DTO
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FlashSaleDTO.ParticipateDTO participateDTO = new FlashSaleDTO.ParticipateDTO();
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participateDTO.setFlashSaleId(flashSaleId);
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participateDTO.setQuantity(quantity);
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// 调用秒杀服务
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FlashSaleDTO.ResultDTO result = flashSaleService.participateFlashSale(userId, participateDTO);
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response.put("success", result.getSuccess());
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response.put("message", result.getMessage());
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if (result.getOrderId() != null) {
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response.put("orderId", result.getOrderId());
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}
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} catch (Exception e) {
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log.error("参与秒杀失败", e);
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response.put("success", false);
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response.put("message", e.getMessage());
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}
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return ResponseEntity.ok(response);
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}
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/**
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* 获取商品列表
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*/
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@GetMapping("/products")
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@Operation(summary = "获取商品列表")
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public ResponseEntity<Map<String, Object>> getProducts(
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@RequestParam(defaultValue = "0") int page,
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@RequestParam(defaultValue = "12") int size) {
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Map<String, Object> response = new HashMap<>();
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try {
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Pageable pageable = PageRequest.of(page, size, Sort.by(Sort.Direction.DESC, "id"));
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Page<Product> productPage = productRepository.findAll(pageable);
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List<Map<String, Object>> products = new ArrayList<>();
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for (Product product : productPage.getContent()) {
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Map<String, Object> item = new HashMap<>();
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item.put("id", product.getId());
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item.put("name", product.getName());
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item.put("description", product.getDescription());
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item.put("price", product.getPrice());
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item.put("stock", product.getStock());
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item.put("image", product.getImageUrl());
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item.put("category", "");
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products.add(item);
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}
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response.put("success", true);
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response.put("list", products);
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response.put("total", productPage.getTotalElements());
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} catch (Exception e) {
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log.error("获取商品列表失败", e);
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response.put("success", false);
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response.put("message", "获取商品列表失败");
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}
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return ResponseEntity.ok(response);
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}
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/**
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* 获取秒杀活动列表
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*/
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@GetMapping("/flashsales")
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@Operation(summary = "获取秒杀活动列表")
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public ResponseEntity<Map<String, Object>> getFlashSales() {
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Map<String, Object> response = new HashMap<>();
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try {
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List<FlashSaleDTO> flashSales = flashSaleService.getActiveFlashSales();
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response.put("success", true);
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response.put("list", flashSales);
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response.put("total", flashSales.size());
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} catch (Exception e) {
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log.error("获取秒杀活动列表失败", e);
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response.put("success", false);
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response.put("message", "获取秒杀活动列表失败");
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}
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return ResponseEntity.ok(response);
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}
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}
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