1）先写两个 DTO（新增、修改）
ShopSaveDTO.java（新增用）
import lombok.Data; import java.math.BigDecimal; @Data public class ShopSaveDTO { private String name; private String address; private Long typeId; private String phone; private BigDecimal avgPrice; }
ShopUpdateDTO.java（修改用）
import lombok.Data; import java.math.BigDecimal; @Data public class ShopUpdateDTO { private Long id; // 修改必须传id private String name; private String address; private Long typeId; private String phone; private BigDecimal avgPrice; }
2）Controller（完整，接收 DTO）
import org.springframework.web.bind.annotation.*; import javax.annotation.Resource; @RestController @RequestMapping("/shop") public class ShopController { @Resource private ShopService shopService; // 查询 @GetMapping("/{id}") public Result queryById(@PathVariable Long id) { return shopService.queryById(id); } // 新增（接收 ShopSaveDTO） @PostMapping public Result saveShop(@RequestBody ShopSaveDTO dto) { return shopService.saveShop(dto); } // 修改（接收 ShopUpdateDTO） @PutMapping public Result updateShop(@RequestBody ShopUpdateDTO dto) { return shopService.updateShop(dto); } // 删除 @DeleteMapping("/{id}") public Result deleteShop(@PathVariable Long id) { return shopService.deleteShop(id); } }
3）Service 接口
import com.baomidou.mybatisplus.extension.service.IService; public interface ShopService extends IService<Shop> { Result queryById(Long id); Result saveShop(ShopSaveDTO dto); Result updateShop(ShopUpdateDTO dto); Result deleteShop(Long id); }
4）ServiceImpl（完整 + BeanUtils.copyProperties）
import org.springframework.beans.BeanUtils; import org.springframework.transaction.annotation.Transactional; import org.springframework.data.redis.core.StringRedisTemplate; @Service public class ShopServiceImpl extends ServiceImpl<ShopMapper, Shop> implements ShopService { @Resource private StringRedisTemplate stringRedisTemplate; @Resource private CacheClient cacheClient; private static final String CACHE_SHOP_KEY = "cache:shop:"; // ====================== 查询（你原来的逻辑）====================== @Override public Result queryById(Long id) { Shop shop = cacheClient.queryWithPassThrough( CACHE_SHOP_KEY, id, Shop.class, this::getById, 30L, java.util.concurrent.TimeUnit.MINUTES ); if (shop == null) { return Result.fail("店铺不存在"); } return Result.ok(shop); } // ====================== 新增 ====================== @Override @Transactional public Result saveShop(ShopSaveDTO dto) { Shop shop = new Shop(); BeanUtils.copyProperties(dto, shop); // DTO → 实体 save(shop); return Result.ok(); } // ====================== 修改 ====================== @Override @Transactional public Result updateShop(ShopUpdateDTO dto) { Shop shop = new Shop(); BeanUtils.copyProperties(dto, shop); // DTO → 实体 updateById(shop); // 删除缓存 stringRedisTemplate.delete(CACHE_SHOP_KEY + dto.getId()); return Result.ok(); } // ====================== 删除 ====================== @Override @Transactional public Result deleteShop(Long id) { removeById(id); stringRedisTemplate.delete(CACHE_SHOP_KEY + id); return Result.ok(); } }
