🚀 删除菜单

common/service-util/src/main/java/com/atguigu/constant/MessageConstant.java

@@ -32,7 +32,5 @@ public class MessageConstant {
     public static final String LOGIN_DTO_IS_EMPTY = "登录参数不能为空";
     public static final String TOKEN_IS_EMPTY = "token为空";
     public static final String DATA_IS_EMPTY = "数据为空";
-    public static final String STOCK_LESS = "库存不足";
+    public static final String DELETE_MENU_ERROR_HAS_MENUS = "有下级菜单";
-    public static final String SKU_NUM_CANNOT_BE_LESS = "商品数量不能再少了";
-    public static final String CART_IS_EMPTY = "购物车为空";
 }

service-oa/src/main/java/com/atguigu/auth/controller/SysMenuController.java

@@ -50,7 +50,7 @@ public class SysMenuController {
     @ApiOperation(value = "删除菜单")
     @DeleteMapping("remove/{id}")
     public Result<SysMenu> remove(@PathVariable Long id) {
-        sysMenuService.removeById(id);
+        sysMenuService.removeMenuById(id);
         return Result.success();
     }
 }

service-oa/src/main/java/com/atguigu/auth/service/SysMenuService.java

@@ -21,4 +21,11 @@ public interface SysMenuService extends IService<SysMenu> {
      * @return 菜单列表
      */
     List<SysMenu> findNodes();
+
+    /**
+     * 删除菜单
+     *
+     * @param id 菜单id
+     */
+    void removeMenuById(Long id);
 }

service-oa/src/main/java/com/atguigu/auth/service/impl/SysMenuServiceImpl.java

@@ -3,7 +3,10 @@ package com.atguigu.auth.service.impl;
 import com.atguigu.auth.mapper.SysMenuMapper;
 import com.atguigu.auth.service.SysMenuService;
 import com.atguigu.common.utlis.MenuHelper;
+import com.atguigu.constant.MessageConstant;
+import com.atguigu.exception.BunnyException;
 import com.atguigu.model.system.SysMenu;
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.stereotype.Service;
 
@@ -29,4 +32,25 @@ public class SysMenuServiceImpl extends ServiceImpl<SysMenuMapper, SysMenu> impl
     public List<SysMenu> findNodes() {
         return MenuHelper.buildTree(list());
     }
+
+    /**
+     * 删除菜单
+     *
+     * @param id 菜单id
+     */
+    @Override
+    public void removeMenuById(Long id) {
+        // 判断当前菜单是否有下级菜单
+        LambdaQueryWrapper<SysMenu> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(SysMenu::getParentId, id);
+
+        // 查询菜单列表
+        List<SysMenu> sysMenuList = list(wrapper);
+
+        // 为空时可以删除
+        if (sysMenuList == null) removeById(id);
+
+        // 如果不为空抛出异常
+        throw new BunnyException(MessageConstant.DELETE_MENU_ERROR_HAS_MENUS);
+    }
 }