feat:新增菜单逻辑

新增菜单的上移和下移操作

core/core-backend/src/main/java/io/gisbi/application/system/controller/MenuController.java

@@ -47,6 +47,19 @@ public class MenuController {
         }
     }
 
+    /**
+     * 上移/下移菜单
+     */
+    @PostMapping("/changeOrder")
+    public ResponseResult changeOrder(@RequestParam String menuId, @RequestParam String direction) {
+        boolean result = menuService.changeOrder(menuId, direction);
+        if (result) {
+            return ResponseResult.success();
+        } else {
+            return ResponseResult.error();
+        }
+    }
+
     /***********************************
      * 用途说明：修改菜单及按钮根据ID
      * 参数说明

core/core-backend/src/main/java/io/gisbi/application/system/service/IMenuService.java

@@ -49,4 +49,7 @@ public interface IMenuService extends IService<Menu> {
      * 返回值说明:  菜单结构树集合
      ***********************************/
     List<Map<String, Object>> permissionAssignment(String appId ,String roleId);
+
+    boolean changeOrder(String menuId, String direction);
+
 }

core/core-backend/src/main/java/io/gisbi/application/system/service/impl/MenuServiceImpl.java

@@ -214,6 +214,56 @@ public class MenuServiceImpl extends ServiceImpl<MenuMapper, Menu> implements IM
         return listTree;
     }
 
+    @Override
+    public boolean changeOrder(String menuId, String direction) {
+        Menu currentMenu = menuMapper.selectById(menuId);
+        if (currentMenu == null) {
+            return false;
+        }
+
+        String parentId = currentMenu.getParentid();
+
+        QueryWrapper<Menu> wrapper = new QueryWrapper<>();
+        wrapper.eq("parentid", parentId);
+        wrapper.orderByAsc("orderno");
+
+        List<Menu> siblings = menuMapper.selectList(wrapper);
+
+        int index = -1;
+        for (int i = 0; i < siblings.size(); i++) {
+            if (siblings.get(i).getId().equals(menuId)) {
+                index = i;
+                break;
+            }
+        }
+
+        if ("up".equals(direction)) {
+            if (index > 0) {
+                swapOrder(siblings.get(index), siblings.get(index - 1));
+            } else {
+                return false; // 已是第一个，无法上移
+            }
+        } else if ("down".equals(direction)) {
+            if (index < siblings.size() - 1) {
+                swapOrder(siblings.get(index), siblings.get(index + 1));
+            } else {
+                return false; // 已是最后一个，无法下移
+            }
+        } else {
+            return false; // 方向错误
+        }
+        return true;
+    }
+
+    private void swapOrder(Menu m1, Menu m2) {
+        Integer temp = m1.getOrderno();
+        m1.setOrderno(m2.getOrderno());
+        m2.setOrderno(temp);
+
+        menuMapper.updateById(m1);
+        menuMapper.updateById(m2);
+    }
+
     /**********************************
      * 用途说明: 生成权菜单权限树
      * 参数说明 sysMenus