解决添加菜单编号和父编号一致会导致递归的bug

src/main/java/com/stylefeng/guns/common/exception/BizExceptionEnum.java

@@ -46,6 +46,8 @@ public enum BizExceptionEnum {
 	/**
 	 * 错误的请求
 	 */
+	MENU_PCODE_COINCIDENCE(400,"菜单编号和副编号不能一致"),
+	EXISTED_THE_MENU(400,"菜单编号重复，不能添加"),
 	DICT_MUST_BE_NUMBER(400,"字典的值必须为数字"),
 	REQUEST_NULL(400, "请求有错误"),
 	SESSION_TIMEOUT(400, "会话超时"),

src/main/java/com/stylefeng/guns/modular/system/controller/MenuController.java

@@ -140,6 +140,13 @@ public class MenuController extends BaseController {
         if (result.hasErrors()) {
             throw new BussinessException(BizExceptionEnum.REQUEST_NULL);
         }
+
+        //判断是否存在该编号
+        String existedMenuName = ConstantFactory.me().getMenuNameByCode(menu.getCode());
+        if (ToolUtil.isNotEmpty(existedMenuName)) {
+            throw new BussinessException(BizExceptionEnum.EXISTED_THE_MENU);
+        }
+
         //设置父级菜单编号
         menuSetPcode(menu);
 
@@ -230,6 +237,12 @@ public class MenuController extends BaseController {
             Menu pMenu = menuMapper.selectById(code);
             Integer pLevels = pMenu.getLevels();
             menu.setPcode(pMenu.getCode());
+
+            //如果编号和父编号一致会导致无限递归
+            if (menu.getCode().equals(menu.getPcode())) {
+                throw new BussinessException(BizExceptionEnum.MENU_PCODE_COINCIDENCE);
+            }
+
             menu.setLevels(pLevels + 1);
             menu.setPcodes(pMenu.getPcodes() + "[" + pMenu.getCode() + "],");
         }