perf: 优化菜单管理模块service层及异常处理

ruoyi-fastapi-backend/utils/string_util.py

@@ -1,3 +1,6 @@
+from config.constant import CommonConstant
+
+
 class StringUtil:
     """
     字符串工具类
@@ -29,3 +32,12 @@ class StringUtil:
         :return: 校验结果
         """
         return string is None or len(string) == 0
+
+    @classmethod
+    def is_http(cls, link: str):
+        """
+        判断是否为http(s)://开头
+        :param link: 链接
+        :return: 是否为http(s)://开头
+        """
+        return link.startswith(CommonConstant.HTTP) or link.startswith(CommonConstant.HTTPS)