优化下代码

lib/java110/api/Java110SessionApi.js

@@ -116,6 +116,13 @@ export function getUserInfo() {
 		return;
 	}
 	let _userInfo = JSON.parse(desDecrypt(userInfo));
+	if (isNull(userInfo)) {
+		uni.redirectTo({
+			url: "/pages/login/login"
+		});
+		return;
+	}
+	
 
 	return _userInfo;
 }

lib/java110/utils/StringUtil.js

@@ -3,7 +3,7 @@
  * @param {Object} _obj 判断对象
  */
 const isNull = function(_obj){
-	if(_obj == null || _obj == undefined || _obj == ''){
+	if(!_obj || _obj == null || _obj == undefined || _obj == ''){
 		return true;
 	}
 	return false;