调整视图消息类型

src/message/view-message-service.ts

@@ -90,7 +90,7 @@ export default class ViewMessageService {
      * @type {string}
      * @memberof ViewMessageService
      */
-    public type:string = "";
+    public type:string = "info";
 
     /**
      * 视图消息是否支持删除