CORS预检响应未成功，已拦截跨源请求：同源策略禁止读取位于

已拦截跨源请求&＃xff1a;同源策略禁止读取位于 http://47.55.32.128:8081/abj_api/Login/GetRoleFunctions?roleId&＃61;800 的远程资源。&＃xff08;原因&＃xff1a;CORS 请求未能成功&＃xff09;。

后台接口提供方需要做如下修改&＃xff1a;

Global.asax配置&＃xff0c;添加如下方法

protected void Application_BeginRequest(object sender, EventArgs e){System.Web.HttpApplication app &＃61; sender as System.Web.HttpApplication;HttpResponse response &＃61; app.Response;//支持跨域 if (app.Request.HttpMethod &＃61;&＃61; "OPTIONS"){//支持跨域response.AddHeader("Access-Control-Allow-Methods", "*");response.AddHeader("Access-Control-Allow-Headers", "*");response.AddHeader("Access-Control-Allow-Origin", "*");response.AddHeader("Cache-Control", "no-cache"); response.StatusCode &＃61; 200;response.End();}else{response.AddHeader("Access-Control-Allow-Origin", "*");response.AddHeader("Access-Control-Allow-Headers", "*");response.AddHeader("Access-Control-Allow-Methods", "*");response.AddHeader("Cache-Control", "no-cache");//response.AddHeader("Access-Control-Allow-Methods", "GET, POST,PUT, DELETE");//response.AddHeader("Access-Control-Allow-Headers", "Content-Type");}}