现象:用httpclient发送http请求时,客户端返回: org.apache.http.client.ClientProtocolException at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:822) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754…

js跨域访问提示错误:XMLHttpRequest cannot load http://...... No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 解决方法: 1.如果请求的url是aspx页面,则需要在aspx页面中添加代码:Response.AddHeader("Access-Contro…

默认情况下ajax请求是有同源策略,限制了不同域请求的响应. 例子:http://localhost:23160/HtmlPage.html 请求不同源API http://localhost:22852/api/values, What is "Same Origin"? Two URLs have the same origin if they have identical schemes, hosts, and ports. (RFC 6454) These two URLs h…

在本地用ajax跨域访问请求时报错: XMLHttpRequest cannot loadhttp://www.zjblogs.com/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 查了一翻资料,发现原来是新W3C标准中是这样规定的: 最新的W3C标准里是这么实现HTTP跨域请求的, Cro…

在本地用ajax跨域访问请求时报错: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8080' is therefore not allowed access. 查了一翻资料,发现原来是新W3C标准中是这样规定的: 最新的W3C标准里是这么实现HTTP跨域请求的, Cross-Origin Resource Sharing 简单的来说,就…

用angular发起http.get(),访问后端web API要数据,结果chrome报错:跨域了 Access to XMLHttpRequest at 'http://127.0.0.1:3000/XXX' from origin 'http://127.0.0.1:4200' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resour…

unit: OverbyteIcsHttpProt.pasprocedure THttpCli.SendRequest(const Method, Version: String); var Headers : TStrings; N : Integer; begin {$IFDEF UseBandwidthControl} FBandwidthCount := ; // Reset byte counter if httpoBandwidthControl in FOptions then b…

问题: XMLHttpRequest cannot load http://v.xxx.com. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:63342' is therefore not allowed access. test.html:1 Resource interpreted as Script but transferred…

今天做一个AJAX案例时,浏览器监控到如下错误: XMLHttpRequest cannot load http://54.169.69.60:8081/process_message. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://54.169.69.60' is therefore not allowed access. 网站地址是 http://54.…

ajax请求node.js接口出现了如下的错误: XMLHttpRequest cannot load http://xxx.xxx.xx.xx:8888/getTem?cityId=110105&date=2015-03-04. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 百度了一下,原来是…