zepot post没有问题,用plupload上传出现了这个错误,options过不去.显示Response for preflight has invalid http status code 405 在global中处理下option protected void Application_BeginRequest() { if (Request.Headers.AllKeys.Contains("Origin") && Request.HttpMethod ==
1.情景展示 ajax调取java服务器请求报错 报错信息如下: 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 但是,请求状态却是成功:200,这是怎么回事? 2.原因分析 ajax请求跨域:ajax出现请求跨域错误问题是因为浏览器的“同源策略”. 同源策略:1995年,同源政策由 Netscap