ajax跨域上传文件加了xhr报不支持options错误

Question

用ajax跨域上传文件不加xhr就能请求成功，为了实现进度条功能在ajax里面加了xhr就报错了 $.ajax({url: "http://localhost:823/api/FileStream/Upload",type: "post",contentType: false,cache: false,processData: false,contentType: false,data: formdata,xhr:function(){ var myXhr = $.ajaxSettings.xhr(); if (myXhr.upload) { myXhr.upload.addEventListener("progress", progressHandlingFunction,false); } return myXhr; },success: function (text){ if (text == "success") { alert("上传成功"); }

Answer 1

可能是Access-Control-Allow-Origin:*引起的，建议将*改为http://localhost:63695试试