js 跨域访问

var serviceUrl ="http://localhost:8082/txieasyui?taskFramePN=Mobilename&command=ToLogin&colname=json_ajax&colname1={%27dataform%27:%27eui_form_data%27,%27backfields%27:%27ERR;USERID;loginflag;LOGINNAME;USERNAME;ORGTYPE;ORGID%27}&loginname=sysadmin&loginpass=202cb962ac59075b964b07152d234b70&sysname=rmd";
$.ajax({
url:serviceUrl,
dataType:"get",
success:function(data){

},
error:function(data){
var data=JSON.parse(data.responseText);
if(data.EAF_ERROR)
alert(data.EAF_ERROR);
else{
//alert(data);
// 将登录名和密码保存到cookies
//setCookie("sysadmin", "202cb962ac59075b964b07152d234b70");
window.open("http://localhost:8082/TiBom/Project/bomIndex.jsp?loginname=sysadmin&ssokey=123456");
}
}
})

在被请求的文件里添加

/**设置响应头允许ajax跨域访问**/
response.setHeader("Access-Control-Allow-Origin","*");
/*星号表示所有的异域请求都可以接受，*/
response.setHeader("Access-Control-Allow-Methods","GET,POST");