解决ajax跨域请求数据cookie丢失问题

xhrFields: {
            withCredentials: true
        },
        crossDomain: true,
$.ajax({
        type: postType,
        url: url,
        data: postData || '',
        xhrFields: {
            withCredentials: true
        },
        crossDomain: true,
        suess: function () {
            suessCallback.apply(scope || this, arguments);
        },
        failureCallback: function () {
            failureCallback.apply(scope || this, arguments);
        },
        dataType: dataType
    });

header("Aess-Control-Allow-Credentials: true");
header('Aess-Control-Allow-Origin: );