jQuery的AJAX无法工作（OPTIONS pre-飞行要求订做）指定头时，

问题描述：

AJAX请求工作正常，但现在我通过beforeSend或标题添加一个头，一个OPTIONS pre-航班提出要求，并GET请求被中止。

The AJAX request works fine, but the moment I add a header via beforeSend or headers, an OPTIONS pre-flight request is made and the GET request is aborted.

  Code: $.ajax({
        type: "GET",
        crossDomain: true,
         beforeSend: function (xhr)
         {
         xhr.setRequestHeader("session", $auth);
         },
        url: $url,
        success: function (data) {
            $('#something').html(data);
        },
        error: function (request, error) {
            $('#something').html("<p>Error getting values</p>");
        }
    });

类似 AJAX请求W / O指定表头（现在我添加/修改标题，一个OPTIONS调用时）

Similar AJAX Request w/o headers specified (the moment I add/modify header, an OPTIONS call is made)

Request GET /api/something?filter=1 HTTP/1.1
Referer http://app.xyz.dj/dashboard
Accept  application/json, text/javascript, */*; q=0.01
Accept-Language en-US
Origin  http://app.xyz.dj
Accept-Encoding gzip, deflate
User-Agent  Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; MASMJS; rv:11.0) like Gecko
Host    162.243.13.172:8080
DNT 1
Connection  Keep-Alive
Cache-Control   no-cache

类似的服务器响应头（用于GET请求）

Similar Server Response Header (for GET request)

Response    HTTP/1.1 200 OK
Server  Apache-Coyote/1.1
Access-Control-Allow-Origin *
Access-Control-Allow-Methods    GET, POST, DELETE, PUT, OPTIONS, HEAD
Access-Control-Allow-Headers    Content-Type, Accept, X-Requested-With
Access-Control-Allow-Credentials    true
Content-Type    application/json
Transfer-Encoding   chunked
Date    Thu, 09 Jan 2014 14:43:07 GMT

我在做什么错了？

What I am doing wrong?

答

解决。感谢@JasonP的指针。更改服务器的响应头从

Solved. Thanks @JasonP for pointers. Changed Server Response Headers from

访问控制 - 允许 - 标题：*

Access-Control-Allow-Headers:*

于特定的

访问控制 - 允许 - 头：内容类型，接受，X-要求-有了，会议

Access-Control-Allow-Headers: Content-Type, Accept, X-Requested-With, Session

和现在的作品！

jQuery的AJAX无法工作（OPTIONS pre-飞行要求订做）指定头时，

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