添加自定义请求标头

我有一个API。我正在尝试使用Ajax Jquery向我的api发送请求，但遇到了问题。以下是我的Ajax请求。我正在以JSON格式发送数据，另外，我需要添加两个请求标头（signedInUserId和accessToken）。但这是行不通的。

  $.ajax( {
                        type: "PUT",
                        contentType: 'application/json',
                        dataType: 'json',
                        beforeSend: function(xhr) { 
                            xhr.setRequestHeader("signedInUserId", "1");
                            xhr.setRequestHeader("accessToken", "testtoken");
                          },
                        url: "url to my api",
                        data: JSON.stringify(data), 
                        success: function( response ) { 
                                 // $('#successMessage').html(response);
                        },
                        complete: function() {
                            //message
           }
                    });         

虽然，如果我发送的请求中没有自定义标头（signedInUserId和accessToken），并且在我的api控制器中，我对自定义标头参数进行了注释，但它的工作原理绝对不错。以下是我的api控制器代码。

    @RequestMapping(value = "test.json", method = { PUT })
public @ResponseBody
Map<String, ? extends Object> test(HttpSession session, @RequestHeader Integer signedInUserId, @RequestHeader String accessToken, @RequestBody MyTestModel myTestModel) {

// working

}

我很困惑为什么在发送自定义标头时它不起作用，在发送自定义标头时是否存在一些问题？

编辑：以下是我的请求和响应标头。

       Request URL:http URL....
       Request Method:OPTIONS
       Status Code:200 OK
       Request Headersview parsed
       OPTIONS /Url/url/add.json HTTP/1.1
       Host: local host:8080
       Connection: keep-alive
       Access-Control-Request-Method: PUT
       Origin:url
       User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36   (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36
       Access-Control-Request-Headers: accept, accesstoken, signedinuserid, content-       type
       Accept: */*
       Referer: url
       Accept-Encoding: gzip,deflate,sdch
       Accept-Language: en-US,en;q=0.8
       Response Headersview parsed
       HTTP/1.1 200 OK
       Server: Apache-Coyote/1.1
       Access-Control-Allow-Origin: *
       Access-Control-Allow-Methods: GET, OPTIONS, POST, PUT, DELETE
       Access-Control-Allow-Headers: Content-Type, x-requested-with
       Access-Control-Max-Age: 1800
       Allow: GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS
       Content-Length: 0
       Date: Sun, 03 Nov 2013 19:11:20 GMT