问题：
I would like to add a custom header to an AJAX POST request from jQuery.我想向来自 jQuery 的 AJAX POST 请求添加自定义标头。
I have tried this:我试过这个：
$.ajax({
type: 'POST',
url: url,
headers: {
"My-First-Header":"first value",
"My-Second-Header":"second value"
}
//OR
//beforeSend: function(xhr) {
// xhr.setRequestHeader("My-First-Header", "first value");
// xhr.setRequestHeader("My-Second-Header", "second value");
//}
}).done(function(data) {
alert(data);
});
When I send this request and I watch with FireBug, I see this header:当我发送此请求并使用 FireBug 观看时，我看到以下标头：
OPTIONS xxxx/yyyy HTTP/1.1选项 xxxx/yyyy HTTP/1.1
Host: 127.0.0.1:6666主持人：127.0.0.1:6666
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0用户代理：Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9, / ;q=0.8接受：text / html的，应用/ XHTML + xml的，应用/ XML; Q = 0.9，/ Q = 0.8
Accept-Language: fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3接受语言：fr,fr-fr;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate接受编码：gzip、deflate
Connection: keep-alive连接：保持连接
Origin: null出处：空
Access-Control-Request-Method: POST访问控制请求方法：POST
Access-Control-Request-Headers: my-first-header,my-second-header访问控制请求标头：我的第一个标头，我的第二个标头
Pragma: no-cache编译指示：无缓存
Cache-Control: no-cache缓存控制：无缓存
Why do my custom headers go to Access-Control-Request-Headers :为什么我的自定义标头转到Access-Control-Request-Headers ：
Access-Control-Request-Headers: my-first-header,my-second-header访问控制请求标头：我的第一个标头，我的第二个标头
I was expecting a header values like this:我期待这样的标题值：
My-First-Header: first value My-First-Header：第一个值
My-Second-Header: second value My-Second-Header：第二个值
Is it possible?是否有可能？
解决方案：
参考一： https://en.stackoom.com/question/gLfB参考二： https://stackoom.com/question/gLfB