不能从阿贾克斯getAllResponseHeaders自定义HTTP头响应 [英] Can't Get Custom HTTP Header Response from Ajax getAllResponseHeaders
问题描述
我得到的响应数据,但我不能让我的自定义HTTP头数据。
I do get the response data, but I can't get my custom HTTP header data.
是的,这是一个跨域请求。我在做一个Ajax请求的JavaScript。我一直试图与XMLHtt prequest也jQuery的$。阿贾克斯。我已经做了我的服务器的设置,我在发送数据时具有以下设置:
Yes, this is a cross-domain request. I am doing an Ajax request with Javascript. I've tried this with XMLHttpRequest and also jQuery $.ajax. I've done my server settings, I have these set when sending data:
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET
我做得到我想要的响应数据。但我不能得到充分的HTTP标头的响应。
I do get the response data that I want. But I can't get full HTTP header response.
使用PHP,我设定发送文本响应之前以下。所以,我认为我应该得到它与getAllResponseHeaders()。
With PHP, I set the following before sending the text response. So I assume that I should get it with getAllResponseHeaders().
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('My-Own-Test: nodatahere');
但这里是我得到了。
But here's what I got.
Content-Type: text/plain; charset=x-user-defined
Cache-Control: must-revalidate, post-check=0, pre-check=0
Expires: 0
它缺少我 - 拥有 - 测试
。仅供参考缘故,这里是我的javascript:
It's missing the My-Own-Test
. Just for reference sake, here's my Javascript:
var formData = new FormData();
formData.append('username', 'my_username');
formData.append('book_id', 'test password');
var xhr = new XMLHttpRequest();
xhr.open('POST', 'https://mydomain.com/proc.php', true);
xhr.overrideMimeType("text/plain; charset=x-user-defined");
xhr.onload = function(e) {
console.log(this.getAllResponseHeaders());
};
xhr.send(formData);
我甚至尝试了使用jQuery ...相同的结果。
I even tried it with jQuery... same result.
var data_to_send = {
username: 'my_username',
password: 'test_password'
};
var ajaxObj;
ajaxObj = $.ajax({
url: "https://mydomain.com/proc.php",
data: data_to_send,
type: "POST",
beforeSend: function ( xhr ) {
xhr.overrideMimeType("text/plain; charset=x-user-defined");
}
})
.done(function ( data ) {
console.log( ajaxObj.getAllResponseHeaders() );
});
不过......没有运气。
Still... no luck.
但是,如果我通过萤火虫或Chrome的开发人员工具,我可以看到,这些工具做回完整的HTTP头信息,包括内容长度
,内容编码
,因人而异
, X-Powered-By中
,设置Cookie
,服务器
,当然我 - 拥有 - 测试
。
But if I go through Firebug or Chrome's Developer Tool, I can see that those tools do return full HTTP header information, including Content-Length
, Content-Encoding
, Vary
, X-Powered-By
, Set-Cookie
, Server
, and of course My-Own-Test
.
推荐答案
我要感谢 JBL 指着我的正确因此质疑。我现在...
I wanna thank jbl for pointing me to the right SO question. I got it now...
那么,OK ......答案。如果你想设置自己的HTTP头信息,然后利用跨域Ajax,或者类似的东西取水的时候,这里有一些额外的HTTP头,你应该设置你的服务器端,发送响应文本之前。
So, OK... the answer. If you ever wanted to set your own HTTP Header information, and then fetch it using cross-domain Ajax, or something like that, here are some extra HTTP Header you should set on your server side, before sending the response text.
header('Access-Control-Allow-Origin: *');
header("Access-Control-Allow-Methods: POST, GET");
header('Custom-Header: Own-Data');
header('Access-Control-Expose-Headers: Custom-Header');
以上示例使用PHP。但是,用你自己的语言,你什么都用它来进行设置。
Example above uses PHP. But use your own language, what ever you use to set them.
当我问到这个问题,我把所有的,除了访问控制 - 揭露-头
。将在后,我的JavaScript的Ajax可以读取HTTP头定制头的内容。
When I asked this question, I had all of that except Access-Control-Expose-Headers
. After putting that in, my Javascript Ajax can read the content of HTTP Header Custom-Header.
这篇关于不能从阿贾克斯getAllResponseHeaders自定义HTTP头响应的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!