Ajax 和状态 302
我遇到了 ajax（和/或 jQuery ajax）和状态 302 的问题。
这就是我正在尝试的：
var xhr = new XMLHttpRequest();
xhr.open("GET", 'some_page_that_I_cant_change.php');
xhr.onreadystatechange = function(){
console.log(xhr.readyState, xhr.status);
};
xhr.send(null);
some_page_that_I_cant_change.php 重定向到 .bin 302 代码。我不想下载这个文件，我只想知道该文件的路径。示例：
./some_page_that_I_cant_change.php
./path/to/bin/file.bin << I wan't only this path as string
问题是 Chrome 自动重定向到该文件，而不告诉我脚本的路径。有解决方法吗？
I'm having a problem with ajax (and/or jQuery ajax) and status 302.
This is what I am trying:
var xhr = new XMLHttpRequest();
xhr.open("GET", 'some_page_that_I_cant_change.php');
xhr.onreadystatechange = function(){
console.log(xhr.readyState, xhr.status);
};
xhr.send(null);
The some_page_that_I_cant_change.php redirects to a .bin with 302 code. I do not want to download this file, I just want know the path to the file. Example:
./some_page_that_I_cant_change.php
./path/to/bin/file.bin << I wan't only this path as string
The problem is that Chrome automatically redirects to the file, without telling me the path to script. Is there a workaround for this?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
如果您使用 HEAD 请求而不是 GET 请求，我怀疑这会达到您想要的效果。您应该只在响应中看到标头，没有响应正文（即不会下载 .bin）。
If you use a HEAD request instead of a GET request, I suspect that will do what you want. You should only see headers in the response, no response body (i.e., no .bin will download).
有一个关于完全相同主题的旧线程，其中包含解决方案和解决方法：
如何在 jQuery Ajax 之后管理重定向请求致电
There's an older thread about exactly the same topic with solutions and work arounds:
How to manage a redirect request after a jQuery Ajax call
一句话：我不认为你能做到这一点，因为 HTTP 协议。
HTTP 协议([1]:http://www.w3.org/Protocols/ rfc2616/rfc2616-sec10.html)规定302表示重定向URI，浏览器遵循。所以，javascript无法获得重定向响应，只能获得最终响应。
所以，你必须通过响应体获取路径。
In a word: I don't think you can do that cause of HTTP protocol.
HTTP protocol([1]:http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html) stipulate 302 means redirect URI, and browsers follows.So,the javascript can't get the redirect response, just get final response.
So,You have to get path by response body.