我在本地局域网(machineA)上有一台机器，它有两个web服务器。第一个是XBMC中的内置程序(在端口8080上)，它显示我们的库。第二个服务器是一个CherryPy python脚本(端口8081)，我用它按需触发文件转换。文件转换由XBMC服务器提供的页面的AJAX POST请求触发。
转到http://machineA:8080，显示库 显示Library。 用户单击“转换”链接，发出以下命令-
jQuery Ajax请求
$.post('http://machineA:8081', {file_url: 'asfd'}, function(d){console.log(d)})
浏览器发出一个带有以下报头的HTTP OPTIONS请求;
请求头- OPTIONS
Host: machineA:8081
User-Agent: ... Firefox/4.01
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Origin: http://machineA:8080
Access-Control-Request-Method: POST
Access-Control-Request-Headers: x-requested-with
服务器响应如下;
响应头- OPTIONS (STATUS = 200 OK)
Content-Length: 0
Access-Control-Allow-Headers: *
Access-Control-Max-Age: 1728000
Server: CherryPy/3.2.0
Date: Thu, 21 Apr 2011 22:40:29 GMT
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET, OPTIONS
Content-Type: text/html;charset=ISO-8859-1
然后谈话就停止了。理论上，浏览器应该在服务器响应正确的(?)时发出POST请求。CORS报头(Access-Control-Allow-Origin: *)
为了排除故障，我还发布了相同的$。从http://jquery.com发布命令。这就是我难住的地方，从jquery.com, post请求工作，OPTIONS请求被post发送。来自该事务的标题如下;
请求头- OPTIONS
Host: machineA:8081
User-Agent: ... Firefox/4.01
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Origin: http://jquery.com
Access-Control-Request-Method: POST
响应头- OPTIONS (STATUS = 200 OK)
Content-Length: 0
Access-Control-Allow-Headers: *
Access-Control-Max-Age: 1728000
Server: CherryPy/3.2.0
Date: Thu, 21 Apr 2011 22:37:59 GMT
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET, OPTIONS
Content-Type: text/html;charset=ISO-8859-1
请求头- POST
Host: machineA:8081
User-Agent: ... Firefox/4.01
Accept: */*
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Referer: http://jquery.com/
Content-Length: 12
Origin: http://jquery.com
Pragma: no-cache
Cache-Control: no-cache
响应头- POST (STATUS = 200 OK)
Content-Length: 32
Access-Control-Allow-Headers: *
Access-Control-Max-Age: 1728000
Server: CherryPy/3.2.0
Date: Thu, 21 Apr 2011 22:37:59 GMT
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET, OPTIONS
Content-Type: application/json
我不明白为什么同样的请求在一个站点上可以工作，而在另一个站点上就不行。我希望有人能指出我错过了什么。谢谢你的帮助!
