- 访问http://machineA:8080,显示库
- 库被显示出来
- 用户点击“转换”链接,发出以下命令 -
jQuery Ajax请求
$.post('http://machineA:8081', {file_url: 'asfd'}, function(d){console.log(d)})
浏览器发送一个带有以下头部的HTTP OPTIONS请求; 请求头部 - OPTIONS
Host: machineA:8081
User-Agent: ... Firefox/4.01
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Origin: http://machineA:8080
Access-Control-Request-Method: POST
Access-Control-Request-Headers: x-requested-with
服务器的回应如下; 响应头 - OPTIONS (状态 = 200 OK)
Content-Length: 0
Access-Control-Allow-Headers: *
Access-Control-Max-Age: 1728000
Server: CherryPy/3.2.0
Date: Thu, 21 Apr 2011 22:40:29 GMT
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET, OPTIONS
Content-Type: text/html;charset=ISO-8859-1
- 对话随之停止。浏览器理论上应该发送一个POST请求,因为服务器响应了正确的CORS标头(Access-Control-Allow-Origin: *)
为了进行故障排除,我还从http://jquery.com发出了相同的$.post命令。这就是我困惑的地方,从jquery.com发送的POST请求有效,然后发送OPTIONS请求,然后再发送POST请求。此事务的标头如下;
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(状态 = 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(状态 = 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
我弄不清楚为什么同样的请求在一个网站上可以工作,但在另一个网站上却不行。希望有人能指出我漏掉了什么。谢谢你的帮助!