我在Apache Proxy后面运行Jenkins服务器。
我正在使用Chrome作为浏览器
现在在几个地方我有javascript代码，看起来像这样。
Request URL:http://myserver.com/jenkins/job/WPF-TryBuild/1190/artifact/Win32_Debug_build_log.xml
Request Method:GET
Status Code:200 OK
Remote Address:82.39.249.244:80
Response Headers
view parsed
HTTP/1.1 200 OK
Date: Mon, 31 Oct 2016 12:35:58 GMT
Server: Jetty(9.2.z-SNAPSHOT)
X-Content-Type-Options: nosniff
Content-Security-Policy: sandbox allow-scripts; default-src 'self'; script-src 'self' https://ajax.googleapis.com;
X-WebKit-CSP: sandbox allow-scripts; default-src 'self'; script-src 'self' https://ajax.googleapis.com;
X-Content-Security-Policy: sandbox allow-scripts; default-src 'self'; script-src 'self' https://ajax.googleapis.com;
Last-Modified: Mon, 31 Oct 2016 10:40:11 GMT
Expires: Mon, 31 Oct 2016 10:40:11 GMT
Accept-Ranges: bytes
Content-Type: application/xml
Content-Encoding: gzip
Access-Control-Allow-Origin: null
Access-Control-Allow-Methods: GET, PUT, OPTIONS
Access-Control-Allow-Headers: X-Requested-With
Keep-Alive: timeout=5, max=93
Connection: Keep-Alive
Transfer-Encoding: chunked
Request Headers
view parsed
GET /jenkins/job/WPF-TryBuild/1190/artifact/Win32_Debug_build_log.xml HTTP/1.1
Host: myserver.com
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Accept: application/xml, text/xml, */*; q=0.01
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36
Referer: http://myserver.com/jenkins/job/WPF-TryBuild/1190/?auto_refresh=false
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
Cookie: ACEGI_SECURITY_HASHED_REMEMBER_ME_COOKIE=Sm9uOjE0Nzg4NjU1MTIyODg6ZjNlNmM5NDIwZDQwYWU0YzdiOTc2MWJjN2NjNzUxNDE5NDdhNmI3OGI0M2E1OGIxMzM4NjEwYmEyZjRmOGUwZA==; JSESSIONID.e269d02c=1nyxka737w02s1v7tq8opej8fu; JSESSIONID.61f82bd1=5qgyu4eegvkozmo5u1axqc6t; screenResolution=1440x900; JSESSIONID.61f82bd1=238or6iqc0se7r2lo4cyyco4; hudson_auto_refresh=false
（当然，在“完成”部分有更有趣的事情）
现在，在一个地方它工作正常，就是它在jenkins userContent（你可以把你希望jenkins通过HTML提供的文件的文件夹）放在jenkins生成的页面上从HTML加载的javascript文件中。
查看我看到的标题
Request URL:http://myserver.com/jenkins/job/WPF-TryBuild/1190/artifact/Win32_Debug_build_log.xml
Request Method:OPTIONS
Status Code:403 Forbidden
Remote Address:82.39.249.244:80
Response Headers
view parsed
HTTP/1.1 403 Forbidden
Date: Mon, 31 Oct 2016 13:18:45 GMT
Server: Jetty(9.2.z-SNAPSHOT)
X-Content-Type-Options: nosniff
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Type: text/html;charset=UTF-8
X-Hudson: 1.395
X-Jenkins: 2.27
X-Jenkins-Session: f3999f25
X-Hudson-CLI-Port: 8081
X-Jenkins-CLI-Port: 8081
X-Jenkins-CLI2-Port: 8081
X-You-Are-Authenticated-As: anonymous
X-You-Are-In-Group:
X-Required-Permission: hudson.model.Hudson.Read
X-Permission-Implied-By: hudson.security.Permission.GenericRead
X-Permission-Implied-By: hudson.model.Hudson.Administer
Set-Cookie: JSESSIONID.61f82bd1=tts6a6zkw60r1rfiu36q4l7b8;Path=/jenkins;HttpOnly
Access-Control-Allow-Origin: null
Access-Control-Allow-Methods: GET, PUT, OPTIONS
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: x-requested-with
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 383
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Request Headers
view parsed
OPTIONS /jenkins/job/WPF-TryBuild/1190/artifact/Win32_Debug_build_log.xml HTTP/1.1
Host: myserver.com
Connection: keep-alive
Access-Control-Request-Method: GET
Origin: null
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36
Access-Control-Request-Headers: x-requested-with
Accept: */*
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
所以它正在发送一个GET请求，正在为我在Apache代理中设置它们提供头文件，并且该页面工作正常。
但是，如果我在userContent中的HTML页面加载的javascript文件中执行相同的操作，我会看到以下标题
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fancybox/2.1.5/jquery.fancybox.css">
<script type="text/javascript"
src="https://cdnjs.cloudflare.com/ajax/libs/fancybox/2.1.5/jquery.fancybox.pack.js"></script>所以它正在发送一个失败的OPTIONS请求，因此代码在那里失败并且页面不起作用（顺便说一句，当我没有
时它工作正常所以我有两个问题。
1）为什么我在一种情况下看到OPTIONS请求，而在另一种情况下却看不到？
2）我怎样才能使它发挥作用？
现在我知道当jquery是跨域的时候会发送一个OPTIONS请求，但我不知道这将如何符合跨域的要求。
所有东西都由同一台服务器提供，唯一的区别是在一种情况下，父页面是由jenkins在url / jenkins / job / WPF-TryBuild / [job_number]
生成的而在失败的情况下，父页面是jenkins在
提供的html页面/jenkins/userContent/WpfReports/msbuild/MSBuildLog.html
（顺便说一句，将Access-Control-Allow-Origin从null更改为*在任何一种情况下均无效）