XMLHtt prequest无法加载的http：//本地主机：8080 /存在/ REST / DB / ....产地空不被允许访问控制 - 允许 - 原产地 [英] XMLHttpRequest cannot load http://localhost:8080/exist/rest/db/.... Origin null is not allowed by Access-Control-Allow-Origin
问题描述
我试图使用AJAX调用行为的存在DB REST API来检索XML响应（1）。
谷歌浏览器为我提供了以下控制台错误：
Google Chrome provides me the following console error:
XMLHttpRequest cannot load XMLHttpRequest cannot load http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies. Origin null is not allowed by Access-Control-Allow-Origin Origin null is not allowed by Access-Control-Allow-Origin
虽然萤火虫在Firefox中提供了以下控制台错误：
While Firebug in Firefox provides the following console error:
GET http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies 200 OK X 35ms jquery.min.js(line 18)
这里是code中的AJAX部分：
Here is the ajax portion of the code:
$.ajax({
type: 'GET',
dataType: 'xml',
url: 'http://localhost:8080/exist/rest/db/movies',
data: {
_query: _query_value,
_key: _key_value,
_indent: _indent_value,
_encoding: _encoding_value,
_howmany: _howmany_value,
_start: _start_value,
_wrap: _wrap_value,
_source: _source_value,
_cache: _cache_value
},
success: function(resp){
alert("Resp OK!");
console.log(resp);
},
error: function(hqXHR, textStatus, errorThrown){
var x=0;
alert("fail0 " + hqXHR + " " + textStatus + " " + errorThrown);
}
});
我已阅读此相同的问题的一些相关的问题，但我发现没有运气的任何，我试图解决的。
I have read some related issues on this same problem, but I have found no luck with any of the solution that I tried.
，其中包含以上Ajax code段中的index.html是从我的本地机器访问如下：
The index.html which contains the ajax code segment above is accessed from my local machine as follows:
file:///.../index.html
我曾尝试执行铬如下：
I have tried executing chrome as follows:
chrome.exe --allow-file-access-from-files
另外，我试图将文件部署到一个网上的主机，以便它位于
Also, I tried to deploy the file to an online host so that it is located at
http://www.<somedomain>.com/index.html
这是我最接近的解决办法是改变的具体的数据类型从XML到JSONP。被接收的效应初探，但由于它有望成为XML，错误变得与分析，我认为，与谷歌Chrome控制台返回以下语句：
The closest solution that I had was to change the dataType of the from xml to jsonp. The reponse was received, but since it is expected to be xml, the error became related to parsing, I think, with the following statement returned by the Google Chrome console:
Uncaught SyntaxError: Unexpected token <
和Firebug的控制台：
and Firebug console:
XML can't be the whole program
[Break On This Error]
</exist:result>
movies...3302057 (line 528, col 15)
让我们回到我的问题，如何通过eXist的数据库，我可以适当地检索XML文档？我究竟做错了什么？
期待您的帮助。我是很新的网络开发和正在运行的想法。
Looking forward to your help. I'm quite new to web development and am running out of ideas.
在此先感谢！
其他注意事项：
这是我使用的是坐落在的 http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js
The jquery.min.js that I'm using is located at http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js
的URI 的http：//本地主机：8080 /有/ REST / DB /电影_query =％2Fmovies 时，直接键入任何浏览器的工作原理
The URI http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies works when directly keyed in to any browser.
参考：
(1) - http://www.exist-db.org/exist/devguide_rest.xml;jsessionid=e7096vtg4l7gmocouhe6zhle
更新 （1）看来，我是能够摆脱通过运行CORS问题存在DB作为服务器如下：斌/ server.sh（在UNIX中）或BIN \ server.bat（在Windows中）
Updates (1) It seems that I was able to get rid of the CORS problem by running eXist DB as a server as follows: bin/server.sh (in UNIX) or bin\server.bat (in Windows).
现在，我遇到了另一种类型的问题，虽然。我使用的jquery.js得到以下错误的谷歌浏览器控制台：
Now, I am running into another type of problem, though. I get the following error in the Google Chrome console using jquery.js:
GET http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies jquery.js:8240
jQuery.ajaxTransport.send jquery.js:8240
jQuery.extend.ajax jquery.js:7719
(anonymous function) index.html:43
jQuery.event.dispatch jquery.js:3332
jQuery.event.add.elemData.handle.eventHandle jquery.js:2941
和使用jquery.min.js：
and using jquery.min.js:
GET http://localhost:8080/exist/rest/db/movies?_query=%2Fmovies jquery.min.js:18
f.support.ajax.f.ajaxTransport.send jquery.min.js:18
f.extend.ajax jquery.min.js:18
(anonymous function) index.html:43
f.event.handle jquery.min.js:17
f.event.add.i.handle.k jquery.min.js:16
什么是错误的意思吗？我的哪个code部分我在做什么错？
What does the error mean? Which part of my code am I doing wrongly?
（2）更新1，显然，是我遇到不必要的问题。服务器模式是不工作与我的机器，这就是为什么错误上面出现了。
(2) Update 1, apparently, is an unnecessary problem that I faced. The server mode wasn't working with my machine that's why the errors above showed up.
推荐答案
这是一个跨域请求，是不允许的。从本地主机而不是文件测试：//。此外，远程服务器需要返回正确 CORS 的标头如果打算工作横-Domain比JSONP其他任何数据类型。该JSONP数据类型并不意味着返回XML。
This is a cross-domain request and is not permitted. Test from localhost instead of file://. Additionally, the remote server needs to return the proper CORS headers if it is intended to work cross-domain with any dataType other than JSONP. The JSONP datatype is not meant for returning XML.
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