cherrypy / jquery CORS麻烦 [英] cherrypy/jquery CORS trouble

问题描述

我有一个基于cherrypy的简单的python web服务器。其资源应提供一个API。服务器有以下代码来提供CORS：

I've got a simple python web server based on cherrypy. Its resources shall provide an API. THe server has the following code to provide CORS:

def CORS():
    cherrypy.response.headers["Access-Control-Allow-Origin"] = "*"

if __name__ == "__main__":
    cherrypy.tools.CORS = cherrypy.Tool('before_finalize', CORS)
    cherrypy.quickstart(PyCachedAdmin(), config={'/': {'request.dispatch': cherrypy.dispatch.MethodDispatcher()}})

服务器正在localhost：8080上运行。现在我有一个HTML文件，可在localhost（默认端口80）加载jquery 1.9。我打开浏览器控制台尝试 $。ajax 来向cherrypy服务器执行任何AJAX请求。我一直在尝试：

the server is running on localhost:8080. Now I've got a HTML file, available on localhost (default port 80) which loads jquery 1.9. I open the browser console to try the $.ajax to execute any AJAX request to the cherrypy server. I've been trying:

$.ajax({
  url:'http://localhost:8080/',
  type: "POST",
  dataType: "json",
  data: {command:"version"}
}).done(function(){
  console.log('hej');
});

和

$.ajax({
  url:'http://localhost:8080/',
  type: "POST",
  crossDomain: true,
  dataType: "jsonp",
  data: {command:"version"}
}).done(function(){
  console.log('hej');
});

和

$.support.cors = true

我得到 XMLHttpRequest不能加载http：// localhost：8080 /。原始http：// localhost不被Access-Control-Allow-Origin允许。或 GET http：// localhost：8080 /？callback = jQuery19102827550224028528_1382823727186& command = version& _ = 1382823727187 404（找不到）时使用jsonp（它是神秘的，它发送GET而不是POST）。有几个类似的问题，我试过他们，这些都是我的结果（有些仍然是错误的）。

and nothing worked. I'm getting either XMLHttpRequest cannot load http://localhost:8080/. Origin http://localhost is not allowed by Access-Control-Allow-Origin. or GET http://localhost:8080/?callback=jQuery19102827550224028528_1382823727186&command=version&_=1382823727187 404 (Not Found) when using jsonp (it's mysterious that it sends GET instead of POST). There is a few similar questions around, I tried them and these are my results (that something is still wrong).

PS服务器是完全确定，因为所有卷曲测试通过。

PS the server is perfectly ok, since all curl tests pass. Something is wrong with the cross-domain stuff.

推荐答案

您是否正在启用CORS工具？您可以通过装饰调用方法或在配置上设置它来使用该工具。

Are you activating the CORS tool?. You can use the tool by decorating the calling methods or set it on the configuration.

由于 PyCachedAdmin 的实现没有表示的问题，我可能猜到，可能你没有启用工具，这样做只需要更改配置字典，并像这样：

Given that the implementation of PyCachedAdmin is no expressed on the question I might guess that probably you are not enabling the tool, to do so you just need to change the config dictionary and make something like this:

    cherrypy.quickstart(PyCachedAdmin(),
                        config={
                            '/': {
                               'request.dispatch':
                                    cherrypy.dispatch.MethodDispatcher(),
                               'tools.CORS.on': True}})

或者如果你使用的方法 PyCacheAdmin 已经装饰或使用 _cp_config ，不需要额外的配置，这个答案不会帮助你。

Or if the methods that you are using on PyCacheAdmin has already been decorated or using _cp_config that extra configuration is not required and this answers will not help you.

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