CherryPy WSGIServer提供静态文件的KeyError [英] KeyError with CherryPy WSGIServer serving static files

问题描述

我正在尝试使用CherryPy的WSGI服务器来提供静态文件，例如

每次我尝试击中服务器应该能够显示的任何内容时，此内容都会显示两次.当我将Flask应用程序连接到服务器时，Flask应用程序可以按预期工作，但是静态文件投放仍然出现相同的错误.

我需要怎么做才能使 staticdir.handler 工作?

解决方案

我已经尝试了各种方法来使它正常工作，直到今天还遇到了您所看到的KeyError(以及其他问题).

通过修改此要点的静态文件(包括在下面).

  import os导入cherrypy从cherrypy导入wsgiserver从my_wsgi_app导入wsgiPATH = os.path.abspath(os.path.join(os.path.dirname(__ file__)，'public'))类Root(object):经过def make_static_config(static_dir_name):"此处设置了所有自定义静态配置，因为大多数是通用的，因此它只生成一次是很有意义的."static_path = os.path.join('/'，static_dir_name)路径= os.path.join(PATH，static_dir_name)配置= {static_path:{'tools.staticdir.on':是的，'tools.staticdir.dir':路径}}打印配置返回cherrypy.tree.mount(Root()，'/'，config = configuration)#假设您的应用程序的媒体路径不同，例如"c"，"i"和"j"application = wsgiserver.WSGIPathInfoDispatcher({'/':wsgi.application，'/c':make_static_config('c')，'/j':make_static_config('j')，'/i':make_static_config('i')})服务器= wsgiserver.CherryPyWSGIServer(('0.0.0.0'，8070)，应用程序，server_name ='www.cherrypy.example')尝试:server.start()除了KeyboardInterrupt:打印正在终止服务器..."server.stop() 

希望包装Flask应用程序会非常相似.

对我来说，关键是在虚拟类上使用 cherrypy.tree.mount ，而不是尝试直接使用staticdir.handler.

出于好奇-我用要点中的代码自定义了django-cherrypy的runcpserver管理命令的版本，尽管事后看来，从头开始创建新命令可能会更容易.

祝您好运(并感谢Github上的 Alfredo Deza )！

I'm trying to use CherryPy's WSGI server to serve static files, like in Using Flask with CherryPy to serve static files. Option 2 of the accepted answer there looks exactly like what I'd like to do, but I'm getting a KeyError when I try to use the static directory handler.

What I've tried:

>>>> import cherrypy
>>>> from cherrypy import wsgiserver
>>>> import os
>>>> static_handler = cherrypy.tools.staticdir.handler(section='/', dir=os.path.abspath('server_files')
>>>> d = wsgiserver.WSGIPathInfoDispatcher({'/': static_handler})
>>>> server = wsgiserver.CherryPyWSGIServer(('localhost', 12345), d)
>>>> server.start()

Then, when I try to access the server I'm getting a 500 response and the following error in the console:

KeyError('tools',)
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/cherrypy/wsgiserver/wsgiserver2.py", line 1353, in communicate
    req.respond()
  File "/Library/Python/2.7/site-packages/cherrypy/wsgiserver/wsgiserver2.py", line 868, in respond
    self.server.gateway(self).respond()
  File "/Library/Python/2.7/site-packages/cherrypy/wsgiserver/wsgiserver2.py", line 2267, in respond
    response = self.req.server.wsgi_app(self.env, self.start_response)
  File "/Library/Python/2.7/site-packages/cherrypy/wsgiserver/wsgiserver2.py", line 2477, in __call__
    return app(environ, start_response)
  File "/Library/Python/2.7/site-packages/cherrypy/_cptools.py", line 175, in handle_func
    handled = self.callable(*args, **self._merged_args(kwargs))
  File "/Library/Python/2.7/site-packages/cherrypy/_cptools.py", line 102, in _merged_args
    tm = cherrypy.serving.request.toolmaps[self.namespace]
KeyError: 'tools'

This is displayed twice for each time I try to hit anything that the server should be able to display. When I hooked up a Flask app to the server the Flask app worked as expected, but the static file serving still gave the same error.

What do I need to do to get the staticdir.handler to work?

解决方案

I've tried various ways of getting this to work and up until today was also hitting the KeyError you have been seeing (among other issues).

I finally managed to get CherryPy to serve static alongside a Django app by adapting the code from this gist (included below).

import os
import cherrypy
from cherrypy import wsgiserver

from my_wsgi_app import wsgi

PATH = os.path.abspath(os.path.join(os.path.dirname(__file__), 'public'))


class Root(object):
    pass

def make_static_config(static_dir_name):
    """
    All custom static configurations are set here, since most are common, it
    makes sense to generate them just once.
    """
    static_path = os.path.join('/', static_dir_name)
    path = os.path.join(PATH, static_dir_name)
    configuration = {static_path: {
        'tools.staticdir.on': True,
        'tools.staticdir.dir': path}
    }
    print configuration
    return cherrypy.tree.mount(Root(), '/', config=configuration)

# Assuming your app has media on diferent paths, like 'c', 'i' and 'j'
application = wsgiserver.WSGIPathInfoDispatcher({
    '/': wsgi.application,
    '/c': make_static_config('c'),
    '/j': make_static_config('j'),
    '/i': make_static_config('i')})

server = wsgiserver.CherryPyWSGIServer(('0.0.0.0', 8070), application,
                                       server_name='www.cherrypy.example')
try:
    server.start()
except KeyboardInterrupt:
    print "Terminating server..."
    server.stop()

Hopefully wrapping a Flask app will be fairly similar.

The key for me was using the cherrypy.tree.mount on a dummy class, rather than trying to use the staticdir.handler directly.

For the curious - I used the code in the gist to customise a version of django-cherrypy's runcpserver management command, although in hindsight it would probably have been easier to create a new command from scratch.

Good luck (and thanks to Alfredo Deza)!

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