google-app-engine - 如何在本地 appengine env 中修复 Flask，出现 404/500 错误

问题描述

当我只是尝试运行此 AppEngine 教程时，我遇到了 404 错误（在控制台中）和 500 错误（在浏览器中）

https://cloud.google.com/appengine/docs/standard/python/getting-started/python-standard-env

我遵循了整个教程，从 github 复制了最新的文件，并尝试在本地环境中运行它。

dev_appserver.py --port=8080 --enable_console=yes app.yaml

当我尝试浏览到http://localhost:8080

在控制台中，我得到

HTTPError()
HTTPError()
Traceback (most recent call last):
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\lib
\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 1302, in communicate
    req.respond()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\lib
\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 831, in respond
    self.server.gateway(self).respond()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\lib
\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 2115, in respond
    response = self.req.server.wsgi_app(self.env, self.start_response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\wsgi_server.py", line 292, in __call__
    return app(environ, start_response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\request_rewriter.py", line 314, in _rewriter_m
iddleware
    response_body = iter(application(environ, wrapped_start_response))
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\python\runtime\request_handler.py", line 165,
in __call__
    self._flush_logs(response.get('logs', []))
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\python\runtime\request_handler.py", line 308,
in _flush_logs
    apiproxy_stub_map.MakeSyncCall('logservice', 'Flush', request, response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_stub_map.py", line 97, in MakeSyncCall
    return stubmap.MakeSyncCall(service, call, request, response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_stub_map.py", line 331, in MakeSyncCall
    rpc.CheckSuccess()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_rpc.py", line 136, in CheckSuccess
    self._traceback)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_rpc.py", line 161, in _WaitImpl
    self.request, self.response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\ext\remote_api\remote_api_stub.py", line 223, in MakeSyncCall
    self._MakeRealSyncCall(service, call, request, response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\ext\remote_api\remote_api_stub.py", line 248, in _MakeRealSyncCall

    encoded_response = self._server.Send(self._path, encoded_request)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 485, in Send
    self._Authenticate()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 631, in _Authenticate
    super(HttpRpcServer, self)._Authenticate()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 369, in _Authenticate
    auth_token = self._GetAuthToken(credentials[0], credentials[1])
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 308, in _GetAuthToken
    response = self.opener.open(req)
  File "C:\Python27\lib\urllib2.py", line 435, in open
    response = meth(req, response)
  File "C:\Python27\lib\urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Python27\lib\urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "C:\Python27\lib\urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "C:\Python27\lib\urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 404: Not Found
INFO     2019-04-18 09:56:39,905 module.py:861] default: "GET /form HTTP/1.1" 50
0 -
Traceback (most recent call last):
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\lib
\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 1302, in communicate
    req.respond()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\lib
\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 831, in respond
    self.server.gateway(self).respond()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\lib
\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 2115, in respond
    response = self.req.server.wsgi_app(self.env, self.start_response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\wsgi_server.py", line 292, in __call__
    return app(environ, start_response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\request_rewriter.py", line 314, in _rewriter_m
iddleware
    response_body = iter(application(environ, wrapped_start_response))
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\python\runtime\request_handler.py", line 165,
in __call__
    self._flush_logs(response.get('logs', []))
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\devappserver2\python\runtime\request_handler.py", line 308,
in _flush_logs
    apiproxy_stub_map.MakeSyncCall('logservice', 'Flush', request, response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_stub_map.py", line 97, in MakeSyncCall
    return stubmap.MakeSyncCall(service, call, request, response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_stub_map.py", line 331, in MakeSyncCall
    rpc.CheckSuccess()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_rpc.py", line 136, in CheckSuccess
    self._traceback)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\api\apiproxy_rpc.py", line 161, in _WaitImpl
    self.request, self.response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\ext\remote_api\remote_api_stub.py", line 223, in MakeSyncCall
    self._MakeRealSyncCall(service, call, request, response)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\ext\remote_api\remote_api_stub.py", line 248, in _MakeRealSyncCall

    encoded_response = self._server.Send(self._path, encoded_request)
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 485, in Send
    self._Authenticate()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 631, in _Authenticate
    super(HttpRpcServer, self)._Authenticate()
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 369, in _Authenticate
    auth_token = self._GetAuthToken(credentials[0], credentials[1])
  File "C:\googlecloudsdk\install\google-cloud-sdk\platform\google_appengine\goo
gle\appengine\tools\appengine_rpc.py", line 308, in _GetAuthToken
    response = self.opener.open(req)
  File "C:\Python27\lib\urllib2.py", line 435, in open
    response = meth(req, response)
  File "C:\Python27\lib\urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Python27\lib\urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "C:\Python27\lib\urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "C:\Python27\lib\urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 404: Not Found

在浏览器中，我得到

localhost is currently unable to handle this request.
HTTP ERROR 500

我发现一些帖子有类似的症状，但不准确。并且建议的解决方案都没有解决这个问题。

尝试过： - 在 dev_appserver 中指定端口 8080。- 确保已安装 ASP.NET 框架。- 打开 IIS。- 确保 SDK 是最新版本。

这也直接来自 Google 的教程。

有人有任何见解/想法吗？

标签： google-app-enginegoogle-app-engine-python

google-app-engine - 如何在本地 appengine env 中修复 Flask，出现 404/500 错误

问题描述

解决方案

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