问题
I just built my first "web app" for a class using Google App Engine, and it deployed correctly, and works perfectly well on Google's servers. However, when I try to access it on localhost, I get a 500 error:
"Server error The website encountered an error while retrieving http://localhost:8081/. It may be down for maintenance or configured incorrectly."
I have tried using various ports, and none of them seem to work. I am 100% positive I am using the correct port and that the app is actually running with no errors.
I am using Google Chrome and Python 2.7.2 on Mac OS 10.6.8
Any ideas on how to correct this or what configurations to check?
回答1:
Turns out, the issue was that GAE was accessing an older version of python on my computer.
I was able to fix this by opening up the python launcher, copying the path from "Interpreter", and pasting it into GAE under Preferences/Python Path. In my case, the correct path is /usr/local/bin/pythonw
It is important to note that as there is no "ok" or "apply" button here, you must hit enter to apply the path change.
回答2:
"Error 500" is generic for "I asked the server to do something, and it failed".
1) Look in your web server's error logs
2) Debug your "hello world" application
ALSO:
3) Make sure you can run this "hello world":
https://developers.google.com/appengine/docs/python/gettingstarted/helloworld
4) If you can't, then review the setup instructions here:
http://googcloudlabs.appspot.com/setup.html
来源：https://stackoverflow.com/questions/10221165/http-error-500-when-attempting-to-access-localhost