App Engine 404 Error Page
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Google App Engine 404
ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack google app engine 404 not found Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to implement a custom 404 error page on App Engine,
404 Error Page Template
Java? up vote 11 down vote favorite 1 Hi I'm trying to set up a static error page for 404 not found errors on app engine. According to https://developers.google.com/appengine/docs/java/config/webxml#Error_Handlers: it says 404 cannot be customized. And according to: https://developers.google.com/appengine/docs/java/config/appconfig#Custom_Error_Responses it don't seem to support 404 too. However, https://groups.google.com/forum/?fromgroups=#!topic/google-appengine-java/3C-pY5ta2HQ, seems to suggest that 404 error page can be customised. I'm confused right now. java google-app-engine http-status-code-404 share|improve this question edited funny 404 error page Nov 3 '12 at 12:17 asked Nov 2 '12 at 1:22 tommi 2,95642851 I am unfamiliar with App Engine, but according to the documentation you have found, it is currently not possible to customize the 404 File Not Found page. –Zéychin Nov 2 '12 at 1:35 i realised this problem only doesn't work on the local dev server. however, when i deploy the app to app engine. i can see the 404 error page that was configured using web.xml. thanks for all your help. –tommi Nov 4 '12 at 3:02 add a comment| 4 Answers 4 active oldest votes up vote 9 down vote accepted i realised this problem happens when running the app on local dev server. however, when i deploy the app to app engine. i can see the 404 error page that was configured using web.xml. thanks for all your help. share|improve this answer answered Nov 4 '12 at 3:03 tommi 2,95642851 I have raised a bug for the same code.google.com/p/googleappengine/issues/detail?id=10432 –kunal Dec 28 '13 at 12:44 Still it is not working in both local and deployed version. –Fizer Khan Dec 30 '13 at 9:15 add a comment| up vote 5 down v
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404 Error Page Examples
posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community 404 error page html Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Google App Engine WebApp/Python Custom 404 Handler Implementation up vote http://stackoverflow.com/questions/13187970/how-to-implement-a-custom-404-error-page-on-app-engine-java 3 down vote favorite 2 I'm using GAE, Google App Engine with Webapp using Python. I've been trying to implement a custom error handler, or template, or along those lines. GAE provides some documentation here however it doesn't provide enough in the example for implementation (for me). I've also looked at all these wonderful examples on another StackOverflow question here - but cannot understand how to implement it http://stackoverflow.com/questions/12473368/google-app-engine-webapp-python-custom-404-handler-implementation into my current main.py file. import os from google.appengine.ext import webapp from google.appengine.ext.webapp import util from google.appengine.ext.webapp import template class MainHandler(webapp.RequestHandler): def get (self, q): if q is None: q = 'static/index.html' path = os.path.join (os.path.dirname (__file__), q) self.response.headers ['Content-Type'] = 'text/html' self.response.out.write (template.render (path, {})) def main (): application = webapp.WSGIApplication ([('/(.*html)?', MainHandler)], debug=False) util.run_wsgi_app (application) if __name__ == '__main__': main () I've tried making another class, and implementing it before the MainHandler as well as a new def in the MainHandler. The only times I've gotten the 404 to display, it's displayed globally, meaning even the index.html file was a "404". The last thing I tried was implementing something along the lines of: if not os.path.exists (_file_): self.redirect(/static/error/404.html) My app.yaml file is: application: appname version: 1 runtime: python api_version: 1 error_handlers: - file: static/error/404.html - error_code: over_quota file: static/error/404.html handlers: - url: /(.*\.(gif|png|jpg|ico|js|css)) static_files: \1 upload: (.*\.(gif|png|jpg|ico|js|css)) - url: /robots.txt static_files: robots.txt upload: robots.txt - url: /favicon.ico static_files: favicon.ico upload: favicon.ico - url: .* script: main.py I cannot find any guides/tutorials to the implementation of the 404 handler, just code extracts. Much appreciated everyone! Edit: As per clarification from Hans below, I want to return a 404 when a fi
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api_version: 1 threadsafe: true handlers: - url: /static static_dir: static http_headers: Vary: Accept-Encoding - url: /articles/.* script: articles.app On the Development Environment, I get the following error when I visit http://localhost:8080/ i.e the home page Not found error: / did not match any patterns in application configuration. On Appengine, a standard 404 Error is shown Error: Not Found The requested URL / was not found on this server. This is because the app.yaml file does not specify any handler for "/" Here is the articles.py file articles.py import webapp2 class HomePage(webapp2.RequestHandler): def get(self): self.response.write.out("Hello Birds!") app = webapp2.WSGIApplication( [ (r'/articles/', HomePage) ], debug=True) Specifying Custom Error Pages in app.yaml Let us use the advice on this Google Developers page under Custom Error Responses section error_handlers: - file: default_error.html - error_code: over_quota file: over_quota.html The page further goes on to say, that error_code can be 1. over_quota 2. dos_api_denial 3. timeout Whether this error_handler can handle 404 or 500 errors is not mentioned. The error_code part is optional. So we edit app.yaml as follows app.yaml app.yaml application: appname version: 1 runtime: python27 api_version: 1 threadsafe: true handlers: - url: /static static_dir: static http_headers: Vary: Accept-Encoding - url: /articles/.* script: articles.app error_handlers: - file: default_error.html On testing on both the development server and live environments, the Custom error page, default_error.html is not served for 404 errors. We get the same 404 error as before. I could not come up with something that would raise a 500 error without having to use a script. Additionally, I read this comment on this Google Code page "Over quota error pages are only displayed if your entire app is over quota (eg, out of instance hours or bandwidth). If you've run out of quota for a specific API, then an exception is thrown..." Out of the three error codes supported, timeout is one which we can try to reproduce. Any request that takes more than 30 seconds will produce a timeout error. Change articles.py to the following articles.py import webapp2,time class HomePage(webapp2.RequestHandler): def get(self): time.sleep(140) self.response.write("Hello Birds!") app = webapp2.WSGIApplication( [ (r'/articles/', HomePage) ], debug=True) The script sleeps for 140 seconds, enough to produce a timeout. On visiting /articles/ on the dev_server, I do not get an error. But the live environment gives me the custom error page. The Developer page says "Warning!: Make sure that the path to th