File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes GWT and the fly likes Google App engine Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Frameworks » GWT
Bookmark "Google App engine" Watch "Google App engine" New topic

Google App engine

Pawan Komaram
Ranch Hand

Joined: Dec 08, 2009
Posts: 91

I have developed an application in google app engine, in which I have a file upload option, I am able to upload files and can view them afterwards. But when I move it to real environment (into google appengine) the file upload is not working. it is showing the following error with HTTP 500 error.

Error: Server Error

The server encountered an error and could not complete your request.
If the problem persists, please report your problem and mention this error message and the query that caused it.

Pawan Komaram
Ranch Hand

Joined: Dec 08, 2009
Posts: 91
It is resolved!!!

This was caused, because I was creating Text object with NULL string value, I have converted my file content into a string, if there is no file uploaded for any of the file upload field this string is coming as a NULL, when I am persisting object with Text object has NULL value, then app engine was trying to throw an exption.

I agree. Here's the link:
subject: Google App engine
It's not a secret anymore!