Java to Google Spreadsheet

Question

I was trying to do programming using Java to connect to Google Spreadsheet to do data retrieval or modifying data in the cells.

My Google spreadsheet link is https://doc

Answer 1

I was also getting the com.google.gdata.util.ParseException: Unrecognized content type:application/binary error, but I seem to have stumbled on a workaround for this strange bug. The code in Alex R's answer can be used as a starting point.

1. First I tried changing the visibility to "public", just to see what would happen. Since the document is not published, I got the expected error response, containing:

   We're sorry. This document is not published.

2. So I changed the visibility back to "private", and tried again just for fun...

   Lo, and behold; it worked!

It works with either the Drive or Spreadsheets Feed scope (both can be included if you prefer):

• https://www.googleapis.com/auth/drive
• https://spreadsheets.google.com/feeds

I'm not sure if its a factor, but I'm not using OAuth 2.0, but rather a Credential created from a PrivateKey (PKCS12 file), as in Brian Chapman's answer.

Conclusion

So, although it's kludgy, I've modified my application to always make a "public" request (wrapped in a try block to absorb the resulting Exception) just before making the "private" request. It's the only way I've been able to deterministically get the correct result.