JDBC Driver does not work with GWT?

Question

I want to access to an external MySQL server from my server using GWT, I added the mysql-connector jar to the build path and in war/WEB-INF/lib

Although I get this exception:

java.lang.NoClassDefFoundError: com.mysql.jdbc.Driver is a restricted class. Please see the Google App Engine developer's guide for more details.

Any ideas? Would jdbc driver be on a black-list?

You can only make rpc calls their server endpoints from gwt. You can't interact with the server's resources directly from gwt. Is this error occurring on the server, or on the client? What is the path of the class that the error is occurring in? — antony.trupe

dagge dagge · Accepted Answer · 2010-11-18T01:48:05

App Engine doesn't support JDBC. Maybe your project is set to target App Engine. If you're using Eclipse, right click the project, choose properties, and under "Google>App Engine" deselect "Use Google App Engine".

JDBC Driver does not work with GWT?

2 Answers