Command Window Database Access via a DataSource

Question

Hi.
I've succeeded in accessing a MySQL database via a DataSource from a servlet that makes use of a DAO. However, I would now like to use the same DAO to access the database from a standalone, command window program.
The error that I am getting is "javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial". This error is generated by the second of the following two lines in the DAO:
Context initialContext = new InitialContext();
Context context = (Context)initialContext.lookup("java:comp/env");
Is there any way in which I can get a standalone program to make use of my server.xml and web.xml DataSource mappings to access the database??
Any help would be most appreciated.
Thanks in anticipation.
Jan

Answer 1

The error that I am getting is
"javax.naming.NoInitialContextException: Need to
specify class name in environment or system property,
or as an applet parameter, or in an application
resource file: java.naming.factory.initial". This
error is generated by the second of the following two
lines in the DAO:
Context initialContext = new InitialContext();
Context context =
(Context)initialContext.lookup("java:comp/env");
The error itself suggests some solution to you. You need to specify the environment variables in the parameter to the InitialContext constructor. something like this...
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
env.put(Context.PROVIDER_URL, "t3://localhost:7001");
Context context = new InitialContext(env);Cheers!
***Annie***