Hashtable env = new Hashtable();
  env.put("java.naming.factory.initial","weblogic.jndi.WLInitialContextFactory");
        env.put("java.naming.provider.url", "t3://localhost:7001");
        InitialContext context = new InitialContext(env);
         DataSource ds=(DataSource)context.lookup("cgDataSource");
         ds.getConnection();这是连接的代码