Hi everyone,



I am using Tomcat4 to develop a Web Application and I would like to use database connection pool to connection postgreSQL. But I meet a problem, I try to lookup a DataSource, I get a java.lang.ClassCastException , and I find that the lookup() method return null to me.


I don't know why, I have try I lot of method, but still get the same problem. I have follow the document JNDI Resources HOW-TO that provide by Tomcat, get problem. Then I try to use Poolman, just follow the User guide, get problem again. After that, I try to integrate with JBoss, get the same problem too. Finally, I use Tomcat3 integrate with JBoss, I can lookup the datasource. I don't know why, is it the bug of Tomcat4?


Here is the code I use in my javabean.

			

			Properties props = new Properties();
			

			

			props.put(Context.INITIAL_CONTEXT_FACTORY,
			

			"org.jnp.interfaces.NamingContextFactory");
			

			

			props.put(Context.PROVIDER_URL, "localhost:1099");
			

			

			InitialContext initCtx = new InitialContext(props);
			

			

			DataSource ds = (DataSource) initCtx.lookup("java:comp/env/jdbc/myDS");