Need help with Hibernate? Read this first:
http://www.hibernate.org/ForumMailingli ... AskForHelp

Hello,
I got the following message when call a servlet using Tomcat container. Would somebody give me a help to find where is wrong
and how to fix it. Thanks in advance. ---FH


Hibernate version:3.1.3



Full stack trace of any exception that occurs:
exception
javax.servlet.ServletException: Error instantiating servlet class javamxj.hibernate.Hb2test
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
root cause
java.lang.NoClassDefFoundError: org/hibernate/Session
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
java.lang.Class.getConstructor0(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)



Name and version of the database you are using:MySQL



My servlet Hb2test.java at web/inf/src:

package javatest.hibernate;

import org.hibernate.*;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class Hb2test extends HttpServlet {

public void init() throws ServletException {

}

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {


try {
SessionFactory sf = new Configuration().configure().buildSessionFactory();
Session session = sf.openSession(); session.beginTransaction();
User user = new User();
user.setUsername("Blog");
user.setPassword("test");
session.save(user);
session.getTransaction().commit();
session.close();

} catch (Exception e) {
e.printStackTrace();
}

}
}

web.xml at web-inf:

<servlet>
<servlet-name>Hb2test</servlet-name>
<servlet-class>javatest.hibernate.Hb2test</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Hb2test</servlet-name>
<url-pattern>/hb2test</url-pattern>
</servlet-mapping>