Problem running simple servlet with Hibernate. Please help!

kodlan · **Posted:** Thu Jul 26, 2007 3:34 am

Hi!
I'm trying to write simplest servlet with hibernate. But I can't execute it.
I receive java.lang.NoClassDefFoundError: org/hibernate/cfg/Configuration
I think i have problem with my hibernate.cfg.xml.

My tomcat folder looks like this:
+ web-inf
web.xml

+ classes
+ hibernate - package
Servlet.class
Client.class
hibernate.cfg.xml
Client.hbm.xml

hibernate3.jar and other jars are in the /lib folder so I think it's not the point. Please help!!!!

Source:

Code:

package hibernate;


import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;


import org.hibernate.*;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;


public class Servlet extends HttpServlet {
        private static final String CONTENT_TYPE = "text/html; charset=windows-1251";

      //Initialize global variables
        public void init() throws ServletException {
        }


        public void store(Client c, PrintWriter pr){

                 // configutating Hibernate
                SessionFactory sf = null;
                Configuration cfg = new Configuration().configure();
                pr.println("<br>Hibernate configurated...");

                try {
                        sf = cfg.buildSessionFactory();//new Configuration().configure().buildSessionFactory();
                        pr.println("<br>SessionFactory received...");
                } catch (HibernateException e) {
                        pr.println("<br><font color=red>Error</font>: SessionFactory creation failed " + e.getMessage() + "! ");
                }

                // Opening session
                Session session = sf.openSession();
                pr.println("<br>Session opened...");

                // Saving object
                Transaction t = session.beginTransaction();
                session.save( c );
                t.commit();
                pr.println("<br>Object saved...");

                // Closing session
                session.close();
                pr.println("<br>Session closed...");

        }


      //Process the HTTP Get request
        public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
                response.setContentType(CONTENT_TYPE);
                PrintWriter out = response.getWriter();
                out.println("<html>");
                out.println("<head><title>Servlet1</title></head>");
                out.println("<body>");
                out.println("<p>The servlet has received a GET. This is the reply.</p>");

                Client cl = new Client("Stas", "8-097-933-48-42", "Ukraine");
                out.println("<br>Trying to store client...<br><br>");
                store(cl, out);

                out.println("</body></html>");

      }


      //Clean up resources
        public void destroy() {
        }
}

Code:

<?xml version='1.0'?>
<!DOCTYPE hibernate-configuration>

<hibernate-configuration>

    <session-factory>

        <!-- Database connection settings -->
        <property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost/hibernate</property>
        <property name="connection.username">root</property>
        <property name="connection.password"></property>

        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>


        <mapping resource="Client.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

[/code]

amila733 · **Posted:** Thu Jul 26, 2007 6:51 am

Hi

change your code and test this.

public void store(Client c, PrintWriter pr){

// configutating Hibernate
SessionFactory sf = null;
Configuration cfg = new Configuration();
confg.setProperty("hibernate.connection.driver_class","org.gjt.mm.mysql.Driver");
confg.setProperty("hibernate.connection.url","jdbc:mysql://localhost/hibernate");
confg.setProperty("hibernate.connection.username","root");
confg.setProperty("hibernate.connection.password","" );
confg.setProperty("hibernate.dialect","org.hibernate.dialect.MySQLDialect");
confg.setProperty("hibernate.connection.pool_size","10");
confg.setProperty("hibernate.cache.provider_class","org.hibernate.cache.NoCacheProvider");
confg.setProperty("hibernate.current_session_context_class","thread");
confg.setProperty("hibernate.jdbc.use_scrollable_resultset","true");
confg.setProperty("hibernate.show_sql","true");
pr.println(" Hibernate configurated...");

try {
sf = cfg.buildSessionFactory();//new Configuration().configure().buildSessionFactory();
pr.println(" SessionFactory received...");
} catch (HibernateException e) {
pr.println(" Error: SessionFactory creation failed " + e.getMessage() + "! ");
}

// Opening session
Session session = sf.openSession();
pr.println(" Session opened...");

// Saving object
Transaction t = session.beginTransaction();
session.save( c );
t.commit();
pr.println(" Object saved...");

// Closing session
session.close();
pr.println(" Session closed...");

}

changed
added

Amila

(Don't forget to rate if helps)

kodlan · **Posted:** Thu Jul 26, 2007 7:26 am

amila733 wrote:

Hi
change your code and test this.

I was running everything in JBuilder (well the only Internet access I currently have is thru GPRS, and I'll download j2ee later, thats why I've used jbuilder). After I've moved everything into Tomcat my original code returned org.hibernate.MappingException. I've changed it as you've said and it passed configuration. When commenting everething below configuration - it's ok. I receive folowing exceptions if I leave the rest of the code.

PS: Which driver is correct for MySQL com.mysql.jdbc.Driver or org.gjt.mm.mysql.Driver?

[code]javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1011)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
at java.lang.Thread.run(Thread.java:534)

root cause
java.lang.NoClassDefFoundError: org/aspectj/lang/Signature
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:57)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at hibernate.Servlet.store(Servlet.java:47)
at hibernate.Servlet.doGet(Servlet.java:81)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1011)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
at java.lang.Thread.run(Thread.java:534)[code]

Quote:

(Don't forget to rate if helps)

Okay!

kodlan · **Posted:** Thu Jul 26, 2007 7:30 am

PS: tomcat wrote in console :

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.

amila733 · **Posted:** Thu Jul 26, 2007 7:58 am

Hi

use this mysql-connector-java-3.1.10-bin.jar

Amila
(Dont' forget to rate if helps)

kodlan · **Posted:** Thu Jul 26, 2007 8:04 am

amila733 wrote:

Hi

use this mysql-connector-java-3.1.10-bin.jar

well, I'm using mysql-connector-java-5.0.7-bin.jar.
I've asked about the name which should be used in hibernate.cfg.xml.

Any thoughts why do I receive org.hibernate.MappingException exception?

kodlan · **Posted:** Fri Jul 27, 2007 12:30 pm

The problem was the wrong hibernate.cfg.xml and Client.hbm.xml.
Everything is ok now.