<html:form action="/login.do" method="post">
            <table width="600" cellpadding="0" cellspacing="0">
                <tr>
                    <th><bean:message key="index.user_message"/></th>
                    <td><html:text property="user"/></td>
                </tr>
                <tr>
                    <th><bean:message key="index.password_message"/></th>
                    <td><html:password property="password"/></td>
                </tr>
            </table>
            <div><html:submit value="Submit"/> <html:reset/></div>
        </html:form>

<struts-config>

    <form-beans>
        <form-bean name="RegisterForm" type="com.register.form.RegisterForm"/>
    </form-beans>

  <action-mappings>

    <action path  = "/login" type="com.register.action.RegisterAction" name="RegisterForm" >
        <forward name="success" path="/welcome.jsp" />
        <forward name="failure" path="/index.jsp" />
    </action>
  </action-mappings>

  <message-resources parameter="resources.application"/>
</struts-config>

 package  com.register.action;
 import  com.register.form.RegisterForm;
 import  org.apache.struts.action.*;
 import  javax.servlet.http.*;
 import  javax.servlet.ServletException;

 public   class  RegisterAction  extends  Action {
     public  ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) {
        RegisterForm registerForm = (RegisterForm) form;
        String username = registerForm.getUser();
        String password = registerForm.getPassword();
         if (username != null  && password !=  null ) { 
             try  {
                Session session = HibernateUtils.createSession();
                Transaction transaction = session.beginTransaction();
                User user =  new  User();
                user.setUser(username);
                user.setPassword(password);
                session.save(user);
                transaction.commit();
                session.close();
            }  catch (HibernateException e) {
                e.printStackTrace();
            }
             return  mapping.findForward("success");
        }  else   return  mapping.findForward("failure");
    }
}

Session session = HibernateUtils.createSession();

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration
     PUBLIC  "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
   <session-factory>

        <property name="hibernate.dialect">net.sf.hibernate.dialect.MySQLDialect</property>
        <property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/web_service</property>
        <property name="connection.username">root</property>
        <property name="connection.password"> 123 </property>
        <property name="show_sql">true</property>

    <!-- hibernate recources -->
        <mapping resource="com/register/user/User.hbm.xml"/>
    </session-factory>

</hibernate-configuration>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping
     PUBLIC  "-//Hibernate/Hibernate Mapping DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
    < class  name="com.register.user.User" table="users">
        <id name="id" column="id">
            <generator  class ="net.sf.hibernate.id.IncrementGenerator"/>
        </id>

        <property name="user">
            <column name="user"/>
        </property>

        <property name="password">
            <column name="password"/>
        </property>
    </ class >
</hibernate-mapping>

 package  com.register.utils;
 import  net.sf.hibernate.*;
 import  net.sf.hibernate.cfg.*;
 public   class  HibernateUtils {
     private   static  SessionFactory sessionFactory;
     static  {
             try  {
                sessionFactory =  new  Configuration().configure().buildSessionFactory();
            }  catch  (HibernateException ex) {
                ex.printStackTrace();
            }
    }

     public   static  Session createSession()  throws  HibernateException {
             return  sessionFactory.openSession();
    }
}

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling  this  request.

exception

javax.servlet.ServletException
	org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java: 535 )
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java: 433 )
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java: 236 )
	org.apache.struts.action.ActionServlet.process(ActionServlet.java: 1196 )
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java: 432 )
	javax.servlet.http.HttpServlet.service(HttpServlet.java: 709 )
	javax.servlet.http.HttpServlet.service(HttpServlet.java: 802 )

root cause

java.lang.NullPointerException
	com.register.utils.HibernateUtils.createSession(HibernateUtils.java: 15 )
	com.register.action.RegisterAction.execute(RegisterAction.java: 18 )
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java: 431 )
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java: 236 )
	org.apache.struts.action.ActionServlet.process(ActionServlet.java: 1196 )
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java: 432 )
	javax.servlet.http.HttpServlet.service(HttpServlet.java: 709 )
	javax.servlet.http.HttpServlet.service(HttpServlet.java: 802 )

note The full stack trace of the root cause is available in the Apache Tomcat/ 5 . 0 . 27  logs.

Connected to server
net.sf.hibernate.HibernateException: /hibernate.cfg.xml not found
	at net.sf.hibernate.cfg.Configuration.getConfigurationInputStream(Configuration.java: 886 )
	at net.sf.hibernate.cfg.Configuration.configure(Configuration.java: 910 )
	at net.sf.hibernate.cfg.Configuration.configure(Configuration.java: 897 )
	at com.register.utils.HibernateUtils.<clinit>(HibernateUtils.java: 8 )
	at com.register.action.RegisterAction.execute(RegisterAction.java: 18 )
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java: 431 )
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java: 236 )
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java: 1196 )
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java: 432 )
	at javax.servlet.http.HttpServlet.service(HttpServlet.java: 709 )
	at javax.servlet.http.HttpServlet.service(HttpServlet.java: 802 )
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 237 )
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java: 157 )
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 214 )
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java: 104 )
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 520 )
	at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java: 198 )
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 152 )
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java: 104 )
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 520 )
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java: 137 )
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java: 104 )
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 117 )
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java: 102 )
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 520 )
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 109 )
	at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java: 104 )
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java: 520 )
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java: 929 )
	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java: 160 )
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java: 799 )
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java: 705 )
	at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java: 577 )
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java: 683 )
	at java.lang.Thread.run(Thread.java: 534 )

net.sf.hibernate.HibernateException: /hibernate.cfg.xml not found

net.sf.hibernate.HibernateException: /hibernate.cfg.xml not found

     static 
    {
        try  {
          String configFileName = "src/hibernate.cfg.xml";
           if  (configFileName ==  null ) {
             sessionFactory =  new  Configuration().configure().buildSessionFactory();
          }
           else  {
             sessionFactory =  new  Configuration().configure( new  File(configFileName)).buildSessionFactory();
          }
       }  catch  (HibernateException ex) {
           throw   new  RuntimeException("Exception building SessionFactory: " + ex.getMessage(), ex);
       }
    }

<?xml version='1.0' encoding='utf-8'?>