Java.lang.NullPointerException

public class ClienteAction extends DispatchAction {
	
	
	public ActionForward home(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {	
		
		return mapping.findForward("ok");
	}
	
	
	
	public ActionForward gravaContato(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {

		ClienteForm formulario = (ClienteForm) form;
		Cliente cliente = formulario.getCliente();
		
		ClienteDao.save(cliente);

		return mapping.findForward("ok");
	}

public class ClienteDao {

	public static void save(Cliente cliente) throws Exception{
		
		HibernateUtil.beginTransaction();
		HibernateUtil.getSession().save(cliente);
		HibernateUtil.commitTransaction();
		
	}

}

public class ClienteForm extends ActionForm {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
	private Cliente cliente = new Cliente();
	

	public Cliente getCliente() {
		return cliente;
	}

	public void setCliente(Cliente cliente) {
		this.cliente = cliente;
	}

}

package vc.sooamorconsegue.model;

import java.util.Date;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;

@Entity
public class Cliente {
	
	@Id
	@GeneratedValue
	private int id;
	private String nome;
	private String email;
	private Date dataDeNascimento;
	
	
	
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getNome() {
		return nome;
	}
	public void setNome(String nome) {
		this.nome = nome;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public Date getDataDeNascimento() {
		return dataDeNascimento;
	}
	public void setDataDeNascimento(Date dataDeNascimento) {
		this.dataDeNascimento = dataDeNascimento;
	}
	
	

}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd">

<struts-config>

	<form-beans>
		<form-bean name="clienteForm" type="vc.sooamorconsegue.ClienteForm"></form-bean>
	</form-beans>	

	<action-mappings>

		<action 
			path="/cliente" 
			name="clienteForm"
			type="vc.sooamorconsegue.action.ClienteAction" 
			parameter="method"
			scope="request">
			<forward name="ok" path="/index.jsp"></forward>			
		</action>
		
		<action 
			path="/sooamorconsegue"
			type="vc.sooamorconsegue.action.ClienteAction"
			scope="request">
			<forward name="ok" path="/index.jsp"></forward>			
		</action>

	</action-mappings>

</struts-config>

<form id="cadastra" name="cliente" action="/sooamorconsegue/cliente.do?method=gravaContato" method="post" enctype="multipart/form-data" >
			
				<table>
					<tr>
						<td>Nome:</td>
						<td>
							<input type="text" name="cliente.nome" value="${clienteForm.cliente.nome}">
						</td>
						<td>Data de Nascimento:</td>
						<td>
							<input type="text" name="cliente.dataDeNascimento" value="${clienteForm.cliente.dataDeNascimento}">
						</td>
						<td>E-mail:</td>
						<td>
							<input type="text" name="cliente.email" value="${clienteForm.cliente.email}">
						</td>
						<td>
							<input type="submit" value="Enviar Dados">
						</td>
					</tr>
				</table>
			
			</form>

AVISO: Exception from exceptionCommand 'servlet-exception'
java.lang.NullPointerException
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
	at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:357)
	at org.apache.struts.chain.commands.CreateActionForm.execute(CreateActionForm.java:92)
	at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
	at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at vc.sooamorconsegue.filter.HibernateFilter.doFilter(HibernateFilter.java:39)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)