сохранить временный экземпляр перед сбросом при отправке объекта с двумя объектами в качестве внешних ключей

Question

Сущность Demande имеет 2 сущности (User, TypeDemande) в качестве внешних ключей. Раскрывающийся список заполняется из базы данных (typedemande), а пользователь (подключенный) будет получен из сервисного уровня, также еще одна вещь, я думаю, что тип возвращаемого значения TypeDemande равен нулю, его нельзя извлечь из выпадающего списка, Как я могу получить значение (либо объект или ItemValue (идентификатор)). Я не хочу сохранять нового пользователя с TypeDemande, так как он уже существует в базе данных. Я пытался с каскадом не работает, я использую пружину mvc, спящий режим, oracle.

полная ошибка:

Apr 30, 2020 11:54:43 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [dispatcherServlet] in context with path [/JPAproject] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: object references an unsaved transient instance - save the transient instance before flushing: jpa.project.model.DemTypeDemande; nested exception is org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: jpa.project.model.DemTypeDemande] with root cause
org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: jpa.project.model.DemTypeDemande
	at org.hibernate.engine.internal.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:249)
	at org.hibernate.type.EntityType.getIdentifier(EntityType.java:486)
	at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:295)
	at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:305)
	at org.hibernate.type.TypeHelper.findDirty(TypeHelper.java:294)
	at org.hibernate.persister.entity.AbstractEntityPersister.findDirty(AbstractEntityPersister.java:4037)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:527)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.isUpdateNecessary(DefaultFlushEntityEventListener.java:234)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:163)
	at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:227)
	at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
	at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234)
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404)
	at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
	at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)
	at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:554)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:755)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:475)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:270)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy24.addDemande(Unknown Source)
	at jpa.project.controller.DemandeController.actionadduser(DemandeController.java:62)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
	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:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Apr 30, 2020 11:54:45 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [dispatcherServlet] in context with path [/JPAproject] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: object references an unsaved transient instance - save the transient instance before flushing: jpa.project.model.DemTypeDemande; nested exception is org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: jpa.project.model.DemTypeDemande] with root cause
org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: jpa.project.model.DemTypeDemande
	at org.hibernate.engine.internal.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:249)
	at org.hibernate.type.EntityType.getIdentifier(EntityType.java:486)
	at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:295)
	at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:305)
	at org.hibernate.type.TypeHelper.findDirty(TypeHelper.java:294)
	at org.hibernate.persister.entity.AbstractEntityPersister.findDirty(AbstractEntityPersister.java:4037)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:527)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.isUpdateNecessary(DefaultFlushEntityEventListener.java:234)
	at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:163)
	at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:227)
	at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
	at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234)
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404)
	at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
	at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)
	at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:554)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:755)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:475)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:270)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at com.sun.proxy.$Proxy24.addDemande(Unknown Source)
	at jpa.project.controller.DemandeController.actionadduser(DemandeController.java:62)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
	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:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

контроллер:

@Controller
public class DemandeController {
	@Autowired
ProjectService service ;
	
	@RequestMapping(value = "/demandes/manage",method = RequestMethod.GET)
	public String manageUsers(HttpServletRequest request,Model model) throws IOException {
/* ----set view
		ModelAndView model = new ModelAndView();		
		model.setViewName("managedemandes"); */
//----set users list
	    List<DemDemande> listDemandes = service.getDemandes();
		model.addAttribute("listDemandes", listDemandes);			
//----set types demande list
	   List<DemTypeDemande> listTypeDemandes = service.getTypeDemandes();
	   model.addAttribute("listTypeDemandes", listTypeDemandes); 				  
//----retrieve  user
	    String ConnectedUsername = service.getConnectedUsername(request);	   
	    DemUser currentUser = service.getUserByUsername(ConnectedUsername);
        model.addAttribute("demUser", currentUser); 
		   //retrieve type  demande
    //    DemTypeDemande typeDemande = service.getTypeDemande(Long.valueOf(request.getParameter("demTypeDemande")));
           model.addAttribute("demTypeDemande",new DemTypeDemande()); 	  

      //add demande object  
	  model.addAttribute("DemDemande", new DemDemande()); 

		return "managedemandes";
	}
	
	
	@RequestMapping(value = "/demandes/actionadddemande", method = RequestMethod.POST)
	public String actionadduser(ModelAndView model,HttpServletRequest request 
			,@ModelAttribute DemTypeDemande typeDemande,@ModelAttribute DemUser currentUser,
@ModelAttribute DemDemande demande,BindingResult result) {
       
demande.setDemUser(currentUser);  
demande.setDemTypeDemande(typeDemande);

        service.addDemande(demande);
		return "redirect:/demandes/manage";
	}
	
}

jsp:

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
   <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	    <div align="left">
This is manage Demandes
<table border="1">
        <h1>Demandes</h1>
			<tr><td> id demande </td> <td> Type demande :</td>  <td>  Nom demandeur :</td></tr>
			<c:forEach var="demande" items="${listDemandes}">
				<tr>
					<td>${demande.idDemande}</td>			
					<td>${demande.demTypeDemande.libTypeDemande}</td>								
					<td>${demande.demUser.nameUser}</td>			
				</tr>	
			</c:forEach>
		</table>
			    </div>
			    
			    ${demUser.nameUser }
			    ${demTypeDemande.libTypeDemande}
	    <div align="center">	    
        <h1>New user</h1>
        <form:form action="actionadddemande" method="POST" commandName="DemDemande">
        <table>
                    <form:hidden path="idDemande" />
                     <form:hidden path="demUser"  />          
     			<tr>
				<td>Types :</td>
				<td>
  <form:select path="demTypeDemande">
         <form:options items="${listTypeDemandes}"  itemValue="idTypeDemande" itemLabel="libTypeDemande"></form:options>
    </form:select></td>
</tr>
            <tr>
                <td colspan="2" align="center"><input type="submit" value="Save"></td>
            </tr>
        </table>
        </form:form>
        </div>

</body>
</html>

Объект Demande:

@Entity
@Table(name="DEM_DEMANDE")
@NamedQuery(name="DemDemande.findAll", query="SELECT d FROM DemDemande d")
public class DemDemande implements Serializable {
	private static final long serialVersionUID = 1L;

	@Id
	@SequenceGenerator(name="DEM_DEMANDE_IDDEMANDE_GENERATOR", sequenceName="SEQ_DEM_DEMANDE")
	@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="DEM_DEMANDE_IDDEMANDE_GENERATOR")
	@Column(name="ID_DEMANDE")
	private long idDemande;

	//uni-directional many-to-one association to DemTypeDemande
	@ManyToOne
	@JoinColumn(name="ID_TYPE_DEMANDE")
	private DemTypeDemande demTypeDemande;

	//uni-directional many-to-one association to DemUser
	@ManyToOne
	@JoinColumn(name="ID_DEM_USER")
	private DemUser demUser;

	public DemDemande() {
	}

//getters and setters

}

Тип запроса:

@Entity
@Table(name="DEM_TYPE_DEMANDE")
@NamedQuery(name="DemTypeDemande.findAll", query="SELECT d FROM DemTypeDemande d")
public class DemTypeDemande implements Serializable {
	private static final long serialVersionUID = 1L;
	private long idTypeDemande;
	private String libTypeDemande;
	private List<DemDemande> demDemandes;

	public DemTypeDemande() {
	}


	@Id
	@SequenceGenerator(name="DEM_TYPE_DEMANDE_IDTYPEDEMANDE_GENERATOR", sequenceName="SEQ_DEM_TYPE_DEMANDE")
	@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="DEM_TYPE_DEMANDE_IDTYPEDEMANDE_GENERATOR")
	@Column(name="ID_TYPE_DEMANDE")
	public long getIdTypeDemande() {
		return this.idTypeDemande;
	}

	public void setIdTypeDemande(long idTypeDemande) {
		this.idTypeDemande = idTypeDemande;
	}


	@Column(name="LIB_TYPE_DEMANDE")
	public String getLibTypeDemande() {
		return this.libTypeDemande;
	}

	public void setLibTypeDemande(String libTypeDemande) {
		this.libTypeDemande = libTypeDemande;
	}


	//bi-directional many-to-one association to DemDemande
	
	@OneToMany(mappedBy="demTypeDemande")
	public List<DemDemande> getDemDemandes() {
		return this.demDemandes;
	}

	public void setDemDemandes(List<DemDemande> demDemandes) {
		this.demDemandes = demDemandes;
	}

	public DemDemande addDemDemande(DemDemande demDemande) {
		getDemDemandes().add(demDemande);
		demDemande.setDemTypeDemande(this);

		return demDemande;
	}

	public DemDemande removeDemDemande(DemDemande demDemande) {
		getDemDemandes().remove(demDemande);
		demDemande.setDemTypeDemande(null);

		return demDemande;
	}

}

Пользователь:

@Id
	@SequenceGenerator(name="DEM_USER_IDUSER_GENERATOR", sequenceName="SEQ_DEM_USER")
	@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="DEM_USER_IDUSER_GENERATOR")
	@Column(name="ID_USER")
	private long idUser;


	//uni-directional many-to-one association to DemRole
	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name="ID_ROLE", nullable=false)
	private DemRole idRole;


	@Column(name="NAME_USER")
	private String nameUser;

	private String password;

	public DemUser() {
	}

//getters and setters
}

Реализация Demande dao:

	@Override
	public void addDemande(DemDemande demande) {
		sessionFactory.getCurrentSession().save(demande);	
	}