Hibernate：保存時にjava.lang.ClassCastExceptionが発生しました

Question

今日、HIBERNATEで奇妙な問題が発生しました。データベースにオブジェクトを保存しようとすると、java.lang.ClassCastExceptionが表示されます。ここで

は、エラーのスタックトレースです：

15:57:24,307 DEBUG AnnotationTransactionAttributeSource:106 - Adding transactional method 'createNombreConnexion' with attribute: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; '' 
15:57:24,307 DEBUG AnnotationTransactionAttributeSource:106 - Adding transactional method 'save' with attribute: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; '' 
15:57:24,682 ERROR stderr:71 - java.lang.ClassCastException: java.lang.Long cannot be cast to ma.dataprotect.sensipro.model.NombreConnexion 

15:57:24,687 ERROR stderr:71 - at ma.dataprotect.sensipro.dao.impl.NombreConnexionDaoImpl.save(NombreConnexionDaoImpl.java:30) 

15:57:24,687 ERROR stderr:71 - at ma.dataprotect.sensipro.dao.impl.NombreConnexionDaoImpl.save(NombreConnexionDaoImpl.java:1) 

15:57:24,687 ERROR stderr:71 - at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 

15:57:24,687 ERROR stderr:71 - at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 

15:57:24,692 ERROR stderr:71 - at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 

15:57:24,692 ERROR stderr:71 - at java.lang.reflect.Method.invoke(Method.java:498) 

15:57:24,692 ERROR stderr:71 - at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) 

15:57:24,692 ERROR stderr:71 - at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) 

15:57:24,697 ERROR stderr:71 - at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) 

15:57:24,697 ERROR stderr:71 - at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) 

15:57:24,697 ERROR stderr:71 - at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 

15:57:24,697 ERROR stderr:71 - at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 

15:57:24,702 ERROR stderr:71 - at com.sun.proxy.$Proxy407.save(Unknown Source) 

15:57:24,702 ERROR stderr:71 - at ma.dataprotect.sensipro.services.impl.NombreConnexionServiceImpl.createNombreConnexion(NombreConnexionServiceImpl.java:28) 

15:57:24,702 ERROR stderr:71 - at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 

15:57:24,702 ERROR stderr:71 - at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 

15:57:24,707 ERROR stderr:71 - at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 

15:57:24,707 ERROR stderr:71 - at java.lang.reflect.Method.invoke(Method.java:498) 

15:57:24,707 ERROR stderr:71 - at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) 

15:57:24,707 ERROR stderr:71 - at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) 

15:57:24,712 ERROR stderr:71 - at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) 

15:57:24,712 ERROR stderr:71 - at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) 

15:57:24,712 ERROR stderr:71 - at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 

15:57:24,712 ERROR stderr:71 - at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 

15:57:24,712 ERROR stderr:71 - at com.sun.proxy.$Proxy410.createNombreConnexion(Unknown Source) 

15:57:24,712 ERROR stderr:71 - at ma.dataprotect.sensipro.util.LoginBean.login(LoginBean.java:85) 

15:57:24,712 ERROR stderr:71 - at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 

15:57:24,712 ERROR stderr:71 - at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 

15:57:24,717 ERROR stderr:71 - at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 

15:57:24,717 ERROR stderr:71 - at java.lang.reflect.Method.invoke(Method.java:498) 

15:57:24,717 ERROR stderr:71 - at com.sun.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:181) 

15:57:24,717 ERROR stderr:71 - at com.sun.el.parser.AstValue.invoke(AstValue.java:289) 

15:57:24,717 ERROR stderr:71 - at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304) 

15:57:24,717 ERROR stderr:71 - at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40) 

15:57:24,717 ERROR stderr:71 - at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) 

15:57:24,722 ERROR stderr:71 - at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40) 

15:57:24,722 ERROR stderr:71 - at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) 

15:57:24,722 ERROR stderr:71 - at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 

15:57:24,722 ERROR stderr:71 - at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) 

15:57:24,722 ERROR stderr:71 - at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 

15:57:24,722 ERROR stderr:71 - at javax.faces.component.UICommand.broadcast(UICommand.java:315) 

15:57:24,722 ERROR stderr:71 - at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 

15:57:24,722 ERROR stderr:71 - at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 

15:57:24,722 ERROR stderr:71 - at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 

15:57:24,727 ERROR stderr:71 - at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 

15:57:24,727 ERROR stderr:71 - at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) 

15:57:24,727 ERROR stderr:71 - at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658) 

15:57:24,727 ERROR stderr:71 - at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) 

15:57:24,727 ERROR stderr:71 - at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129) 

15:57:24,727 ERROR stderr:71 - at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:78) 

15:57:24,727 ERROR stderr:71 - at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) 

15:57:24,727 ERROR stderr:71 - at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 

15:57:24,732 ERROR stderr:71 - at ma.dataprotect.sensipro.util.FiltreUTF8.doFilter(FiltreUTF8.java:48) 

15:57:24,732 ERROR stderr:71 - at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) 

15:57:24,732 ERROR stderr:71 - at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 

15:57:24,732 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 

15:57:24,732 ERROR stderr:71 - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) 

15:57:24,732 ERROR stderr:71 - at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) 

15:57:24,732 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:139) 

15:57:24,737 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) 

15:57:24,742 ERROR stderr:71 - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,742 ERROR stderr:71 - at org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:144) 

15:57:24,747 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 

15:57:24,747 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 

15:57:24,747 ERROR stderr:71 - at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 

15:57:24,747 ERROR stderr:71 - at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 

15:57:24,747 ERROR stderr:71 - at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 

15:57:24,747 ERROR stderr:71 - at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) 

15:57:24,747 ERROR stderr:71 - at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) 

15:57:24,747 ERROR stderr:71 - at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) 

15:57:24,747 ERROR stderr:71 - at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 

15:57:24,747 ERROR stderr:71 - at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) 

15:57:24,752 ERROR stderr:71 - at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 

15:57:24,752 ERROR stderr:71 - at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) 

15:57:24,752 ERROR stderr:71 - at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) 

15:57:24,752 ERROR stderr:71 - at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) 

15:57:24,752 ERROR stderr:71 - at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) 

15:57:24,752 ERROR stderr:71 - at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 

15:57:24,752 ERROR stderr:71 - at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) 

15:57:24,752 ERROR stderr:71 - at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 

15:57:24,752 ERROR stderr:71 - at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) 

15:57:24,752 ERROR stderr:71 - at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174) 

15:57:24,752 ERROR stderr:71 - at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202) 

15:57:24,757 ERROR stderr:71 - at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793) 

15:57:24,757 ERROR stderr:71 - at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 

15:57:24,757 ERROR stderr:71 - at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 

15:57:24,757 ERROR stderr:71 - at java.lang.Thread.run(Thread.java:745) 

これが問題と実体である：

@SuppressWarnings("unchecked") 
    public T save(T t) { 
     return (T) getSessionFactory().getCurrentSession().save(t); 
    } 

コード：

package ma.dataprotect.sensipro.model; 

import static javax.persistence.GenerationType.IDENTITY; 

import java.util.Date; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.Id; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.Table; 
import javax.persistence.Temporal; 
import javax.persistence.TemporalType; 

@SuppressWarnings("serial") 
@Entity 
@Table(name = "nombre_connexion") 
public class NombreConnexion implements java.io.Serializable{ 

    private Long id; 
    private Organism organism; 
    private Date dateConnexion; 
    private Long nombreConn; 

    public NombreConnexion() { 
     super(); 
     // TODO Auto-generated constructor stub 
    } 

    public NombreConnexion(Organism organism, Date dateConnexion, 
      Long nombreConnexion) { 
     super(); 
     this.organism = organism; 
     this.dateConnexion = dateConnexion; 
     this.nombreConn= nombreConnexion; 
    } 

    @Id 
    @GeneratedValue(strategy = IDENTITY) 
    @Column(name = "id", unique = true, nullable = false) 
    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    @ManyToOne(fetch = FetchType.EAGER) 
    @JoinColumn(name = "id_organism", nullable = false) 
    public Organism getOrganism() { 
     return organism; 
    } 

    public void setOrganism(Organism organism) { 
     this.organism = organism; 
    } 

    @Temporal(TemporalType.DATE) 
    @Column(name = "date_connexion", unique=true, nullable = false) 
    public Date getDateConnexion() { 
     return dateConnexion; 
    } 

    public void setDateConnexion(Date dateConnexion) { 
     this.dateConnexion = dateConnexion; 
    } 

    @Column(name = "nombre_connexion", nullable = false) 
    public Long getNombreConn() { 
     return nombreConn; 
    } 

    public void setNombreConn(Long nombreConn) { 
     this.nombreConn = nombreConn; 
    } 
} 

ジェネリックメソッドを保存します問題が発生します：

nombreConnexion = new NombreConnexion(); 
             nombreConnexion.setOrganism(user.getOrganism()); 
nombreConnexion.setDateConnexion(new Date()); 
nombreConnexion.setNombreConn((long) 1); 
System.out.println(nombreConnexion); 
             nombreConnexionService.createNombreConnexion(nombreConnexion); 

EDITED：nombreConnexionServiceImpl.createNombreConnexion（nombreConnexion）のコード[重要ナッシング！]

public void createNombreConnexion(NombreConnexion nombreConnexion) { 

    nombreConnexionDao.save(nombreConnexion); 

} 

EDITED 2（私はこれが役立つことを願っています）：私は今、整数にIDの種類を変更エラーは次のとおりです。

16:30:46,818 ERROR stderr:71 - java.lang.ClassCastException: java.lang.Integer cannot be cast to ma.dataprotect.sensipro.model.NombreConnexion 

私たちは春と休止状態を使用していますが、すべて問題なく動作していました。

Answer 1

Hibernateセッションのsave（）メソッドによって返されるSerializableオブジェクトは、オブジェクト自体ではなく、オブジェクトのID（「生成された識別子」）です。だから、セーブメソッドの（T）へのキャストは失敗します。戻り値の型を変更するか、保存されたオブジェクトを代わりに返します。