プロキシを初期化できませんでした - セッションはありませんか？

Question

は私がhibernate、springframework、およびglassfishで、Javaのウェブでプロジェクトをやっています。

、それが次のエラー表示されて落下するプロジェクトの実行：それは動作しなくなった場合は

Glassfishの

Grave: could not initialize proxy - no Session 
org.hibernate.LazyInitializationException: could not initialize proxy - no Session 
    at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:57) 
    at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111) 
    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150) 
    at com.pojos.Aplicacion$$EnhancerByCGLIB$$abe88be6.getVersionApp(<generated>) 
    at com.beans.LoginSdiBean.logear(LoginSdiBean.java:98) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at com.sun.el.parser.AstValue.invoke(AstValue.java:289) 
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571) 
    at java.lang.Thread.run(Thread.java:745) 

Grave: org.hibernate.LazyInitializationException: could not initialize proxy - no Session 
    at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:57) 
    at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111) 
    at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150) 
    at com.pojos.Aplicacion$$EnhancerByCGLIB$$abe88be6.getVersionApp(<generated>) 
    at com.beans.LoginSdiBean.logear(LoginSdiBean.java:98) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at com.sun.el.parser.AstValue.invoke(AstValue.java:289) 
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87) 
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:315) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658) 
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206) 
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180) 
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132) 
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111) 
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536) 
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591) 
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571) 
    at java.lang.Thread.run(Thread.java:745) 

休止

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> 

<hibernate-configuration> 
    <session-factory> 
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.url">jdbc:mysql://star.elrio.cl:3306/star?zeroDateTimeBehavior=convertToNull</property> 
    <property name="hibernate.connection.username">usuario</property> 
    <property name="hibernate.connection.password">clave</property> 
    <mapping resource="com/DatosOcOriginal.hbm.xml"/> 
    <mapping resource="com/Usuario.hbm.xml"/> 
    <mapping resource="com/EstadosOc.hbm.xml"/> 
    <mapping resource="com/ProyectoCompras.hbm.xml"/> 
    <mapping resource="com/Agendamiento.hbm.xml"/> 
    <mapping resource="com/Solicitud.hbm.xml"/> 
    <mapping resource="com/UsuarioAplicacion.hbm.xml"/> 
    <mapping resource="com/Aplicacion.hbm.xml"/> 
    <mapping resource="com/AplicacionVersion.hbm.xml"/> 
    <mapping resource="com/Propiedad.hbm.xml"/> 
    <mapping resource="com/Proyecto.hbm.xml"/> 
    <mapping resource="com/DatosCorreo.hbm.xml"/> 
    <mapping resource="com/ProyectoTi.hbm.xml"/> 
    <mapping resource="com/EventoUsuario.hbm.xml"/> 
    <mapping resource="com/Componente.hbm.xml"/> 
    <mapping resource="com/Permiso.hbm.xml"/> 
    <mapping resource="com/NotaProyecto.hbm.xml"/> 
    <mapping resource="com/ArchivosCargados.hbm.xml"/> 
    <mapping resource="com/DatosOc.hbm.xml"/> 
    <mapping resource="com/Email.hbm.xml"/> 
    <mapping resource="com/Evento.hbm.xml"/> 
    </session-factory> 
</hibernate-configuration> 

を

Map<String, UsuarioAplicacion> aplicaciones = usuario.getAplicaciones(); 
         System.out.println("aplicacion key"+ aplicaciones.keySet()); 
         Set<String> keySet = aplicaciones.keySet(); 
         DefaultMenuItem item = null; 
         UsuarioAplicacion ua = null; 
         for (String key : keySet) { 
          ua = (UsuarioAplicacion) aplicaciones.get(key); 
      HERE FALLS  item = new DefaultMenuItem(ua.getAplicacion().getNombre()); 
          item.setUrl(ua.getAplicacion().getUrl()); 
          item.setTitle(ua.getAplicacion().getDescripcion()); 
          item.setIcon("../resources/images/" + ua.getAplicacion().getIcono()); 

          menuAplicaciones.addElement(item); 
         } 

アプリケーション

public class Aplicacion implements java.io.Serializable { 

    private String codAplicacion; 
    private String nombre; 
    private String lenguaje; 
    private String autor; 
    private Date fechaImplementacion; 
    private String descripcion; 
    private String versionApp; 
    private String url; 
    private String icono; 
    private Set componentes = new HashSet(0); 
    private Set usuarioAplicacions = new HashSet(0); 
    private Set propiedads = new HashSet(0); 

    private boolean asignada; 

    public static final String APLICACION_SDI = "SDI"; 

    public static final String MSJ_EXITO_ASIGNAR = "Asignación de aplicación actualizada correctamente"; 

    public Aplicacion() { 
    } 


    public Aplicacion(String codAplicacion, String nombre, String autor, Date fechaImplementacion, String descripcion, String versionApp) { 
     this.codAplicacion = codAplicacion; 
     this.nombre = nombre; 
     this.autor = autor; 
     this.fechaImplementacion = fechaImplementacion; 
     this.descripcion = descripcion; 
     this.versionApp = versionApp; 
    } 
    public Aplicacion(String codAplicacion, String nombre, String lenguaje, String autor, Date fechaImplementacion, String descripcion, String versionApp, Set componentes, Set usuarioAplicacions, Set propiedads) { 
     this.codAplicacion = codAplicacion; 
     this.nombre = nombre; 
     this.lenguaje = lenguaje; 
     this.autor = autor; 
     this.fechaImplementacion = fechaImplementacion; 
     this.descripcion = descripcion; 
     this.versionApp = versionApp; 
     this.componentes = componentes; 
     this.usuarioAplicacions = usuarioAplicacions; 
     this.propiedads = propiedads; 
    } 

    @Override 
    public int hashCode() { 
     int hash = 3; 
     hash = 17 * hash + (this.codAplicacion != null ? this.codAplicacion.hashCode() : 0); 
     return hash; 
    } 

    @Override 
    public boolean equals(Object obj) { 
     if (obj == null) { 
      return false; 
     } 
     if (getClass() != obj.getClass()) { 
      return false; 
     } 
     final Aplicacion other = (Aplicacion) obj; 
     if ((this.codAplicacion == null) ? (other.codAplicacion != null) : !this.codAplicacion.equals(other.codAplicacion)) { 
      return false; 
     } 
     return true; 
    } 


    public String getCodAplicacion() { 
     return this.codAplicacion; 
    } 

    public void setCodAplicacion(String codAplicacion) { 
     this.codAplicacion = codAplicacion; 
    } 
    public String getNombre() { 
     return this.nombre; 
    } 

    public void setNombre(String nombre) { 
     this.nombre = nombre; 
    } 
    public String getLenguaje() { 
     return this.lenguaje; 
    } 

    public void setLenguaje(String lenguaje) { 
     this.lenguaje = lenguaje; 
    } 
    public String getAutor() { 
     return this.autor; 
    } 

    public void setAutor(String autor) { 
     this.autor = autor; 
    } 
    public Date getFechaImplementacion() { 
     return this.fechaImplementacion; 
    } 

    public void setFechaImplementacion(Date fechaImplementacion) { 
     this.fechaImplementacion = fechaImplementacion; 
    } 
    public String getDescripcion() { 
     return this.descripcion; 
    } 

    public void setDescripcion(String descripcion) { 
     this.descripcion = descripcion; 
    } 
    public String getVersionApp() { 
     return this.versionApp; 
    } 

    public void setVersionApp(String versionApp) { 
     this.versionApp = versionApp; 
    } 
    public Set getComponentes() { 
     return this.componentes; 
    } 

    public void setComponentes(Set componentes) { 
     this.componentes = componentes; 
    } 
    public Set getUsuarioAplicacions() { 
     return this.usuarioAplicacions; 
    } 

    public void setUsuarioAplicacions(Set usuarioAplicacions) { 
     this.usuarioAplicacions = usuarioAplicacions; 
    } 
    public Set getPropiedads() { 
     return this.propiedads; 
    } 

    public void setPropiedads(Set propiedads) { 
     this.propiedads = propiedads; 
    } 

    public String getUrl() { 
     return url; 
    } 

    public void setUrl(String url) { 
     this.url = url; 
    } 

    public String getIcono() { 
     return icono; 
    } 

    public void setIcono(String icono) { 
     this.icono = icono; 
    } 

    public boolean isAsignada() { 
     return asignada; 
    } 

    public void setAsignada(boolean asignada) { 
     this.asignada = asignada; 
    } 




} 

私は数日間、これできたと私はいくつかの同様の質問を見てきましたが、答えは動作しません。 UsuarioAplicacion内部

Answer 1

Aplicacionは遅延ロードです。どのバージョンのハイバネートを使用していますか？コードの下に試してみてください。Hibernateは4.2以来

Hibernate.initialize(ua.getAplicacion()); 

、あなたはまた、プロパティの下

<property name="hibernate.enable_lazy_load_no_trans">true</property> 

Answer 2

を設定することができますあなたはUsuario.hbm.xmlのコンテンツを投稿しませんでしたが、私は、ユーザーとアプリケーションの間の関係はXxxToMany（ワンユーザーが関連あると思います多くのアプリ）。 ToMany関係のデフォルトフェッチタイプでは、ユーザー、自分のアプリケーションの本当のコレクションがロードされていないだけで、プロキシをロードする際に意味LAZYです。アプリケーションの名前にアクセスする必要がある場合、プロキシは実際のapplicationデータを読み込みます。あなたがそのnameにアクセスした場合残念ながら、あなたは@Transactionalコンテキストの外にあると何のセッションがありません。これは有名なLazyInitializationExceptionの原因となります。

これを解決するには、userをロードし、彼のすべてapplicationsを@Transactionalメソッドでフェッチする必要があります。この中で（

@Transactinal 
public User loadUserWithApps(long userId){ 
    User user = ... 
    user.getApplications().size(); // This line will do the trick, but it also creates N+1 problem 
} 

.size()は、アプリケーションのリストに、実際のデータをロードするためにJPAプロバイダの引き金となるでしょうが、それはまた、N + 1つの問題を作成します。JPA/Hibernateの中に私の初期の頃には

は、私はこのようなコードを使用しましたケースN == 1）。

あなたはこれを回避するためにjoin fetchまたはEntityGraphを使用することをお勧めします。