@EJB в @ViewScoped @ManagedBean вызывает java.io.NotSerializableException - PullRequest
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@EJB в @ViewScoped @ManagedBean вызывает java.io.NotSerializableException

8 голосов
/ 14 октября 2011

Я прочитал @ EJB в управляемом компоненте @ViewScoped, вызывает java.io.NotSerializableException , но моя настройка сохранения состояния: server.

Вот что у меня есть:

web.xml: 

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>sispra</display-name>
    <welcome-file-list>
        <welcome-file>index.jsf</welcome-file>
    </welcome-file-list>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>

    <filter>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
    </filter-mapping>

    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>server</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.BUILD_BEFORE_RESTORE</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>primefaces.THEME</param-name>
        <param-value>glass-x</param-value>
    </context-param>
    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Secure Application</web-resource-name>
            <url-pattern>/*</url-pattern>
            <http-method>GET</http-method>
            <http-method>POST</http-method>
        </web-resource-collection>
        <auth-constraint>
            <role-name>user</role-name>
        </auth-constraint>
    </security-constraint>
    <login-config>
        <auth-method>BASIC</auth-method>
        <realm-name>fileRealm</realm-name>
    </login-config>
    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
    <security-role>
        <role-name>user</role-name>
    </security-role>
</web-app>

customer.xhtml: 

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:p="http://primefaces.org/ui">      

    <h:head>
        <title>TODO supply a title</title>
    </h:head>

    <h:body>

        <p:growl id="messages"/>

        <h:form>

            <p:commandButton actionListener="#{customerController.create}" value="save" update="@form :messages"/>

            <p:panel>
                <f:facet name="header">
                    <h:outputText value="Details"/>
                </f:facet>

                <h:panelGrid columns="3">

                    <h:outputLabel for="name" value="#{bundle['person.name']}"/>
                    <p:inputText id="name" label="#{bundle['person.name']}" value="#{customerController.selected.name}"/>
                    <p:message for="name"/>

                    <h:outputLabel for="surname" value="#{bundle['person.surname']}"/>
                    <p:inputText id="surname" label="#{bundle['person.surname']}" value="#{customerController.selected.surname}"/>
                    <p:message for="surname"/>

                </h:panelGrid>
            </p:panel>

        </h:form>

    </h:body>
</html>

CustomerController.java: 

package it.shape.sispra.controllers;

import it.shape.sispra.ejb.PersonFacade;
import it.shape.sispra.entities.Customer;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class CustomerController extends AbstractController<Customer>
{
    private static final long serialVersionUID = 134755304347034L;

    @EJB
    private PersonFacade facade;

    public CustomerController()
    {
        super(Customer.class);
    }

    @Override
    public PersonFacade getFacade()
    {
        return facade;
    }
}

PersonFacade.java: 

package it.shape.sispra.ejb;

import it.shape.sispra.entities.Person;
import javax.ejb.Stateless;

@Stateless
public class PersonFacade extends AbstractFacade<Person>
{
    private static final long serialVersionUID = 4357823648345L;

    public PersonFacade()
    {
        super(Person.class);
    }

}

AbstractFacade.java: 

package it.shape.sispra.ejb;

import it.shape.sispra.entities.AbstractEntity;
import java.io.Serializable;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import org.eclipse.persistence.jpa.JpaHelper;
import org.eclipse.persistence.queries.QueryByExamplePolicy;
import org.eclipse.persistence.queries.ReadAllQuery;
import org.eclipse.persistence.queries.ReadObjectQuery;

public abstract class AbstractFacade<T extends AbstractEntity> implements Serializable
{
    private static final long serialVersionUID = 12467890452346123L;

    @PersistenceContext(unitName = "sispra")
    private EntityManager em;

    private final Class<T> entityClass;

    public AbstractFacade(Class<T> entityClass)
    {
        this.entityClass = entityClass;
    }

    public EntityManager getEntityManager()
    {
        return em;
    }

    public void create(T entity)
    {
        getEntityManager().persist(entity);
    }

    public void edit(T entity)
    {
        getEntityManager().merge(entity);
    }

    public void remove(T entity)
    {
        getEntityManager().remove(getEntityManager().merge(entity));
    }

    public void refresh(T entity)
    {
        getEntityManager().refresh(entity);
    }

    public T find(Object id)
    {
        return getEntityManager().find(entityClass, id);
    }

    public List<T> findAll()
    {
        CriteriaQuery<T> cq = getEntityManager().getCriteriaBuilder().createQuery(entityClass);
        cq.select(cq.from(entityClass));

        return getEntityManager().createQuery(cq).getResultList();
    }

    public List<T> findRange(int first, int max)
    {
        CriteriaQuery<T> cq = getEntityManager().getCriteriaBuilder().createQuery(entityClass);
        cq.select(cq.from(entityClass));

        TypedQuery<T> q = getEntityManager().createQuery(cq);
        q.setMaxResults(max);
        q.setFirstResult(first);

        return q.getResultList();
    }

    public int count()
    {
        CriteriaQuery<Long> cq = getEntityManager().getCriteriaBuilder().createQuery(Long.class);
        Root<T> rt = cq.from(entityClass);
        cq.select(getEntityManager().getCriteriaBuilder().count(rt));
        TypedQuery<Long> q = getEntityManager().createQuery(cq);
        return q.getSingleResult().intValue();
    }

    @SuppressWarnings("unchecked")
    public T findByExample(T entity)
    {
        // Create a native EclipseLink query using QBE policy
        QueryByExamplePolicy policy = new QueryByExamplePolicy();
        policy.addSpecialOperation(String.class, "like");

        ReadObjectQuery roq = new ReadObjectQuery(entity, policy);

        // Wrap the native query in a standard JPA Query and execute it
        Query query = JpaHelper.createQuery(roq, getEntityManager());

        return (T) query.getSingleResult();
    }

    @SuppressWarnings("unchecked")
    public List<T> findAllByExample(T entity)
    {
        // Create a native EclipseLink query using QBE policy
        QueryByExamplePolicy policy = new QueryByExamplePolicy();
        policy.addSpecialOperation(String.class, "like");

        ReadAllQuery raq = new ReadAllQuery(entity, policy);

        // Wrap the native query in a standard JPA Query and execute it
        Query query = JpaHelper.createQuery(raq, getEntityManager());

        return query.getResultList();
    }

    @SuppressWarnings("unchecked")
    public List<T> findByExample(T entity, int start, int max)
    {
        // Create a native EclipseLink query using QBE policy
        QueryByExamplePolicy policy = new QueryByExamplePolicy();
        policy.addSpecialOperation(String.class, "like");

        ReadAllQuery raq = new ReadAllQuery(entity, policy);

        // Wrap the native query in a standard JPA Query and execute it
        Query query = JpaHelper.createQuery(raq, getEntityManager());
        query.setFirstResult(start);
        query.setMaxResults(max);

        return query.getResultList();
    }

    public int countByExample(T entity)
    {
        //TODO find a better way...
        return findAllByExample(entity).size();
    }
}

и это трассировка стека: 

GRAVE: Exiting serializeView - Could not serialize state: com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate
java.io.NotSerializableException: com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
  at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
  at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
  at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
  at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
  at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
  at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
  at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
  at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
  at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
  at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
  at java.util.HashMap.writeObject(HashMap.java:1001)
  at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
  at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
  at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
  at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
  at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
  at java.util.HashMap.writeObject(HashMap.java:1001)
  at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
  at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
  at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
  at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1346)
  at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1154)
  at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
  at org.apache.myfaces.renderkit.ServerSideStateCacheImpl.serializeView(ServerSideStateCacheImpl.java:357)
  at org.apache.myfaces.renderkit.ServerSideStateCacheImpl.saveSerializedViewInServletSession(ServerSideStateCacheImpl.java:220)
  at org.apache.myfaces.renderkit.ServerSideStateCacheImpl.saveSerializedView(ServerSideStateCacheImpl.java:798)
  at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.saveState(HtmlResponseStateManager.java:127)
  at org.apache.myfaces.application.StateManagerImpl.saveView(StateManagerImpl.java:166)
  at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1554)
  at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:281)
  at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:85)
  at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239)
  at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191)
  at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
  at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
  at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
  at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
  at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
  at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
  at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
  at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
  at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
  at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
  at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
  at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
  at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
  at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
  at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
  at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
  at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
  at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
  at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
  at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
  at java.lang.Thread.run(Thread.java:662)

Я знаю, что могу обойти это, объявив PersonFacade как transientи использовать JNDI для получения ссылки на EJB после реконструкции, но мне действительно не нравится этот подход.

Возможно ли, что Glassfish 3.1.1 предоставляет несериализуемые EJB?Есть ли способ использовать @EJB и @ViewScoped вместе?

update: Я обнаружил, что это проблема, связанная с MyFaces, все работает нормально, используя mojarra

Ответы [ 2 ]

7 голосов
/ 13 апреля 2012

Я тоже видел проблему.То, что я сделал в прошлом, разделил мой боб на StateBean, который равен @ViewScoped, и ActionsBean, который равен @RequestScoped.ActionBean внедряется с StateBean, а также с любыми EJB-компонентами или несериализуемыми объектами, обращающимися к ресурсам.На внешнем интерфейсе вы используете StateBean для доступа к свойствам и ActionsBean для выполнения действий.

Я хотел бы услышать от кого-то еще, кто бы исключил мой шаблон "разделения бобов".

Это пример того, что я делаю: 

@ManagedBean
@ViewScoped
public class CustomControllerStateBean implements Serializable {

  private static final long serialVersionUID = 134755304347034L;

  private Person selected;

  public Person getSelected() {
    return selected;
  }

  public void setSelected(Person selected) {
    this.selected = selected;
  }
}

Уведомление CustomControllerStateBean равно @ViewScoped и Serializable содержит только Serializable объектов. 

@ManagedBean
@RequestScoped
public class CustomControllerActionsBean {

  @EJB
  private PersonFacade facade;
  @Inject
  private CustomControllerStateBean state;

  public void create() {
    facade.create(state.getSelected());
  }
}

Примечание CustomControllerActionsBean равно @RequestScoped и НЕ Serializable и содержит не Serializable объекты.

Ваш интерфейс не будет выглядетьэто: 

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:p="http://primefaces.org/ui">      

    <h:head>
        <title>TODO supply a title</title>
    </h:head>

    <h:body>

        <p:growl id="messages"/>

        <h:form>

            <p:commandButton actionListener="#{customerControllerActionsBean.create}" value="save" update="@form :messages"/>

            <p:panel>
                <f:facet name="header">
                    <h:outputText value="Details"/>
                </f:facet>

                <h:panelGrid columns="3">

                    <h:outputLabel for="name" value="#{bundle['person.name']}"/>
                    <p:inputText id="name" label="#{bundle['person.name']}" value="#{customerControllerStateBean.selected.name}"/>
                    <p:message for="name"/>

                    <h:outputLabel for="surname" value="#{bundle['person.surname']}"/>
                    <p:inputText id="surname" label="#{bundle['person.surname']}" value="#{customerControllerStateBean.selected.surname}"/>
                    <p:message for="surname"/>

                </h:panelGrid>
            </p:panel>

        </h:form>

    </h:body>
</html>

Обратите внимание CustomControllerActionsBean используется вверху в p:commandButton, а CustomControllerStateBean используется в p:inputText с.

3 голосов
/ 05 сентября 2012

:) У меня была такая же проблема: https://issues.apache.org/jira/browse/MYFACES-3581

Дэвид Блевинс из Apache TomEE помог мне записать ошибку и патч для MyFaces. Проблема в том, что прокси-классы не находятся на пути к загрузчику классов для их десериализатора.

Обходной путь - установить для этого параметра веб-приложения значение false: org.apache.myfaces.SERIALIZE_STATE_IN_SESSION

...