钝化问题有状态会话Bean

Question

我使用JBoss 6.1决赛，并获得我的Web应用程序后，以下错误消息运行一段时间（注意应用程序不会崩溃），其次是一个很长的堆栈跟踪。我注意到这个问题只发生在有状态会话bean被注入到其中的有状态会话bean中。

16：10：59769 ERROR [org.jboss.ejb3.cache.simple.SimpleStatefulCache.UutSerialNumberServiceBean]问题钝化螺纹：javax.ejb.EJBException异常：无法钝化;未能保存状态

这里是有问题的有状态会话bean ...

package com.ray.TEI.ejb; 

import java.io.Serializable; 

import javax.ejb.Stateful; 
import javax.inject.Inject; 
import javax.persistence.EntityManager; 
import javax.persistence.PersistenceContext; 
import javax.persistence.PersistenceContextType; 

import com.ray.TEI.model.TestProcedure; 
import com.ray.TEI.model.Uut; 
import com.ray.TEI.model.UutSerialNumber; 

@Stateful 
public class UutSerialNumberServiceBean implements Serializable { 
    private static final long serialVersionUID = 1L; 
    @PersistenceContext(unitName="jasoni", type=PersistenceContextType.EXTENDED) 
    protected EntityManager em; 
    @Inject private ExecProcedureServiceBean execProcedureServiceBean; 

    public boolean isDuplicateSerialNumber(Uut uut, String serialNumber) { 
    return ((Number)em.createNamedQuery("UutSerialNumber.getCountByUutIdAndSerialNumber") 
      .setParameter("uut", uut) 
      .setParameter("serialNumber", serialNumber) 
      .getSingleResult()).intValue() > 0; 
    } 

    public UutSerialNumber findUutSerialNumberByUutSerialNumberId(Integer uutSerialNumberId) { 
    return em.find(UutSerialNumber.class, uutSerialNumberId); 
    } 

    public UutSerialNumber editSerialNumber(Integer uutSerialNumberId, String serialNumber) { 
    UutSerialNumber uutSerialNumber = findUutSerialNumberByUutSerialNumberId(uutSerialNumberId); 
    uutSerialNumber.setSerialNumber(serialNumber); 
    return uutSerialNumber; 
    } 

    public UutSerialNumber createSerialNumber(Uut uut, String serialNumber) { 
    UutSerialNumber uutSerialNumber = new UutSerialNumber(); 
    uutSerialNumber.setSerialNumber(serialNumber); 
    uutSerialNumber.setUut(uut); 
    uut.getSerialNumbers().add(uutSerialNumber); 
    em.persist(uutSerialNumber); 
    for (TestProcedure testProcedure : uut.getTestProcedures()) { 
     execProcedureServiceBean.createExecProcedure(uutSerialNumber, testProcedure); 
    } 
    return uutSerialNumber; 
    } 
} 

这里是注入有状态会话bean ...

package com.ray.TEI.ejb; 

import java.io.Serializable; 

import javax.ejb.Stateful; 
import javax.persistence.EntityManager; 
import javax.persistence.PersistenceContext; 
import javax.persistence.PersistenceContextType; 

import com.ray.TEI.model.ExecProcedure; 
import com.ray.TEI.model.TestProcedure; 
import com.ray.TEI.model.UutSerialNumber; 


@Stateful 
public class ExecProcedureServiceBean implements Serializable { 
    private static final long serialVersionUID = 1L; 
    @PersistenceContext(unitName="jasoni", type=PersistenceContextType.EXTENDED) 
    protected EntityManager em; 

    public ExecProcedure createExecProcedure(UutSerialNumber uutSerialNumber, TestProcedure testProcedure) { 
    ExecProcedure execProcedure = new ExecProcedure(); 
    execProcedure.setUutSerialNumber(uutSerialNumber); 
    execProcedure.setTestProcedure(testProcedure); 
    execProcedure.setIterationCount(0); 
    em.persist(execProcedure); 
    return execProcedure; 
    } 
} 

人知道什么不对的？

感谢， 杰森

Answer 1

EntityManageris not serializable，我想这就是为什么它失败。

从这里的选项夫妇：

• 停用钝化
• 从SFSB删除持久化上下文（这很可能会杀了你的扩展模式）（如果你不需要这种机制最简单的选项）
• 与Hibernate会话，这是序列化替换的EntityManager（考虑到实验性的，我从来没有尝试过了我自己）