鈍化問題有狀態會話Bean

Question

我使用JBoss 6.1決賽，並獲得我的Web應用程序後，以下錯誤消息運行一段時間（注意應用程序不會崩潰），其次是一個很長的堆棧跟蹤。我注意到這個問題只發生在有狀態會話bean被注入到其中的有狀態會話bean中。

16：10：59769 ERROR [org.jboss.ejb3.cache.simple.SimpleStatefulCache.UutSerialNumberServiceBean]問題鈍化螺紋：javax.ejb.EJBException異常：無法鈍化;未能保存狀態

這裏是有問題的有狀態會話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; 
    } 
} 

這裏是注入有狀態會話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; 
    } 
} 

人知道什麼不對的？

感謝， 傑森

Answer 1

EntityManageris not serializable，我想這就是爲什麼它失敗。

從這裏的選項夫婦：

• 停用鈍化
• 從SFSB刪除持久化上下文（這很可能會殺了你的擴展模式）（如果你不需要這種機制最簡單的選項）
• 與Hibernate會話，這是序列化替換的EntityManager（考慮到實驗性的，我從來沒有嘗試過了我自己）