调用utx.begin()抛出“java.lang.IllegalStateException:Operation not allowed”时UserTransaction失败

时间:2012-08-01 22:35:53

标签: jpa controller ejb eclipselink stateless-session-bean

我想使用ejb和jpa控制器,在netbeans中控制器是自动生成的......我尝试从类(UniversidadServiceEJB)调用jpa控制器,这是一个会话bean无状态,我调试了项目以及UserTransaction和EntityManagerFactory是成功创建但是当调用jpa控制器(UniversityJpaController)中的方法utx.begin时抛出此异常:

java.lang.IllegalStateException:不允许操作。

at com.sun.enterprise.transaction.UserTransactionImpl.checkUserTransactionMethodAccess(UserTransactionImpl.java:146)     at com.sun.enterprise.transaction.UserTransactionImpl.begin(UserTransactionImpl.java:162)     在controller.UniversidadJpaController.create(UniversidadJpaController.java:47)     at services.UniversidadServiceEJB.create(UniversidadServiceEJB.java:40)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     在java.lang.reflect.Method.invoke(Method.java:601)     在org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)     在org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)     at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)     at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)     at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)     在com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)     at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:49)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     在java.lang.reflect.Method.invoke(Method.java:601)     at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)     at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)     在com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)     at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)     at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ... ... ...

Session Bean类是:

@Stateless(name="UniversidadJpa")
@Remote(IGestionUniversidad.class)
public class UniversidadServiceEJB {

    @Resource
    private UserTransaction utx;
    @PersistenceUnit(unitName="ApplicationEJBPU")
    EntityManagerFactory emf;


    public void create(Universidad universidad)  throws Exception {        
        try {
            UniversidadJpaController universidadController = new UniversidadJpaController(utx,emf);
            universidadController.create(universidad);
        } catch (RollbackFailureException ex) {
            Logger.getLogger(UniversidadServiceEJB.class.getName()).log(Level.SEVERE, null, ex);
        } catch (Exception ex) {
            Logger.getLogger(UniversidadServiceEJB.class.getName()).log(Level.SEVERE, null, ex);
        } 

    } 

}

jpacontroller类是:

public class UniversidadJpaController implements Serializable {

    public UniversidadJpaController(UserTransaction utx, EntityManagerFactory emf) {
        this.utx = utx;
        this.emf = emf;
    }
    private UserTransaction utx = null;
    private EntityManagerFactory emf = null;

    public EntityManager getEntityManager() {
        return emf.createEntityManager();
    }

    public void create(Universidad universidad) throws RollbackFailureException, Exception {
        if (universidad.getEstudiantes() == null) {
            universidad.setEstudiantes(new ArrayList<Estudiante>());
        }
        EntityManager em = null;
        try {
            utx.begin();
            em = getEntityManager();
            List<Estudiante> attachedEstudiantes = new ArrayList<Estudiante>();
            for (Estudiante estudiantesEstudianteToAttach : universidad.getEstudiantes()) {
                estudiantesEstudianteToAttach = em.getReference(estudiantesEstudianteToAttach.getClass(), estudiantesEstudianteToAttach.getId());
                attachedEstudiantes.add(estudiantesEstudianteToAttach);
            }
            universidad.setEstudiantes(attachedEstudiantes);
            em.persist(universidad);
            for (Estudiante estudiantesEstudiante : universidad.getEstudiantes()) {
                Universidad oldUniversidadOfEstudiantesEstudiante = estudiantesEstudiante.getUniversidad();
                estudiantesEstudiante.setUniversidad(universidad);
                estudiantesEstudiante = em.merge(estudiantesEstudiante);
                if (oldUniversidadOfEstudiantesEstudiante != null) {
                    oldUniversidadOfEstudiantesEstudiante.getEstudiantes().remove(estudiantesEstudiante);
                    oldUniversidadOfEstudiantesEstudiante = em.merge(oldUniversidadOfEstudiantesEstudiante);
                }
            }
            utx.commit();
        } catch (Exception ex) {
//            try {
//                utx.rollback();
//            } catch (Exception re) {
//                throw new RollbackFailureException("An error occurred attempting to roll back the transaction.", re);
//            }
            throw ex;
        } finally {
            if (em != null) {
                em.close();
            }
        }
    }
}

持久性单位是:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="ApplicationEJBPU" transaction-type="JTA">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>sqlServer</jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="eclipselink.ddl-generation" value="create-tables"/>
    </properties>
  </persistence-unit>
</persistence>

请问有什么问题? 非常感谢你......

2 个答案:

答案 0 :(得分:1)

通常在EJB环境中,事务由容器管理。当发生异常时,它将Bean方法包装在具有自动回滚的事务中。这也意味着不允许手动启动/提交/回滚事务并抛出IllegalStateException。

参考:http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/Transaction3.html

答案 1 :(得分:0)

如上所述,在容器管理事务(CMT)下,如果使用API​​,则会获得getStatus()异常。

https://issues.jboss.org/browse/JBSEAM-456

但你可以作为替代用途: @Resource TransactionSynchronizationRegistry

How to tell if a transaction is active in a Java EE 6 interceptor?

顺便说一下 - getStatus()api会对glassfish造成打击,但它不会在weblogic 12.1.2上爆炸。 Weblogic实际上应该在get status api上抛出异常。

在 @Resource TransactionSynchronizationRegistry

在两个容器上都能正常工作。