JPA+Spring:UnexpectedRollbackException当需要事务时，需要新的或嵌套的

我正在用Spring、JPA和GlassFish3.1做我的第一个项目，我遇到了一些麻烦。我已经找了一个星期的解决办法，但什么也没找到

我有一个名为Role的实体，一个带有访问任何实体的通用方法的generalRepository，一个实现关于角色的特定方法的RoleRepository，以及一个调用RoleRepository的服务类。服务类的方法是事务性的，但是如果传播属性是必需的，需要新的或嵌套的，我会得到RollBackException。如果传播是强制性的，则会抛出一个异常，说明：

org.springframework.transaction.IllegalTransactionStateException: No existing transaction found for transaction marked with propagation 'mandatory'
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:339)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:262)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:101)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
    ...

如果不支持、从不支持或不支持，则select查询可以正常工作，但如果尝试执行创建、更新或删除查询，则会出现相同的回滚异常

我已经调试了select查询，在它们抛出RollBackException之前，查询会很好地得到结果，异常会在函数的末尾抛出。另外，如果我使用EntityManager的find获取实体，而服务方法没有@Transactional Anotion，则可以正常工作，但如果我将其设置为事务性，则它会崩溃，出现相同的异常

我拥有的所有实体都会发生这种情况，但我用它来解释问题

我认为我的Spring配置有问题，但我不知道是什么

这是异常的完整跟踪，在某些行中有对AuthenticationSuccessHandler类的引用，因为我在其中调用服务类：

WARNING: StandardWrapperValve[default]: PWC1406: Servlet.service() for servlet default threw exception
org.springframework.transaction.UnexpectedRollbackException: JTA transaction unexpectedly rolled back (maybe due to a timeout); nested exception is javax.transaction.RollbackException: Transaction marked for rollback.
    at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:845)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:314)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
    at com.citius.reservas.service.service$$EnhancerByCGLIB$$37b50d4.tryJPAFind(<generated>)
    at com.citius.reservas.AuthenticationSuccessHandlerImpl.onAuthenticationSuccess(AuthenticationSuccessHandlerImpl.java:47)
    ...
Caused by: javax.transaction.RollbackException: Transaction marked for rollback.
    at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:428)
    at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.commit(JavaEETransactionManagerSimplified.java:855)
    at com.sun.enterprise.transaction.UserTransactionImpl.commit(UserTransactionImpl.java:208)
    at org.springframework.transaction.jta.JtaTransactionManager.doCommit(JtaTransactionManager.java:842)
    ... 45 more

GenericRepository，一个通用类，由所有存储库实现：

public class GenericRepositoryImpl<T> implements GenericRepository<T> {

    @PersistenceContext
    private EntityManager em;

    private Class<T> type;

    public GenericRepositoryImpl( ){
        Type t = getClass().getGenericSuperclass();
        ParameterizedType pt = (ParameterizedType) t;
        type = (Class) pt.getActualTypeArguments()[0];
    }

    @Override
    public T find(Object pk) {
        try{
            return em.find(type, pk);
        }catch(java.util.NoSuchElementException ex){
            return null;
        }
    }

    @Override
    public T create(T t) {
        em.persist(t);
        em.flush();
        em.refresh(t);
        return t;
    }

    @Override
    public List<T> query(Query q) {
        List<T> list= q.getResultList();
        if(list==null)
            list=new ArrayList<T>();        
        return list;
    }
}

Spring配置applicationContext.xml是：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jpa="http://www.springframework.org/schema/data/jpa"
       xmlns:tx="http://www.springframework.org/schema/tx" 
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
          http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
          http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
">
    <context:component-scan base-package="com.***.***" />

    <jpa:repositories base-package="com.***.***.repositories" />

    <tx:annotation-driven />
    <tx:annotation-driven transaction-manager="transactionManager" />
    <context:annotation-config />

    <beans>
        <bean id="EntityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
            <property name="persistenceUnitName" value="JPAReservas"/>
        </bean>

        <bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>

        <bean id="transactionManager" 
            class="org.springframework.transaction.jta.JtaTransactionManager" >
            <property name="allowCustomIsolationLevels">
                <value>true</value>
            </property>
        </bean>
    </beans>
</beans>

Persistence.xml我在GlassFish服务器中创建了一个数据源和一个连接池：

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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_1_0.xsd">

  <persistence-unit name="JPAReservas" transaction-type="JTA">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>Reservas_mysql</jta-data-source>

    <!--Named queries-->
    <mapping-file>META-INF/mapping/Role.xml</mapping-file>

    <exclude-unlisted-classes>false</exclude-unlisted-classes>
  </persistence-unit>
</persistence>

最后，我在一个xml文件中命名了queires，如下所示： 从角色r中选择r

---

我对Spring和JPA非常在行，所以如果你知道一些改进，或者我可以做的更改，请告诉我。

好的，我已经解决了将事务类型更改为RESOURCE\u LOCAL的问题，但是在Begging，Glassfish给了我很多麻烦。我就是这样解决的：

我已将metadata complete=true添加到web.xml的标题中。解释了为什么需要这样做：

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         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"
         version="3.0" metadata-complete="true">

我已经更改了persistence.xml，因为使用RESOURCE_LOCAL，应用程序将不会使用Glassfish的连接池，我必须输入有关数据库连接的信息：

<persistence-unit name="JPAReservas" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <mapping-file>META-INF/mapping/User.xml</mapping-file>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/reservas"/>
      <property name="javax.persistence.jdbc.user" value="admin"/>
      <property name="javax.persistence.jdbc.password" value="adminpassword"/>
    </properties>
  </persistence-unit>

最后，我更改了applicationContext.xml Spring配置，因为我不能使用与JTA相同的EntityManager类和RESOURCE_LOCAL：

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
       <property name="entityManagerFactory" ref="EntityManagerFactory" />
</bean>

---

就这些。我不知道为什么我不能像以前那样使用JTA，但我已经解决了！！！：。谢谢大家!

您尝试过在persistence.xml中使用user transaction type=RESOURCE\u LOCAL吗？我尝试过，但它给Glassfish带来了很多问题。好的，我看到这些行重复了：。我不知道这是否会导致一些问题……不，我已经删除了一个，然后删除了另一个，但仍然失败。我在Weblogic 10.3.6中遇到了与Spring数据jpa类似的问题。我注意到，我仍然可以使用JTA，因为我可以在没有事务上下文的情况下（例如在用@TransactionAttributeNEVER注释的方法中）对EJB进行第一次调用。对我来说，问题在于SpringDataJPA在向EntityManager注册NamedQuery时导致事务回滚。因此，您可以尝试设置glassfish EJB池来预创建EJB的一组实例，以便在事务外部初始化JPA存储库。

    <named-query name="Role.findByName">
        <query>SELECT r FROM Role r WHERE r.name = :name</query>
    </named-query>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         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"
         version="3.0" metadata-complete="true">

<persistence-unit name="JPAReservas" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <mapping-file>META-INF/mapping/User.xml</mapping-file>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
      <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/reservas"/>
      <property name="javax.persistence.jdbc.user" value="admin"/>
      <property name="javax.persistence.jdbc.password" value="adminpassword"/>
    </properties>
  </persistence-unit>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
       <property name="entityManagerFactory" ref="EntityManagerFactory" />
</bean>