如何在jboss中处理JPA/hibernate中的OptimisticLockException？

我正在使用JPA处理JBOSS中的实体。在各种事务中，一个实体将由多个线程更新。我在实体中添加了@Version属性，并且在更新实体之前，我获得了OptimisticLock。如果事务失败，我无法处理异常并重试

实体为

@Entity  
public class DataEntity   
{  
    @Id  
    int id;  
    long count;  
    @Version  
    int versionAttribute;  
     ....  
     ....  

更新实体的代码为

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public void updateEntity()  
{  
     DataEntity d=entityManager.find(DataEntity.class,0,LockModeType.OPTIMISTIC);
     d.setCount(d.getCount()+1);  
}  

如您所见，updateEntity（）方法使用TransactionAttributeType.REQUIRES\u NEW来创建新事务。这里的事务是容器管理的。因此，请帮助我在引发OptimisticLockingException时重试

---

在哪里处理异常/在哪里写入重试逻辑？

如何处理事务边界外的事务

public class SafeHandleInterceptor implements MethodInterceptor {

private final Logger logger = LoggerFactory.getLogger();
private int maxRetryCount = 3;

public void setMaxRetryCount(int maxRetryCount) {
    this.maxRetryCount = maxRetryCount;
}

@Override
public Object invoke(MethodInvocation invocation) throws Throwable {
    int retryCount = 0;
    while (true) {
        try {
            ReflectiveMethodInvocation inv = (ReflectiveMethodInvocation) invocation;
            // clone before proceed, each inv could be proceed only once
            MethodInvocation anotherInvocation = inv.invocableClone();
            return anotherInvocation.proceed();
        } catch (OptimisticException e) {
            if (retryCount++ >= maxRetryCount) {
                throw e;
            } else {
                logger.info("retry for exception:" + e.getMessage(), e);
                continue;
            }
        }
    }
}

}

编织：

<bean id="your original transactional bean name" class="org.springframework.aop.framework.ProxyFactoryBean">
    <property name="target" ref="reference to your original transactional bean" />
    <property name="proxyInterfaces"
        value="your interface" />
    <property name="interceptorNames" value="safeHandleInterceptor" />
</bean>