Hibernate JPA和Spring javax.persistence.TransactionRequiredException：没有事务正在进行中 [英] Hibernate JPA and Spring javax.persistence.TransactionRequiredException: no transaction is in progress

问题描述

当我致电：

entityManager.flush()

我得到了标题中提到的异常。

I get the exception mentioned in the title.

我正在使用Hibernate JPA。

I am using Hibernate JPA.

推荐答案

在遇到这个问题并花了几个小时试图解决之后我终于找到了理由：Spring有一个bug并且可以'如果同一个类具有 @Service 注释以自动装配，则使用 @Transactional 注释维护交易。

After encountering this problem myself and spending a few hours trying to get it resolved I finally found a reason for it: Spring has a bug and can't maintain transactions with @Transactional annotation if the same class has @Service annotation for the means of autowiring.

从相关服务类中删除 @Service 注释后，在该服务类中声明了一个合适的bean XML配置：

Once the @Service annotation was removed from the service class in question, and an appropriate bean was declared in the XML config:

<bean id="myService" class="com.example.myapp.service.MyServiceImpl" />

问题消失了。

检查有关详细信息，请参阅 JIRA错误。

Check this JIRA bug for more details.

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