jpa transaction 回滚,在JPA + Spring中异常后回滚事务

最新推荐文章于 2025-08-13 08:40:22 发布

转载最新推荐文章于 2025-08-13 08:40:22 发布 · 140 阅读

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#jpa transaction 回滚

在使用Spring、JPA和Hibernate时，遇到PersistenceException时，开发者通常希望捕获异常并返回错误信息，而不是向上抛出。然而，当事务因异常被标记为rollbackOnly时，直接捕获并尝试不重新抛出会导致问题。解决这个问题的方法是将持久化逻辑移到单独的DAO类中，让服务类处理PersistenceException，从而避免事务回滚失败。

I'm using Spring and JPA with HIbernate underneath. When a PersistenceException is thrown, I want to catch it and return the error message so that it is not propagated up to the caller.

@Transactional

public String save(Object bean) {

String error = null;

try {

EntityManager entityManager = getEntityManager();

for (int i = 0, n = entities.size(); i < n; i ++) {

entityManager.merge(entities.get(i));

}

catch (PersistenceException e) {

error = e.getMessage();

}

return error;

}

But I get an exception saying that javax.persistence.RollbackException: Transaction marked as rollbackOnly. I get that the transaction needs to be rolled back after an exception but how do I roll it back when I've catched the exception and do not want to re-throw it?

解决方案

It appears that there is no way to roll back a failed transaction managed by Spring ORM. The code shown in the question is a service class. Extracting its persistence routine to a separate DAO class and having the service class handle PersistenceExceptions did the trick.