弹簧数据JPA嵌套交易回滚未删除插入

Question

我尝试在交易中将2个记录插入2个记录。第二个插件失败，但在回滚中，第一个插件未删除：

   @Resource
      private WebMessageRep rep; //<-- extends JpaRepository
@Transactional
  public void test() {
    WebMessage wm = new WebMessage(.valid params.);
    wm = rep.save(wm);//<-- save is crud save which is transactional by default
    WebMessage wm2 = new WebMessage(.invalid params.);
    rep.save(wm2);
  }

（我还尝试用以下方式替换保存方法jpacontext.getentitymanagerbymanagedtype（webmessage.class）.persist（wm）;这样我就不使用Crud保存，但问题仍然存在）

我启用了交易记录以查看正在发生的事情，我发现了：

在调用test（）之前创建了新事务，因为 @transactional annotaion：

Creating new transaction with name [com..data.webmessage.WebMessageServiceImpl.test]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
 Opened new EntityManager [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=ExecutableList{size=0} updates=ExecutableList{size=0} deletions=ExecutableList{size=0} orphanRemovals=ExecutableList{size=0} collectionCreations=ExecutableList{size=0} collectionRemovals=ExecutableList{size=0} collectionUpdates=ExecutableList{size=0} collectionQueuedOps=ExecutableList{size=0} unresolvedInsertDependencies=null])] for JPA transaction

呼叫首先保存，它看到了第一个交易：

Found thread-bound EntityManager [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=ExecutableList{size=0} updates=ExecutableList{size=0} deletions=ExecutableList{size=0} orphanRemovals=ExecutableList{size=0} collectionCreations=ExecutableList{size=0} collectionRemovals=ExecutableList{size=0} collectionUpdates=ExecutableList{size=0} collectionQueuedOps=ExecutableList{size=0} unresolvedInsertDependencies=null])] for JPA transaction

第二保存也是第一个交易：

Found thread-bound EntityManager [SessionImpl(PersistenceContext[entityKeys=[EntityKey[com..shared.WebMessage#107]],collectionKeys=[]];ActionQueue[insertions=ExecutableList{size=1} updates=ExecutableList{size=0} deletions=ExecutableList{size=0} orphanRemovals=ExecutableList{size=0} collectionCreations=ExecutableList{size=0} collectionRemovals=ExecutableList{size=0} collectionUpdates=ExecutableList{size=0} collectionQueuedOps=ExecutableList{size=0} unresolvedInsertDependencies=null])] for JPA transaction
2017-02-22 14:07:22,000 [           main] DEBUG orm.jpa.JpaTransactionManager             - Participating in existing transaction

退出test（）已完成提交：

 Committing JPA transaction on EntityManager [SessionImpl(PersistenceContext[entityKeys=[EntityKey[com..shared.WebMessage#108], EntityKey[com..shared.WebMessage#107]],collectionKeys=[]];ActionQueue[insertions=ExecutableList{size=2} updates=ExecutableList{size=0} deletions=ExecutableList{size=0} orphanRemovals=ExecutableList{size=0} collectionCreations=ExecutableList{size=0} collectionRemovals=ExecutableList{size=0} collectionUpdates=ExecutableList{size=0} collectionQueuedOps=ExecutableList{size=0} unresolvedInsertDependencies=null])]

失败：

    Column 'text' cannot be null
 HHH000010: On release of batch it still contained JDBC statements
HHH000346: Error during managed flush [org.hibernate.exception.ConstraintViolationException: could not execute statement]
    Initiating transaction rollback after commit exception

回滚：

Rolling back JPA transaction on EntityManager [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=ExecutableList{size=0} updates=ExecutableList{size=0} deletions=ExecutableList{size=0} orphanRemovals=ExecutableList{size=0} collectionCreations=ExecutableList{size=0} collectionRemovals=ExecutableList{size=0} collectionUpdates=ExecutableList{size=0} collectionQueuedOps=ExecutableList{size=0} unresolvedInsertDependencies=null])]

奇怪的是，第一个插入的记录仍在我的数据库（MySQL）中。

不确定这是否意味着什么，但是在犯罪中我们有：插入= executablist {size = 2}但是回滚是：插入= executablist {size = 0}

有人知道为什么它不会回滚第一个插入吗？

我的交易配置很简单：

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="emf" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />

解雇我的调试器表明，尝试回滚时我的交易不再活跃。让我解释一下：

[jpatransactionmanager.java]

@Override
    protected void doRollback(DefaultTransactionStatus status) {
        JpaTransactionObject txObject = (JpaTransactionObject) status.getTransaction();
        if (status.isDebug()) {
            logger.debug("Rolling back JPA transaction on EntityManager [" +
                    txObject.getEntityManagerHolder().getEntityManager() + "]");
        }
        try {
            EntityTransaction tx = txObject.getEntityManagerHolder().getEntityManager().getTransaction();
            if (tx.isActive()) {
                tx.rollback();
            }
        }
        catch (PersistenceException ex) {
            throw new TransactionSystemException("Could not roll back JPA transaction", ex);
        }
        finally {
            if (!txObject.isNewEntityManagerHolder()) {
                // Clear all pending inserts/updates/deletes in the EntityManager.
                // Necessary for pre-bound EntityManagers, to avoid inconsistent state.
                txObject.getEntityManagerHolder().getEntityManager().clear();
            }
        }
    }

上述代码中的tx.isactive（）返回false，这意味着没有执行回滚。

现在的最大问题是为什么我的交易不再活动了？

Answer 1

好吧，似乎问题是mysql，春季数据生成的表jpa类型是myisam。

使用某些类型的交易时，Myisam似乎很不高兴。

我将表转换为InnoDB，现在起作用：当交易失败和交易是回滚时，所有插入的行均被删除。当表格为Myisam时，这不会发生。