spring transactions in a spawned off thread

问题

im working on an existing system and need to have my spring transaction manager attach to a thread thats being spawned off of a master job thread. i keep getting this exception

org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
    at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)
    at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:687)
    at parity.model.datamapping.RefreshTask.execute(RefreshTask.java:95)
    at com.paritysys.tasks.ASyncTask$1.run(ASyncTask.java:48)
    at java.lang.Thread.run(Thread.java:662)

ive annotated everything i can think of with the transactional annotation and i still cant get this error to clear.

what am i missing

my method

@TransactionAS400
    @TransactionScores
    public void refresh() {
        ASyncTaskWorker worker = new ASyncTaskWorker() {
            public void progress(double percentage, String message) {
                logger.debug(String.format("%.2f - %s", percentage, message));
            }

            public void handleException(Throwable e) {
                try {
                    status.allowUpdating(property.getSchema());
                } catch (Exception b) {
                    // consume
                }

                logger.error("Failed to complete the refresh task", e);
            }

            public void done(boolean success) {
                status.allowUpdating(property.getSchema());
                logger.debug(String.format(
                        "Reset updating status to default for %s",
                        property.getSchema()));
            }
        };
        RefreshTask refTask = ServiceProviderContext.find(RefreshTask.class);

        refTask.init(property, worker);

        ASyncTaskHandler.getInstance().add(refTask);
        ASyncTaskHandler.getInstance().process();
    }

回答1:

I ran into similar situations where I have a thread out of Spring's aspects reach. What I suggest is the following: Define and wire an instance of a org.springframework.transaction.support.TransactionTemplate and then use:

transactionTemplate.execute(new TransactionCallback() {
    @Override
    public Object doInTransaction(TransactionStatus status) {
        //your code
    }
}

I'd recommend calling transactionTemplate.setName("myTransactionsName") beforehand for debugging issues.

回答2:

While a TransactionTemplate as suggested in another answer would work fine, there are two other options to be aware of:

1) Define the method as @Transactional (I'm not sure where those other annotations you are using are coming from) and <tx:annotation-driven> or declare a DefaultAdvisorAutoProxyCreator bean

2) Define transactions with <tx:advice> and pointcuts.

Both are documented in the Spring manual.

来源：https://stackoverflow.com/questions/7915265/spring-transactions-in-a-spawned-off-thread

标签

java

Spring

spring-transactions