Disabling auto-commit in NamedParameterJdbcTemplate.batchUpdate

问题

I am doing a batch update into my DB table using NamedParameterJdbcTemplate.batchUpdate, but I would like to disable auto-commit and perform the commit manually.

I can set auto-commit mode off from the connection object, but not sure how to do the same using NamedParameterJdbcTemplate object.

回答1:

I have done my implementation using TransactionTemplate

It has an execute method and I do the business logic inside a callback in this function.

transTemplate.execute( new TransactionCallbackWithoutResult()
        {       
                @Override
                protected void doInTransactionWithoutResult( TransactionStatus status)
                {
                    status.setRollbackOnly();
                    //business logic
                }

        });

回答2:

I assume you are aware of the transactional management in Spring where by defining @Transactional and passing metadata of Propagation and Isolation you can elegantly manage transactions. If not take a look at the Spring documentation. In most cases that's all you need.

If you want to get transaction management at your own hands and fine-tune it (aka perform commit and rollbacks at will) you have to get the underlying TransactionManager directly.

Quoting from the Spring docs:

Using the PlatformTransactionManager

You can also use the org.springframework.transaction.PlatformTransactionManager directly to manage your transaction. Simply pass the implementation of the PlatformTransactionManager you are using to your bean through a bean reference. Then, using the TransactionDefinition and TransactionStatus objects you can initiate transactions, roll back, and commit.

DefaultTransactionDefinition def = new DefaultTransactionDefinition();
// explicitly setting the transaction name is something that can only be done programmatically
def.setName("SomeTxName");
def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);

TransactionStatus status = txManager.getTransaction(def);
try {
  // execute your business logic here
}
catch (MyException ex) {
  txManager.rollback(status);
  throw ex;
}
txManager.commit(status);

来源：https://stackoverflow.com/questions/16842852/disabling-auto-commit-in-namedparameterjdbctemplate-batchupdate

标签

java

sql

Spring

jdbctemplate

autocommit