spring事務送出前後操作

希望在spring 事務送出後對緩存操作，如果送出失敗就不要送出緩存

//這個放在事務方法操作中
 TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronizationAdapter() {
            @Override
            public void afterCommit() {
             //緩存操作
            }
        });
           

以下是對于的TransactionSynchronizationAdapter 中的方法

/**
 * Interface for transaction synchronization callbacks.
 * Supported by AbstractPlatformTransactionManager.
 *
 * <p>TransactionSynchronization implementations can implement the Ordered interface
 * to influence their execution order. A synchronization that does not implement the
 * Ordered interface is appended to the end of the synchronization chain.
 *
 * <p>System synchronizations performed by Spring itself use specific order values,
 * allowing for fine-grained interaction with their execution order (if necessary).
 *
 * @author Juergen Hoeller
 * @since 02.06.2003
 * @see TransactionSynchronizationManager
 * @see AbstractPlatformTransactionManager
 * @see org.springframework.jdbc.datasource.DataSourceUtils#CONNECTION_SYNCHRONIZATION_ORDER
 */
public interface TransactionSynchronization extends Flushable {

	/** Completion status in case of proper commit */
	int STATUS_COMMITTED = 0;

	/** Completion status in case of proper rollback */
	int STATUS_ROLLED_BACK = 1;

	/** Completion status in case of heuristic mixed completion or system errors */
	int STATUS_UNKNOWN = 2;


	/**
	 * Suspend this synchronization.
	 * Supposed to unbind resources from TransactionSynchronizationManager if managing any.
	 * @see TransactionSynchronizationManager#unbindResource
	 */
	void suspend();

	/**
	 * Resume this synchronization.
	 * Supposed to rebind resources to TransactionSynchronizationManager if managing any.
	 * @see TransactionSynchronizationManager#bindResource
	 */
	void resume();

	/**
	 * Flush the underlying session to the datastore, if applicable:
	 * for example, a Hibernate/JPA session.
	 * @see org.springframework.transaction.TransactionStatus#flush()
	 */
	@Override
	void flush();

	/**
	 * Invoked before transaction commit (before "beforeCompletion").
	 * Can e.g. flush transactional O/R Mapping sessions to the database.
	 * <p>This callback does <i>not</i> mean that the transaction will actually be committed.
	 * A rollback decision can still occur after this method has been called. This callback
	 * is rather meant to perform work that's only relevant if a commit still has a chance
	 * to happen, such as flushing SQL statements to the database.
	 * <p>Note that exceptions will get propagated to the commit caller and cause a
	 * rollback of the transaction.
	 * @param readOnly whether the transaction is defined as read-only transaction
	 * @throws RuntimeException in case of errors; will be <b>propagated to the caller</b>
	 * (note: do not throw TransactionException subclasses here!)
	 * @see #beforeCompletion
	 */
	void beforeCommit(boolean readOnly);

	/**
	 * Invoked before transaction commit/rollback.
	 * Can perform resource cleanup <i>before</i> transaction completion.
	 * <p>This method will be invoked after {@code beforeCommit}, even when
	 * {@code beforeCommit} threw an exception. This callback allows for
	 * closing resources before transaction completion, for any outcome.
	 * @throws RuntimeException in case of errors; will be <b>logged but not propagated</b>
	 * (note: do not throw TransactionException subclasses here!)
	 * @see #beforeCommit
	 * @see #afterCompletion
	 */
	void beforeCompletion();

	/**
	 * Invoked after transaction commit. Can perform further operations right
	 * <i>after</i> the main transaction has <i>successfully</i> committed.
	 * <p>Can e.g. commit further operations that are supposed to follow on a successful
	 * commit of the main transaction, like confirmation messages or emails.
	 * <p><b>NOTE:</b> The transaction will have been committed already, but the
	 * transactional resources might still be active and accessible. As a consequence,
	 * any data access code triggered at this point will still "participate" in the
	 * original transaction, allowing to perform some cleanup (with no commit following
	 * anymore!), unless it explicitly declares that it needs to run in a separate
	 * transaction. Hence: <b>Use {@code PROPAGATION_REQUIRES_NEW} for any
	 * transactional operation that is called from here.</b>
	 * @throws RuntimeException in case of errors; will be <b>propagated to the caller</b>
	 * (note: do not throw TransactionException subclasses here!)
	 */
	void afterCommit();

	/**
	 * Invoked after transaction commit/rollback.
	 * Can perform resource cleanup <i>after</i> transaction completion.
	 * <p><b>NOTE:</b> The transaction will have been committed or rolled back already,
	 * but the transactional resources might still be active and accessible. As a
	 * consequence, any data access code triggered at this point will still "participate"
	 * in the original transaction, allowing to perform some cleanup (with no commit
	 * following anymore!), unless it explicitly declares that it needs to run in a
	 * separate transaction. Hence: <b>Use {@code PROPAGATION_REQUIRES_NEW}
	 * for any transactional operation that is called from here.</b>
	 * @param status completion status according to the {@code STATUS_*} constants
	 * @throws RuntimeException in case of errors; will be <b>logged but not propagated</b>
	 * (note: do not throw TransactionException subclasses here!)
	 * @see #STATUS_COMMITTED
	 * @see #STATUS_ROLLED_BACK
	 * @see #STATUS_UNKNOWN
	 * @see #beforeCompletion
	 */
	void afterCompletion(int status);

}



/**
 * Simple {@link TransactionSynchronization} adapter containing empty
 * method implementations, for easier overriding of single methods.
 *
 * <p>Also implements the {@link Ordered} interface to enable the execution
 * order of synchronizations to be controlled declaratively. The default
 * {@link #getOrder() order} is {@link Ordered#LOWEST_PRECEDENCE}, indicating
 * late execution; return a lower value for earlier execution.
 *
 * @author Juergen Hoeller
 * @since 22.01.2004
 */
public abstract class TransactionSynchronizationAdapter implements TransactionSynchronization, Ordered {

	@Override
	public int getOrder() {
		return Ordered.LOWEST_PRECEDENCE;
	}

	@Override
	public void suspend() {
	}

	@Override
	public void resume() {
	}

	@Override
	public void flush() {
	}

	@Override
	public void beforeCommit(boolean readOnly) {
	}

	@Override
	public void beforeCompletion() {
	}

	@Override
	public void afterCommit() {
	}

	@Override
	public void afterCompletion(int status) {
	}

}