import org.springframework.orm.hibernate3.HibernateAccessor; //导入依赖的package包/类
@Test
public void testOpenSessionInViewInterceptorWithSingleSessionAndFlush() throws Exception {
	SessionFactory sf = mock(SessionFactory.class);
	Session session = mock(Session.class);

	OpenSessionInViewInterceptor interceptor = new OpenSessionInViewInterceptor();
	interceptor.setSessionFactory(sf);
	interceptor.setFlushMode(HibernateAccessor.FLUSH_AUTO);

	given(sf.openSession()).willReturn(session);
	given(session.getSessionFactory()).willReturn(sf);
	interceptor.preHandle(this.webRequest);
	assertTrue(TransactionSynchronizationManager.hasResource(sf));

	interceptor.postHandle(this.webRequest, null);
	assertTrue(TransactionSynchronizationManager.hasResource(sf));

	interceptor.afterCompletion(this.webRequest, null);
	assertFalse(TransactionSynchronizationManager.hasResource(sf));
	verify(session).flush();
	verify(session).close();
}
 

import org.springframework.orm.hibernate3.HibernateAccessor; //导入依赖的package包/类
@Override
public User findByUserName( final String userName ) {

    // we make this method safer to call in a transaction, as it really is a
    // read-only method that should be
    // accessing information that is already committed.
    HibernateTemplate t = new HibernateTemplate( this.getSessionFactory() );
    t.setAlwaysUseNewSession( true );
    t.setFlushMode( HibernateAccessor.FLUSH_NEVER );
    List<?> r = t.findByNamedParam( "from User u where u.userName=:userName", "userName", userName );
    if ( r.isEmpty() ) {
        return null;
    } else if ( r.size() > 1 ) {
        throw new IllegalStateException( "Multiple users with name=" + userName );
    }
    return ( User ) r.get( 0 );
}
 

import org.springframework.orm.hibernate3.HibernateAccessor; //导入依赖的package包/类
@SuppressWarnings("deprecation")
protected void checkWriteOperationAllowed(Session session)
		throws InvalidDataAccessApiUsageException {
	if (getHibernateTemplate().isCheckWriteOperations()
			&& getHibernateTemplate().getFlushMode() != HibernateAccessor.FLUSH_EAGER
			&& FlushMode.NEVER.equals(session.getFlushMode())) {
		throw new InvalidDataAccessApiUsageException(
				"Write operations are not allowed in read-only mode (FlushMode.NEVER) - turn your Session "
						+ "into FlushMode.AUTO or remove 'readOnly' marker from transaction definition");
	}
}