spring 事务

@Autowired
 private 
DataSourceTransactionManager transactionManager;	

		TransactionTemplate transactionTemplate = new TransactionTemplate(transactionManager);
		transactionTemplate.execute(new TransactionCallbackWithoutResult() {

			@Override
			protected void doInTransactionWithoutResult(TransactionStatus status) {
				
				if(!entitys.isEmpty()) {
					// 先删掉轮转表中的所有数据再添加
					delete...;
					update...;
					}
			}

		});