spring事务应用方式

今天有同事问一个j2ee事务的问题，做个小的总结：
1、基于注解的事务
在类和方法上配置类似

 @Transactional(propagation=Propagation.SUPPORTS,readOnly=true)

代码的
2、基于配置文件的事务
在xml文件配置类似

配置的
3、硬编码的事务
这种也是我同事需要的那种，希望硬编码控制的类似

 /**
 * CardRecordService.java
 * org.crazystone.car.service
 *
 * Function： TODO 
 *
 *   ver     date      		author
 * ──────────────────────────────────
 *   		 2012-8-30 		zhangzenglun
 *
 * Copyright (c) 2012, TNT All Rights Reserved.
*/

package org.crazystone.car.service;

import org.crazystone.car.dao.CarRecordDAO;
import org.crazystone.car.util.model.CarRecord;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionStatus;

/**
 * ClassName:CardRecordService
 *
 * @author   zhangzenglun
 * @version  1.0
 * @since    v1.0
 * @Date	 2012-8-30 下午6:37:38 
 */


@Service
public class CardRecordService  {
	@Autowired
	CarRecordDAO carRecordDAO;
	@Autowired
	PlatformTransactionManager transactionManager;


	public void batchSave() {

		//DefaultTransactionDefinition definition = new DefaultTransactionDefinition();
		TransactionStatus transactionStatus = transactionManager.getTransaction(null);
		try {
			CarRecord record = null;

			//record = new CarRecord();
			record.setCarid("131");
			record.setCartype("d");
			record.setCollectionAuthority("d");
			record.setDealSign("");
			this.carRecordDAO.insertNoPk(record);
			record = new CarRecord();
			record.setCarid("121");
			record.setCartype("d");
			record.setCollectionAuthority("d");
			record.setDealSign("");
			this.carRecordDAO.insertNoPk(record);
			transactionManager.commit(transactionStatus);
		} catch (Exception e) {
			e.printStackTrace();
			transactionManager.rollback(transactionStatus);
		}


	}

	public void batchSave2() {
		//DefaultTransactionDefinition definition = new DefaultTransactionDefinition();
			TransactionStatus globalTransactionStatus = transactionManager.getTransaction(null);
			try {

				CarRecord record = null;
				record = new CarRecord();
				record.setCarid("131");
				record.setCartype("d");
				record.setCollectionAuthority("d");
				record.setDealSign("");
				this.carRecordDAO.insertNoPk(record);


				TransactionStatus localTransactionStatus = transactionManager
						.getTransaction(null);
				record = new CarRecord();
				record = null;
				record.setCarid("121");
				record.setCartype("d");
				record.setCollectionAuthority("d");
				record.setDealSign("");
				this.carRecordDAO.insertNoPk(record);
				transactionManager.commit(localTransactionStatus);

				transactionManager.commit(globalTransactionStatus);


			} catch (Exception e) {
				transactionManager.rollback(globalTransactionStatus);
			}




	}

}

这种代码的