使用aop解决事务问题（xml版）
一、引入依赖
pom.xml代码：
4.0.0
com.william
spring_day04_01_tx_aop_xml
1.0-SNAPSHOT
1.8
1.8
mysql
mysql-connector-java
5.1.47
org.springframework
spring-context-support
5.0.2.RELEASE
org.springframework
spring-test
5.0.2.RELEASE
com.mchange
c3p0
0.9.5.2
junit
junit
4.12
commons-dbutils
commons-dbutils
1.4
org.aspectj
aspectjweaver
1.8.9
二、目录结构
三、applicationContext.xml配置文件
四、Class文件
1.AccountDaoImpl
代码：
package com.william.Dao.Impl;
import com.william.Dao.AccountDao;
import com.william.domain.Account;
import com.william.utils.ConnectionUtils;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.sql.SQLException;
import java.util.List;
/**
* @author ：lijunxuan
* @date ：Created in 2019/5/27 16:00
* @description ：
* @version: 1.0
*/
@Repository
public class AccountDaoImpl implements AccountDao {
@Autowired
ConnectionUtils connectionUtils;
@Autowired
QueryRunner queryRunner;
@Override
public Account findByUserName(String username ) {
String sql="select * from account where name = ?";
try {
return queryRunner.query(connectionUtils.getThreadConnection(),sql,new BeanHandler<>(Account.class),username);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
@Override
public void Update(Account account) {
String sql =" update account set money = ? where id =?";
Object [] params= {account.getMoney(),account.getId()};
try {
queryRunner.update(connectionUtils.getThreadConnection(),sql,params);
} catch (SQLException e) {
e.printStackTrace();
}
}
}
2.AccountServiceImpl
package com.william.service.Impl;
import com.william.Dao.AccountDao;
import com.william.domain.Account;
import com.william.service.AccountService;
import com.william.utils.TransactionManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @author ：lijunxuan
* @date ：Created in 2019/5/27 16:14
* @description ：
* @version: 1.0
*/
@Service
public class AccountServiceImpl implements AccountService {
@Autowired
AccountDao accountDao;
@Override
public void transfer(String FromMoney, String ToMoney, Float money) {
//开启事务：transactionManager
//查询账户名称 两个账户名称
Account FromuserName = accountDao.findByUserName(FromMoney);
Account ToUserName = accountDao.findByUserName(ToMoney);
//修改金额
FromuserName.setMoney(FromuserName.getMoney()-money);
ToUserName.setMoney(ToUserName.getMoney()+money);
//int i=1/0;
//修改账户表
accountDao.Update(FromuserName);
accountDao.Update(ToUserName);
}
}
3.Utils工具类
（1）ConnectionUtils
package com.william.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
/**
* @author ：lijunxuan
* @date ：Created in 2019/5/27 16:50
* @description ：
* @version: 1.0
*/
@Component
public class ConnectionUtils {
private ThreadLocal t1=new ThreadLocal();
@Autowired
DataSource dataSource;
/**
* 用来获取线程中连接对象
* 1， 在第一次访问该方法时， 线程中没有对象，先获取一个，放入线程
*/
public Connection getThreadConnection(){
//获取线程池中的对象
Connection conn = t1.get();
if (conn==null){
try {
conn = dataSource.getConnection();
t1.set(conn);
} catch (SQLException e) {
e.printStackTrace();
}
}
return conn;
}
/**
* 移除线程
*/
public void remove()
{
t1.remove();
}
}
（2）TransactionManager
package com.william.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.sql.SQLException;
/**
* @author ：lijunxuan
* @date ：Created in 2019/5/27 16:50
* @description ：
* @version: 1.0
*/
@Component
public class TransactionManager {
@Autowired
ConnectionUtils connectionUtils;
//开启事务
public void beganTransaction(){
try {
connectionUtils.getThreadConnection().setAutoCommit(false);
} catch (SQLException e) {
e.printStackTrace();
}
}
//提交事务
public void Commit(){
try {
connectionUtils.getThreadConnection().commit();
} catch (SQLException e) {
e.printStackTrace();
}
}
//回滚
public void rollBack(){
try {
connectionUtils.getThreadConnection().rollback();
} catch (SQLException e) {
e.printStackTrace();
}
}
//释放资源
public void release(){
try {
connectionUtils.getThreadConnection().setAutoCommit(true);
connectionUtils.getThreadConnection().close();
connectionUtils.remove();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
4.TestTrasfer测试类
package com.william;
import com.william.service.AccountService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* @author ：lijunxuan
* @date ：Created in 2019/5/27 16:22
* @description ：
* @version: 1.0
*/
@Component
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class TestTrasfer {
@Autowired
AccountService accountService;
@Test
public void testTrasferMoney(){
accountService.transfer("william","william-Li",500f);
}
}