声明式事务管理 基于注解
在配置文件中需要开启注解驱动<tx:annotation-driven transaction-manager="transactionManager"/>；在业务层类的加上@transactional注解
这种事务管理方式非常简单，但是注加载业务层类中，对于后期的维护没有给予AspectJ方式的事务管理简单。
dao层
/**
* @author AT
* 转账dao层
*/
public interface AccountDao {
/**
* 转出钱
* @param outer
* @param money
*/
public void remove(String outer,Double money);
/**
* 转入钱
* @param input
* @param money
*/
public void add(String input,Double money);
}
dao层实现类
/**
* 转账dao层实现
*/
public class AccountDaoimpl extends JdbcDaoSupport implements AccountDao{
/**
* 转出钱
* @param outer
* @param money
*/
@Override
public void remove(String outer, Double money) {
String sql = "update account set money = money - ? where name = ?";
this.getJdbcTemplate().update(sql, money,outer);
}
/**
* 转入钱
* @param input
* @param money
*/
@Override
public void add(String input, Double money) {
String sql = "update account set money = money + ? where name = ?";
this.getJdbcTemplate().update(sql, money,input);
}
}
service业务层
/**
* @author AT
* 转账业务接口
*/
public interface AccountSevice {
public void transfer(String input,String out,Double money);//消费
}
service业务层实现类
/**
* @author AT
* 编程式事务管理
*
* propagation 事务的传播行为
* isolation 事务的隔离级别
* readOnly 只读
* rollbackFor 发生该异常回滚
* noRollbackFor 发生该异常不回滚
* noRollbackForClassName 发生指定异常不回滚
*/
@Transactional(propagation=Propagation.REQUIRED,isolation=Isolation.DEFAULT,readOnly=false)
public class AccountServiceImpl implements AccountSevice { @Resource(name="accountDao")
private AccountDao accountDao; @Override
public void transfer(final String input, final String out,final Double money) {
accountDao.remove(out, money);
// int a = 1/0;
accountDao.add(input, money);
} public void setAccountDao(AccountDao accountDao) {
this.accountDao = accountDao;
}
}
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 引入外部属性文件 -->
<context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置C3P0连接池 -->
<bean id="datasource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean> <!-- dao层和业务的类 -->
<bean id="accountDao" class="com.sdf.spring03.AccountDaoimpl">
<property name="dataSource" ref="datasource"></property>
</bean>
<bean id="accountService" class="com.sdf.spring03.AccountServiceImpl">
<property name="accountDao" ref="accountDao"/>
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="datasource"/>
</bean> <!-- 开启注解事务 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
测试类
/**
* @author AT
* 测试转账信息 声明式事务管理 基于注解的管理方式
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext03.xml")
public class AccountTest {
@Resource(name="accountService")
private AccountSevice accountService; @Test
public void test01(){
accountService.transfer("A", "B", 300d);
}
public void setAccountService(AccountSevice accountService) {
this.accountService = accountService;
}
}