Spring事务管理器

public class Bank {
private Integer id;
private String name;
private String manay;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getManay() {
return manay;
}
public void setManay(String manay) {
this.manay = manay;
}
}

public interface IBankDao {
//转出
public int RolloutMoney(String card_code,double money); //转入
public int RollinMoney(String card_code,double money);
}

@Repository
public class IBankDaoImpl implements IBankDao {
//植入JDBC模板
@Resource
private JdbcTemplate jdbcTemplate;
@Override
public int RolloutMoney(String card_code, double money) {
int outconut = jdbcTemplate.update("update bank set card_balance=card_balance-? where card_code=?",money,card_code);
return outconut;
} @Override
public int RollinMoney(String card_code, double money) {
int incount = jdbcTemplate.update("update bank set card_balance=card_balance+? where card_code=?",money,card_code);
return incount;
}
}

public interface IBankService {
//转账的方法
public int transfer(String out_card_code,String in_card_code,double money) throws Exception;
}

@Service("iBankService")
public class IBankServiceImpl implements IBankService {
//植入Dao层对象
@Resource
private IBankDao iBankDao; @Transactional(isolation = Isolation.REPEATABLE_READ,propagation = Propagation.REQUIRED)
@Override
public int transfer(String out_card_code, String in_card_code, double money) throws Exception {
//转出
int out = iBankDao.RolloutMoney(out_card_code,money); //模拟异常
//Spring事务管理会不会对所有异常都会回滚，只能对运行时异常eollback
if (true){
throw new RuntimeException("=============异常=============");
}
//转入
int in=iBankDao.RollinMoney(in_card_code,money);
return out+in;
}
}

<!--加载配置文件-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--Datasource供模板调用
DriverManagerDataSource：spring提供管理数据源的
c3p0数据源 dbcp数据源-->
<bean id="dataSourse" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean> <!--扫描注解：包扫描器-->
<context:component-scan base-package="com.Spring"/> <!--植入JdbcTemplate-->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSourse"/>
</bean> <!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--管理数据源-->
<property name="dataSource" ref="dataSourse"/>
</bean> <!--AOP事务-->
<tx:advice id="transactionAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="trans*" isolation="READ_COMMITTED" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice> <aop:config>
<aop:pointcut id="pointCut" expression="execution(* *..service.impl.*.*(..))"/>
<aop:advisor advice-ref="transactionAdvice" pointcut-ref="pointCut"/>
</aop:config> <!--Spring支持注解式事务配置-->
<tx:annotation-driven/> <!--事务代理工厂Bean-->
<bean id="transactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<!-- 事务管理器-->
<property name="transactionManager" ref="transactionManager"></property>
<!--目标对象-->
<property name="target" ref="iBankService"></property>
<!--设置方法-->
<property name="transactionAttributes">
<props>
<!--方法对应的隔离级别和传播行为-->
<prop key="transfer">PROPAGATION_REQUIRED,ISOLATION_DEFAULT</prop>
</props>
</property>
</bean>

public class TransferTest {
public static void main(String[] args) {
ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
IBankService iBankService = (IBankService)ctx.getBean("transactionProxy"); try {
iBankService.transfer("","",);
}catch (Exception e){
e.printStackTrace();
}
System.out.println("转账成功");
}
}