spring事务管理，xml配置aop事务和注解配置aop事务

Posted 2020-10-04 发福大叔

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xml配置和注解配合共同代码

AccountService.java

public interface AccountService {
    
    //转账方法
    void transfer(Integer from,Integer to,Double money);
    
}

AccountServiceImpl.java

xml配置aop事务的AccountServiceImpl.java

public class AccountServiceImpl implements AccountService {

    private AccountDao ad ;
    
    @Override
    public void transfer(final Integer from,final Integer to,final Double money) {
        //减钱
        ad.decreaseMoney(from, money);
        int i = 1/0;
        //加钱
        ad.increaseMoney(to, money);
    }

    public void setAd(AccountDao ad) {
        this.ad = ad;
    }

}

注解配置aop事务的AccountServiceImpl.java

@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true)
public class AccountServiceImpl implements AccountService {

    private AccountDao ad ;
    
    @Override
    @Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false)
    public void transfer(final Integer from,final Integer to,final Double money) {
        //减钱
        ad.decreaseMoney(from, money);
        int i = 1/0;
        //加钱
        ad.increaseMoney(to, money);
    }

    public void setAd(AccountDao ad) {
        this.ad = ad;
    }

}

AccountDao.java

public interface AccountDao {
    
    //加钱
    void increaseMoney(Integer id,Double money);
    //减钱
    void decreaseMoney(Integer id,Double money);
}

AccountDaoImpl.java

public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao  {

    @Override
    public void increaseMoney(Integer id, Double money) {
        //JdbcTemplate：spring整合jdbc操作数据库的类
        getJdbcTemplate().update("update t_account set money = money+? where id = ? ", money,id);
    }

    @Override
    public void decreaseMoney(Integer id, Double money) {
        getJdbcTemplate().update("update t_account set money = money-? where id = ? ", money,id);
    }

}

xml配置aop事务的applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.springframework.org/schema/beans" 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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">

    <!-- 指定spring读取db.properties配置 -->
    <context:property-placeholder location="classpath:db.properties" />
    
    <!-- 1.将连接池 -->
    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!-- 事务核心管理器,封装了所有事务操作. 依赖于连接池 -->
    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 配置事务通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 以方法为单位,指定方法应用什么事务属性 isolation:隔离级别 propagation:传播行为 read-only:是否只读 -->
            <tx:method name="save*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
            <tx:method name="persist*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
            <tx:method name="update*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
            <tx:method name="modify*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
            <tx:method name="delete*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
            <tx:method name="remove*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
            <tx:method name="get*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="true" />
            <tx:method name="find*" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="true" />
            <tx:method name="transfer" isolation="REPEATABLE_READ"
                propagation="REQUIRED" read-only="false" />
        </tx:attributes>
    </tx:advice>

    <!-- 配置织入 -->
    <aop:config>
        <!-- 配置切点表达式 -->
        <aop:pointcut expression="execution(* cn.itcast.service.*ServiceImpl.*(..))" id="txPc" />
        <!-- 配置切面 : 通知+切点 advice-ref:通知的名称 pointcut-ref:切点的名称 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
    </aop:config>

    <!-- 2.Dao -->
    <bean name="accountDao" class="cn.itcast.dao.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    
    <!-- 3.Service -->
    <bean name="accountService" class="cn.itcast.service.AccountServiceImpl">
        <property name="ad" ref="accountDao"></property>
    </bean>

</beans>

注解配置aop事务的applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.springframework.org/schema/beans" 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-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd ">

    <!-- 指定spring读取db.properties配置 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!-- 1.将连接池 -->
    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!-- 事务核心管理器,封装了所有事务操作. 依赖于连接池 -->
    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 开启使用注解管理aop事务 -->
    <tx:annotation-driven />

    <!-- 2.Dao -->
    <bean name="accountDao" class="cn.itcast.dao.AccountDaoImpl">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!-- 3.Service -->
    <bean name="accountService" class="cn.itcast.service.AccountServiceImpl">
        <property name="ad" ref="accountDao"></property>
    </bean>

</beans>

测试类Demo.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class Demo {
    @Resource(name="accountService")
    private AccountService as;
    
    @Test
    public void fun1(){
        
        as.transfer(1, 2, 100d);
        
    }
}

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