Spring之XML 配置AOP 事务管理

陶然同学

发布于 2023-02-24 09:39:31

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发布于 2023-02-24 09:39:31

文章被收录于专栏：陶然同学博客

XML中配置AOP

XML中配置事务管理

XML中配置AOP

切面类正常写通知不用加注解

public class MyAspect {

    //前置通知
    public void mybefore(){
        System.out.println("前置通知");
    }

    //后置通知
    public void myaftereturning(Object obj){
        System.out.println("后置通知");
    }

    //环绕通知
    public void myAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        System.out.println("环绕通知11");
        Object proceed = proceedingJoinPoint.proceed();
        System.out.println("环绕通知11");
    }

    //最终通知
    public void myafter(){
        System.out.println("最终通知");
    }

    //异常通知
    public void myafterThrowing(Throwable e){
        System.out.println("异常通知");
        System.out.println(e.getMessage());
    }
}

目标类

public class UserServiceImpl implements UserService {

    public void eat(){
        int i = 1 / 0;
        System.out.println("吃饭");
    }
}

xml：

步骤：

1.配置UserServiceImpl 将UserServcieImpl放入Spring容器

2.配置切面类

3.配置切面切入点通知

<?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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/mvc
                  http://www.springframework.org/schema/mvc/spring-mvc.xsd
                  http://www.springframework.org/schema/aop
                  http://www.springframework.org/schema/aop/spring-aop.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">

    <!--配置userService 将UserServiceImpl放入SpringIoc容器-->
    <bean id = "userService" class = "com.czxy.demo04.service.impl.UserServiceImpl"></bean>

    <!--配置切面类-->
    <bean id = "myAspect" class="com.czxy.demo04.aspect.MyAspect"></bean>


    <!--配置切面-->
    <aop:config>
        <aop:aspect ref = "myAspect">
            <!--切入点-->
            <aop:pointcut id = "myPointcut" expression = "execution(* com.czxy.demo04.service.impl.UserServiceImpl.*(..))"></aop:pointcut>

            <aop:before method = "mybefore" pointcut-ref = "myPointcut"></aop:before>

            <aop:after-returning method="myaftereturning" pointcut-ref="myPointcut" returning="obj"></aop:after-returning>

            <aop:around method="myAround" pointcut-ref="myPointcut"></aop:around>

            <aop:after method="myafter" pointcut-ref="myPointcut"></aop:after>

            <aop:after-throwing method="myafterThrowing" pointcut-ref="myPointcut" throwing="e"></aop:after-throwing>

        </aop:aspect>
    </aop:config>


</beans>

测试类

@RunWith(SpringRunner.class)
@ContextConfiguration(locations = {"classpath:demo04.xml"})
public class TestA {

    @Resource(name = "userService")
    private UserService userService;

    @Test
    public void test01(){
        userService.eat();
    }
}

XML中配置事务管理

转账当出现错误的时候转账失败并且余额不变

xml配置类步骤：

1.加载属性配置文件

2.配置连接池

3.配置sessionFactory

4.扫描dao的包

5.配置service

6.定义事务管理器

7.配置事务属性

8.配置事务切入点

domain：

@Entity(name = "account")
public class Account {
    @Id
    private Integer id;
    private String name;
    private Float money;

mapper：

public interface AccountMapper extends Mapper<Account> {
}

转账类：

public class AccountServiceImpl implements AccountService {

    private AccountMapper accountMapper;

    public void setAccountMapper(AccountMapper accountMapper) {
        this.accountMapper = accountMapper;
    }

    public void change(Integer outId, Integer inId, Float money) {
        Account outAccount = accountMapper.selectByPrimaryKey(outId);
        outAccount.setMoney(outAccount.getMoney() - money);
        accountMapper.updateByPrimaryKey(outAccount);

         int i = 1 / 0;

        Account inAccount = accountMapper.selectByPrimaryKey(inId);
        inAccount.setMoney(inAccount.getMoney() + money);
        accountMapper.updateByPrimaryKey(inAccount);
    }
}

测试类：

@RunWith(SpringRunner.class)
@ContextConfiguration(locations = "classpath:demo05.xml")
public class TestA {

    @Resource(name = "accountService")
    private AccountService accountService;

    @Test
    public void testDemo(){
        accountService.change(1,2,3f);
        System.out.println("转账成功");
    }
}

xml配置类：

<?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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/mvc
                  http://www.springframework.org/schema/mvc/spring-mvc.xsd
                  http://www.springframework.org/schema/aop
                  http://www.springframework.org/schema/aop/spring-aop.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">

    <!-- 1.1 指定配置文件的位置-->
    <context:property-placeholder location="classpath:db.properties"/>

    <!-- 1.2 配置数据源 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!-- 配置初始化大小、最小、最大连连接数量 -->
        <property name="initialSize" value="5"/>
        <property name="minIdle" value="10"/>
        <property name="maxActive" value="20"/>
    </bean>

    <!-- 2.1 sessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="typeAliasesPackage" value="com.czxy.demo05.domain" />
        <property name="configuration">
            <bean class="org.apache.ibatis.session.Configuration">
                <property name="mapUnderscoreToCamelCase" value="true" />
            </bean>
        </property>
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageHelper">
                    <property name="properties">
                        <props>
                            <prop key="dialect">mysql</prop>
                            <prop key="rowBoundsWithCount">true</prop>
                        </props>
                    </property>
                </bean>
            </array>
        </property>
    </bean>

    <!-- 2.2 扫描Dao的包 -->
    <bean class="tk.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--指定会话工厂 -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 指定 mybatis 接口所在的包 -->
        <property name="basePackage" value="com.czxy.demo05.mapper"/>
    </bean>

    <!-- 3 配置service -->
    <bean id="accountService" class="com.czxy.demo05.service.impl.AccountServiceImpl">
        <property name="accountMapper" ref="accountMapper" />
    </bean>

    <!-- 4 配置事务 -->
    <!-- 4.1 定义事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 4.2 配置事务属性 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager" >
        <tx:attributes>
            <tx:method name="change" propagation="REQUIRED"/>
            <tx:method name="*" read-only="true" />
        </tx:attributes>
    </tx:advice>

    <!-- 4.3 配置事务切入点 -->
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.czxy.demo05.service..*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut" />
    </aop:config>

</beans>

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原始发表：2022-08-04，如有侵权请联系 cloudcommunity@tencent.com 删除

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