Spring环绕通知 | 易学教程

public class CustomerDao {
    public void find(){
        System.out.println("查询客户...");
    }

    public void save(){
        System.out.println("保存客户...");
    }

    public void update(){
        System.out.println("修改客户...");
    }

    public void delete(){
        System.out.println("删除客户...");
    }
}

public class MyAroundAdvice implements MethodInterceptor {
    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.println("环绕前增强===================");

        Object obj = invocation.proceed();

        System.out.println("环绕后增强===================");
        return obj;
    }
}

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

    <!--配置目标类============-->
    <bean id="customerDao" class="com.imooc.aop.demo4.CustomerDao"/>

    <!--配置通知============== -->
    <bean id="myAroundAdvice" class="com.imooc.aop.demo4.MyAroundAdvice"/>

    <!--一般的切面是使用通知作为切面的，因为要对目标类的某个方法进行增强就需要配置一个带有切入点的切面-->
    <bean id="myAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
        <!--pattern中配置正则表达式：.任意字符  *任意次数 -->
    <!--<property name="pattern" value=".*save.*"/>-->
        <property name="patterns" value=".*save.*,.*delete.*"/>
    <property name="advice" ref="myAroundAdvice"/>
</bean>

<!-- 配置产生代理 -->
    <bean id="customerDaoProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
        <property name="target" ref="customerDao"/>
        <property name="proxyTargetClass" value="true"/>
        <property name="interceptorNames" value="myAdvisor"/>
    </bean>
</beans>

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext2.xml")
public class SpringDemo4 {

    // @Resource(name="customerDao")
    @Resource(name="customerDaoProxy")
    private CustomerDao customerDao;

    @Test
    public void demo1(){
        customerDao.find();
        customerDao.save();
        customerDao.update();
        customerDao.delete();
    }
}

来源：CSDN

作者：行知天下

链接：https://blog.csdn.net/qq_27248989/article/details/103964782

标签

bean

class