SpringAOP通知(二)

XML配置形式

准备

目标类接口

public interface AopTest {public String AopTestPrint();
}

目标类实现

@Component
public class AopTestImpl implements AopTest {public String AopTestPrint() {System.out.println("invoke  AopTestPrint no arg method");return null;}
}

切面实现类

@Component
public class AspectsTest {
}

基础SpringXML配置

<?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:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!-- 需要引入aop和context 的约束 --><!-- 开启包扫描 --><context:component-scan base-package="com.test.springdome01"></context:component-scan><aop:config><!-- 定义切面 --><aop:aspect ref="aspectsTest"><!-- 其中定义通知和切点 --></aop:aspect></aop:config>
</beans>

前置通知:Before

切面实现类添加前置通知

 public void aopBefore(){System.out.println("invoke aopBefore method");}

xml增加前置通知

<aop:before method="aopBefore" pointcut="execution(String com.test.springdome01.AopTest.AopTestPrint(..))"></aop:before>

后置通知:After

切面实现类添加后置通知

public void aopAfter(){System.out.println("invoke aopAfter method");}

xml增加后置通知

<aop:after method="aopAfter" pointcut="execution(String com.test.springdome01.AopTest.AopTestPrint(..))"></aop:after>

返回通知:AfterRuturning

切面实现类添加返回通知

public void aopAfterReturning(){System.out.println("invoke aopAfterReturning method");}

xml增加返回通知

<aop:after-returning method="aopAfterReturning" pointcut="execution(String com.test.springdome01.AopTest.AopTestPrint(..))"></aop:after-returning>

异常通知:AfterThrowing

切面实现类添加异常通知

public void aopAfterThrowing(){System.out.println("invoke aopAfterThrowing method");}

xml增加异常通知

<aop:after-throwing method="aopAfterThrowing" pointcut="execution(String com.test.springdome01.AopTest.AopTestPrint(..))"></aop:after-throwing>

目标类中方法添加一个异常

int i = 1/0;

环绕通知:Around

切面实现类添加环绕通知

 public void aopAround(ProceedingJoinPoint pj) throws Throwable {System.out.println("invoke aopAround method1");pj.proceed();pj.proceed();System.out.println("invoke aopAround method2");}

xml增加环绕通知

<aop:around method="aopAround" pointcut="execution(String com.test.springdome01.AopTest.AopTestPrint(..))"></aop:around>