AOP Before Advice After Advice Around Advice Throw Advice

Before Advice:

package com.hwp.aop.adviceDemo;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class BeforeAdviceDemo implements MethodBeforeAdvice {

    public void before(Method method, Object[] args, Object target)
            throws Throwable {
        System.out.println("在方法运行前，先运行");
    }
    
}

After Advice:

package com.hwp.aop.adviceDemo;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;

public class AfterAdviceDemo implements AfterReturningAdvice{

    public void afterReturning(Object arg0, Method arg1, Object[] arg2,
            Object arg3) throws Throwable {
        System.out.println("方法执行后.");
        
    }
    
}

Round Advice:

package com.hwp.aop.adviceDemo;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class AroundAdviceDemo implements MethodInterceptor {

    public Object invoke(MethodInvocation arg0) throws Throwable {
        System.out.println("在round方法里，方法开始前..");
        Object result = null;
        try {
            result = arg0.proceed();
        } finally {
            System.out.println("在round方法里，方法结束后");
        }
        return result;
    }

}

Throw Advice:

package com.hwp.aop.adviceDemo;

import java.lang.reflect.Method;

import org.springframework.aop.ThrowsAdvice;

public class ThowAdviceDemo implements ThrowsAdvice {
    public void afterThrowing(Method method, Object[] args, Object target,
            Throwable subclass) {
        System.out.println("异常抛出后..");
    }

}

beans.xml:

<?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-2.0.xsd">
    <bean id="logBeforeAdvice"
        class="com.hwp.aop.adviceDemo.BeforeAdviceDemo" />
    <bean id="logAfterAdvice"
        class="com.hwp.aop.adviceDemo.AfterAdviceDemo" />
    <bean id="logRoundAdvice"
        class="com.hwp.aop.adviceDemo.AroundAdviceDemo" />
    <bean id="throwAdvice"
        class="com.hwp.aop.adviceDemo.ThowAdviceDemo" />
    <bean id="helloSpeaker" class="com.hwp.aop.adviceDemo.HelloSpeaker" />
    <bean id="helloProxy"
        class="org.springframework.aop.framework.ProxyFactoryBean">
        <property name="proxyInterfaces"
            value="com.hwp.aop.adviceDemo.IHello" />
        <property name="target" ref="helloSpeaker" />
        <property name="interceptorNames">
            <list>
                <value>logBeforeAdvice</value>
                <value>logAfterAdvice</value>
                <value>logRoundAdvice</value>
                <value>throwAdvice</value>
            </list>
        </property>
    </bean>
</beans>

Demo:

package com.hwp.aop.adviceDemo;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringAOPDemo {
    public static void main(String[] args){
        ApplicationContext context = 
            new ClassPathXmlApplicationContext("beans-beforeAdvice.xml");
        IHello helloProxy = (IHello) context.getBean("helloProxy");
        try{
            helloProxy.hello("惠万鹏");
        }catch(Exception e){
            //e.printStackTrace();
        }
    }
}

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