Spring aop注解方式和xml配置方式

1. 需要加入jar包

cglib.jar   aspectjweaver.jar   aspectjrt.jar   aopalliance-1.0.jar

2.aop理解

 

3. 注解方式

（1）. 接口BusinessService

package com.cn.service;

public interface BusinessService {

	public void save(String name);

	public void update(String name, Integer id);

	public String getName(Integer id);

}

 （2）.類BusinessServiceImpl實現BusinessService接口

package com.cn.service;

public class BusinessServiceImpl implements BusinessService{

	public String getName(Integer id) {
		// TODO Auto-generated method stub
		System.out.println("我是save()方法");
		return "myname";
	}

	public void save(String name) {
		// TODO Auto-generated method stub
		System.out.println("我是save()方法");
	}

	public void update(String name, Integer id) {
		// TODO Auto-generated method stub
		System.out.println("我是update()方法");
	}

}

 （3）.定義面向切面的類MyInterceptor

package com.cn.service;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class MyInterceptor {
	@Pointcut("execution(* com.cn.service.*.save*(..))")
         //第一個* 說明方法的類型
         //第二個* 說明包下的所有的類  如果是包下類和自包中的類* com.cn..*.save*(..))
         //(..)方法中的參數
      	private void anyMethod() {
	}// 定義一個切入點

	@Pointcut("execution(* com.cn.service.*.update*(..))")
	private void doMethod() {
	}// 定義一個切入點

	@Before("anyMethod()&&args(name)")
	public void doAccessCheck(String name) {
		System.out.println(name);
		System.out.println("前置通知");
	}

	/* @AfterReturning("anyMethod()") */
	@AfterReturning("anyMethod()")
	public void doAfter() {
		System.out.println("后置通知");
	}

	@After("anyMethod()")
	public void after() {
		System.out.println("最終通知");
	}

	@AfterThrowing("anyMethod()")
	public void doAfterThrow() {
		System.out.println("例外通知");
	}

	@Around("anyMethod()")
	public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {
		System.out.println("進入環繞通知");
		Object object = pjp.proceed();// 執行該方法
		System.out.println("退出方法");
		return object;
	}

	@Around("doMethod()")
	public Object doBasic(ProceedingJoinPoint pjp) throws Throwable {
		System.out.println("進入環繞通知...");
		Object object = pjp.proceed();// 執行該方法
		System.out.println("退出方法...");
		return object;
	}

}

 （4）.測試類

package com.cn.service;

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

public class AopTest {

	public static void main(String args[]) {
		ApplicationContext ctx = new ClassPathXmlApplicationContext(
				"applicationContext.xml");
		BusinessService service = (BusinessService) ctx.getBean("service");
		service.save("555");
		service.update("123", 589);
	}

}

 運行結果：

555
前置通知
進入環繞通知
我是save()方法
后置通知
退出方法
最終通知
進入環繞通知...
我是update()方法
退出方法...

 3.xml方式

<?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:aop="http://www.springframework.org/schema/aop"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
                        http://www.springframework.org/schema/aop 
                         http://www.springframework.org/schema/aop/spring-aop.xsd">
     <aop:config>
       <aop:aspect id="TestAspect" ref="myInterceptor">  
            <aop:pointcut id="servicem" expression="execution(* com.cn.service.BusinessService.*(..))" />   
            <aop:before pointcut-ref="servicem" method="doAccessCheck"/>  
            <aop:after  pointcut-ref="servicem" method="after"/>
            <aop:around  pointcut-ref="servicem" method="doBasicProfiling"/>
            <aop:after-throwing  pointcut-ref="servicem" method="doAfterThrow" throwing="ex"/>     
        </aop:aspect>  
    </aop:config>        
   <bean id="myInterceptor" class="com.cn.service.MyInterceptor"/>  
   <bean id="service"    class="com.cn.service.BusinessServiceImpl"></bean> 
</beans>  

package com.cn.service;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;


public class MyInterceptor {
    

    public void doAccessCheck(JoinPoint jp) {
        //System.out.println(jp.getTarget().getClass().getName());
        System.out.println("前置通知");
    }

    /* @AfterReturning("anyMethod()") */
    
    public void doAfter(JoinPoint jp) {
        System.out.println("后置通知");
    }

    
    public void after(JoinPoint jp) {
        System.out.println("最終通知");
    }

    
    public void doAfterThrow(JoinPoint jp,Throwable ex) {
        System.out.println("例外通知");
    }


    public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("進入環繞通知");
        Object object = pjp.proceed();// 執行該方法
        System.out.println("退出方法");
        return object;
    }

    
    public Object doBasic(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("進入環繞通知...");
        Object object = pjp.proceed();// 執行該方法
        System.out.println("退出方法...");
        return object;
    }

}