springmvc AOP

package com.howhy;

public interface IUserService {
    void addUser();
    int delUser();
    void updateUser();
}



//UserServiceImpl
package com.howhy;

import org.springframework.stereotype.Component;

@Component("userService")
public class UserServiceImpl implements   IUserService {
    public void addUser() {
        System.out.println(""+1/0);
        System.out.println("add user");
    }

    public int delUser() {
        System.out.println("del user");
        return 0;
    }

    public void updateUser() {
        System.out.println("update user");
    }


}

//Logger class
package com.howhy.utils;

import org.aspectj.lang.ProceedingJoinPoint;
import org.springframework.stereotype.Component;

@Component("logger")
public class Logger {
    public void printLog(){
        System.out.println("before log");
    }
    public void afterLog(){
        System.out.println("after log");
    }
    public void exceptLog(){
        System.out.println("except log");
    }
    public void finallyLog(){
        System.out.println("finally log");
    }

    public Object aroundLog(ProceedingJoinPoint pjp){
            Object obj=null;
        try {
            Object[] args=pjp.getArgs();
            System.out.println("around before");
            obj=pjp.proceed(args);
        } catch (Throwable throwable) {
            throwable.printStackTrace();
        }finally {

        }
        return obj;
    }
}

//aop注解
@Component("logger")
@Aspect
public class Logger {
    @Pointcut("execution(* com.howhy.UserServiceImpl.*(..))")
    private void pt1(){}
    @Before("pt1()")
    public void printLog(){
        System.out.println("before log");
    }
    @AfterReturning("pt1()")
    public void afterLog(){
        System.out.println("after log");
    }
    @AfterThrowing("pt1()")
    public void exceptLog(){
        System.out.println("except log");
    }
    @After("pt1()")
    public void finallyLog(){
        System.out.println("finally log");
    }

    public Object aroundLog(ProceedingJoinPoint pjp){
            Object obj=null;
        try {
            Object[] args=pjp.getArgs();
            System.out.println("around before");
            obj=pjp.proceed(args);
        } catch (Throwable throwable) {
            throwable.printStackTrace();
        }finally {

        }
        return obj;
    }
}

　　

//beans
<?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/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.howhy"></context:component-scan>
    <aop:config>
        <aop:aspect id="logAdiv" ref="logger">
            <aop:before method="printLog" pointcut-ref="pt1"></aop:before>
            <aop:after-returning method="afterLog" pointcut-ref="pt1"></aop:after-returning>
            <aop:after-throwing method="exceptLog"  pointcut-ref="pt1"></aop:after-throwing>
            <aop:after method="finallyLog" pointcut-ref="pt1"></aop:after>
            <aop:pointcut id="pt1" expression="execution(* com.howhy.UserServiceImpl.*(..))"/>
        </aop:aspect>
    </aop:config>

<!-->开启springmvc aop注解<-->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

　　

</beans>

//run class
package com.howhy;

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

public class Demo {
    public static void main(String[] args) {
        ApplicationContext applicationContext= new ClassPathXmlApplicationContext("beans.xml");
        IUserService accoutService=applicationContext.getBean("userService",IUserService.class);
       accoutService.addUser();;
       accoutService.delUser();
       accoutService.updateUser();
    }
}