SpringAOP实现方式

SpringAOP实现方式1SpringAOP实现方式2

导入Spring依赖

    
        
        
            org.aspectj
            aspectjweaver
            1.9.4
        
    

模拟用户和实现类

package com.bkms.service;

public interface UserService {
    public void m1();
    public void m2();
    public void m3();
    public void m4();
}

package com.bkms.service;

public class UserServiceImpl implements UserService {
    public void m1() {
        System.out.println("m1");
    }

    public void m2() {
        System.out.println("m2");
    }

    public void m3() {
        System.out.println("m3");
    }

    public void m4() {
        System.out.println("m4");
    }
}

编写切入的方法

package com.bkms.log;

import org.springframework.aop.MethodBeforeAdvice;

import java.lang.reflect.Method;

public class Log implements MethodBeforeAdvice {
    
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        System.out.println("Object "+o.getClass().getName());
        System.out.println("Method "+method.getName()+" has been execution");
    }
}

package com.bkms.log;

import org.springframework.aop.AfterReturningAdvice;

import java.lang.reflect.Method;

public class AfterLog implements AfterReturningAdvice {
    
    public void afterReturning(Object returnValue, Method method, Object[] objects, Object o1) throws Throwable {
        System.out.println("execute "+method.getName()+" return "+returnValue);
    }
}

注册bean，使用API接口

测试

import com.bkms.service.UserService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        //动态代理需要代理接口，不能代理实现类，所以UserService接口作为反射传入并获得接口反射实例
        //注册bean时class需要传入接口实现类，因为接口不能new
        UserService userService = context.getBean("userService", UserService.class);
        userService.m2();
    }
}

项目结构

编写自定义类

package com.bkms.customization;

public class Customization {
    
    public void beforeExecute(){
        System.out.println("before execute");
    }

    
    public void afterExecute(){
        System.out.println("after execute");
    }
}

配置bean