springboot + aspect

第一步导入依赖

        
　<dependency>
　　　　<groupId>aopalliance</groupId>
　　　　<artifactId>aopalliance</artifactId> 
　　　　<version>1.0</version> 
　</dependency>

<dependency>
       <groupId>org.aspectj</groupId>
       <artifactId>aspectjweaver</artifactId>
       <version>1.8.3</version>
</dependency>

第二步写一个切面类

package com.Aspect;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

/**
 * @author xulei
 * @version 1.0
 * @date 2020/3/29 22:12
 */
@Aspect
public class FirstAspect {
    @Before("execution(* com.Dao.*.*(..))")
    public void before(JoinPoint joinPoint){
        System.out.println("切面before方法");
    }
}

第三步写一个配置类（不写配置类无法切面无法生效）

package com.config;

import com.Aspect.FirstAspect;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;

/**
 * @author xulei
 * @version 1.0
 * @date 2020/3/29 22:21
 */
@EnableAspectJAutoProxy
@Configuration
public class AspectConfig {
        @Bean
        public FirstAspect controllerAspect(){
            return  new FirstAspect();
        }
}