SpringBoot自定义注解及AOP的开发和使用详解

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

import java.lang.annotation.*;  
@Target(ElementType.METHOD)  
@Retention(RetentionPolicy.RUNTIME)  
@Documented  
public @interface Log {  
    String value() default "";  
}

import org.aspectj.lang.ProceedingJoinPoint;  
import org.aspectj.lang.annotation.*;  
import org.springframework.stereotype.Component;  
@Aspect  
@Component  
public class LogAspect {  
    @Pointcut("@annotation(com.jk.annotation.Log)")  
    public void pointCut(){}  
    @Before("pointCut()")  
    public void before() {  
        System.out.println("前置通知...");  
    }  
    @After("pointCut()")  
    public void after() {  
        System.out.println("后置通知...");  
    }  
    @Around("pointCut()")  
    public void around(ProceedingJoinPoint point) throws Throwable {  
        System.out.println("环绕通知前...");  
        point.proceed();  
        System.out.println("环绕通知后...");  
    }  
}

import com.jk.annotation.Log;  
import org.springframework.web.bind.annotation.GetMapping;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.RestController;  
@RestController  
@RequestMapping("/test")  
public class TestController {  
    @GetMapping  
    @Log  
    public void test() {  
        System.out.println("执行test方法");
    }  
}