自定义注解用AOP实现接口信息打印

导入boot项目的aop依赖

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

定义注解

import java.lang.annotation.*;

/**
 * web日志注解
 */
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
@Documented
public @interface WebLog {

    /**
     * 日志描述信息
     *
     * @return
     */
    String description() default "";
}

注解实现类

import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.ResponseEntity;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Objects;

@Aspect
@Configuration
@Slf4j
public class WebLogAspect {

    /**
     * 以自定义@WebLog注解为切点
     */
    @Pointcut("@annotation(com.hd.demo.common.aop.WebLog)")
    public void webLog() {
    }

    /**
     * 环绕
     *
     * @return java.lang.Object
     * @params [pjp]
     * @description
     */
    @Around("webLog()")
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
        long startTime = System.currentTimeMillis();
        Object result = pjp.proceed();
        if (!(result instanceof ResponseEntity)) {
            log.info("Response Args  : {}", JSON.toJSONString(result));
            log.info("Time-Consuming : {}", System.currentTimeMillis() - startTime);
        }

        return result;
    }


    /**
     * 在切点之前记录
     *
     * @return void
     * @params [joinPoint]
     * @description
     */
    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) throws Exception {
        // 开始打印请求日志
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = Objects.requireNonNull(attributes).getRequest();
        // 获取 @WebLog 注解的描述信息
        String methodDescription = getAspectLogDescription(joinPoint);
        // 打印请求相关参数
        log.info("======================================== Start ==========================================");
        // 打印请求 url
        log.info("URL            : {}", request.getRequestURL().toString());
        // 打印描述信息
        log.info("Description    : {}", methodDescription);
        // 打印 Http method
        log.info("HTTP Method    : {}", request.getMethod());
        // 打印调用 controller 的全路径以及执行方法
        log.info("Class Method   : {}.{}", joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName());
        // 打印请求的 IP
        log.info("IP             : {}", request.getRemoteAddr());
        // 打印请求入参
        log.info("Request Args   : {}",  JSON.toJSONString(joinPoint.getArgs()));
    }

    /**
     * 获取切面注解的描述
     *
     * @param joinPoint 切点
     * @return 描述信息
     * @throws Exception
     */
    public String getAspectLogDescription(JoinPoint joinPoint) throws Exception {
        String targetName = joinPoint.getTarget().getClass().getName();
        String methodName = joinPoint.getSignature().getName();
        Object[] arguments = joinPoint.getArgs();
        Class targetClass = Class.forName(targetName);
        Method[] methods = targetClass.getMethods();
        StringBuilder description = new StringBuilder();
        for (Method method : methods) {
            if (method.getName().equals(methodName)) {
                Class[] clazzs = method.getParameterTypes();
                if (clazzs.length == arguments.length) {
                    description.append(method.getAnnotation(WebLog.class).description());
                    break;
                }
            }
        }
        return description.toString();
    }
}