springboot通过aop自定义注解@Log实现日志打印

效果图

实操步骤

注意，本代码在springboot环境下运行，jdk1.8

1.引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
    <groupId>org.jodd</groupId>
    <artifactId>jodd</artifactId>
    <version>3.3.7</version>
</dependency>

2.自定义日志注解

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * 日志注解
 * @author woniu
 */
@Retention(RetentionPolicy.RUNTIME) //注解在源码、字节码、运行期间都存在
@Target({ElementType.METHOD}) //作用在方法上
public @interface WoniuLog {
}

3.编写日志切面类

import com.alibaba.fastjson.JSONArray;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
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.Optional;

import static jodd.util.MimeTypes.MIME_APPLICATION_JSON;

/**
 * 日志切面类
 * @author woniu
 */
@Aspect //代表这是一个切面类
@Component //注入到spring ioc
public class WoniuLogAspect {


    private static final Logger log = LoggerFactory.getLogger(WoniuLogAspect.class);


    public WoniuLogAspect() {
    }

    /**
     * 前置通知：
     * @annotation(WoniuLog) 表示切面只对加了@WoniuLog的方法生效
     */
    @Before("@annotation(WoniuLog)")
    public void doBefore(JoinPoint joinPoint) {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        if (requestAttributes != null) {
            HttpServletRequest request = requestAttributes.getRequest();
            String contentType = request.getContentType();
            //只有contentType=application/json 的才加日志打印
            if (StringUtils.isNotEmpty(contentType)&&contentType.contains(MIME_APPLICATION_JSON)) {
                Class<?> clazz = joinPoint.getTarget().getClass();
                Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
                log.info("------------------------------------------AOP日志start--------------------------------------------------------");
                log.info("[AOP日志]:类名:{}", clazz.getName());
                log.info("[AOP日志]:方法名:{}", method.getName());
                Optional.ofNullable(joinPoint.getArgs()).ifPresent(x -> {
                    for (Object arg : x) {
                        String temp = JSONArray.toJSONString(x);
                        log.info("[AOP日志]:方法入参:{}", temp);
                    }
                });
                log.info("------------------------------------------AOP日志end--------------------------------------------------------");
            }
        }


    }
  }

4.UserController

@ApiOperation(value = "查询分页列表")
@PostMapping("/pageList")
@WoniuLog
public Result<PageResult<UserRespVo>> pageList(@RequestBody UserReqVo reqVo) {
    PageResult<UserRespVo> result = userService.findList(reqVo);
    return Result.ok(result);
}

5.运行