为了开发模式下调试接口的便捷性，开发了请求和返回信息打印类，信息会通过log.info方式打印在控制台，首先，需要引入springboot对于AOP的依赖和日志组件log4j2接替springboot默认的log组件。

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

配置一下log4j2，在classpath下闯将log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="fatal">
  <Properties>
    <Property name="baseDir" value="javaCarLogs"/>
  </Properties>

  <Appenders>
    <Console name="Console" target="SYSTEM_OUT">
      <!--控制台只输出level及以上级别的信息（onMatch），其他的直接拒绝（onMismatch） -->
      <ThresholdFilter level="info" onMatch="ACCEPT"
        onMismatch="DENY"/>
      <PatternLayout
        pattern="[%d{MM:dd HH:mm:ss.SSS}] [%level] [%logger{36}] - %msg%n"/>
    </Console>

    <!--debug级别日志文件输出-->
    <RollingFile name="debug_appender" fileName="${baseDir}/debug.log"
      filePattern="${baseDir}/debug_%i.log.%d{yyyy-MM-dd}">
      <!-- 过滤器 -->
      <Filters>
        <!-- 限制日志级别在debug及以上在info以下 -->
        <ThresholdFilter level="debug"/>
        <ThresholdFilter level="info" onMatch="DENY" onMismatch="NEUTRAL"/>
      </Filters>
      <!-- 日志格式 -->
      <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
      <!-- 策略 -->
      <Policies>
        <!-- 每隔一天转存 -->
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
        <!-- 文件大小 -->
        <SizeBasedTriggeringPolicy size="100 MB"/>
      </Policies>
    </RollingFile>

    <!-- info级别日志文件输出 -->
    <RollingFile name="info_appender" fileName="${baseDir}/info.log"
      filePattern="${baseDir}/info_%i.log.%d{yyyy-MM-dd}">
      <!-- 过滤器 -->
      <Filters>
        <!-- 限制日志级别在info及以上在error以下 -->
        <ThresholdFilter level="info"/>
        <ThresholdFilter level="error" onMatch="DENY" onMismatch="NEUTRAL"/>
      </Filters>
      <!-- 日志格式 -->
      <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
      <!-- 策略 -->
      <Policies>
        <!-- 每隔一天转存 -->
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
        <!-- 文件大小 -->
        <SizeBasedTriggeringPolicy size="100 MB"/>
      </Policies>
    </RollingFile>

    <!-- error级别日志文件输出 -->
    <RollingFile name="error_appender" fileName="${baseDir}/error.log"
      filePattern="${baseDir}/error_%i.log.%d{yyyy-MM-dd}">
      <!-- 过滤器 -->
      <Filters>
        <!-- 限制日志级别在error及以上 -->
        <ThresholdFilter level="error"/>
      </Filters>
      <!-- 日志格式 -->
      <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
      <Policies>
        <!-- 每隔一天转存 -->
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
        <!-- 文件大小 -->
        <SizeBasedTriggeringPolicy size="100 MB"/>
      </Policies>
    </RollingFile>
  </Appenders>
  <Loggers>
    <Root level="debug">
      <AppenderRef ref="Console"/>
      <AppenderRef ref="debug_appender"/>
      <AppenderRef ref="info_appender"/>
      <AppenderRef ref="error_appender"/>
    </Root>

  </Loggers>
</Configuration>

实现切面日志打印 WebLogAspect,具体实现如下：

package wang.aweb.childcar.filter;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
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 org.springframework.web.servlet.mvc.condition.RequestConditionHolder;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;

/**
 * 描述：打印请求和响应信息
 */
@Aspect
@Component
public class WebLogAspect {
    private final Logger log=LoggerFactory.getLogger(WebLogAspect.class);
    @Pointcut("execution(public * wang.aweb.childcar.controller.*.*.*(..))")
    public void webLog(){

    }
    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint){
        //收到请求，记录请求内容
        ServletRequestAttributes attributes=(ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request=attributes.getRequest();
        log.info("URL: "+request.getRequestURL().toString());
        log.info("HTTP_METHOD: "+request.getMethod());
        log.info("IP: "+request.getRemoteAddr());
        log.info("CLASS_METHOD: "+joinPoint.getSignature().getDeclaringTypeName()+"."+joinPoint.getSignature().getName());
        log.info("ARGS: "+ Arrays.toString(joinPoint.getArgs()));
    }
    @AfterReturning(returning = "res",pointcut = "webLog()")
    public void doAfterReturning(Object res) throws JsonProcessingException {
        //处理完请求，返回内容
        log.info("RESPONSE: "+  new ObjectMapper()
                .writeValueAsString(res));
    }
}