解析springboot集成AOP实现日志输出的方法

<dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-starter-aop</artifactId>

</dependency>

import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.JSONObject;

import io.swagger.annotations.ApiOperation;

import org.aspectj.lang.JoinPoint;

import org.aspectj.lang.Signature;

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.aspectj.lang.reflect.MethodSignature;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.stereotype.Component;

import org.springframework.web.context.request.RequestAttributes;

import org.springframework.web.context.request.RequestContextHolder;

import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

import java.util.Arrays;

  /**

  * 日志切面工具

  * @author tongyao

  */

@Aspect

@Component

public class LogAspect {

     private final Logger logger = LoggerFactory.getLogger(LogAspect. class );

     /**

      * 定义切入点 就是需要拦截的切面

      */

     @Pointcut ( "execution(public * cn.com.antMap.tree.controller.*.*(..))" )

     public void controllerMethod() {}

     /**

      * 进入方法请求执行前

      *

      * @param joinPoint

      * @throws Exception

      */

     @Before ( "controllerMethod()" )

     public void LogRequestInfo(JoinPoint joinPoint) {

         RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();

         HttpServletRequest request = ((ServletRequestAttributes)requestAttributes).getRequest();

         StringBuilder requestLog = new StringBuilder();

         Signature signature = joinPoint.getSignature();

         // 打印请求内容

         logger.info( "===============请求内容开始===============" );

         logger.info( "请求地址:" + request.getRequestURL().toString());

         logger.info( "请求IP:" + request.getRemoteAddr());

         logger.info( "请求方式:" + request.getMethod());

         logger.info( "请求类方法:" + joinPoint.getSignature());

         logger.info( "请求类方法参数值:" + Arrays.toString(joinPoint.getArgs()));

         // 处理请求参数

         String[] paramNames = ((MethodSignature) signature).getParameterNames();

         Object[] paramValues = joinPoint.getArgs();

         int paramLength = null == paramNames ? 0 : paramNames.length;

         if (paramLength == 0 ) {

             requestLog.append( "请求参数 = {} " );

         } else {

             requestLog.append( "请求参数 = [" );

             for ( int i = 0 ; i < paramLength - 1 ; i++) {

                 requestLog.append(paramNames[i]).append( "=" ).append(JSONObject.toJSONString(paramValues[i])).append( "," );

             }

             requestLog.append(paramNames[paramLength - 1 ]).append( "=" ).append(JSONObject.toJSONString(paramValues[paramLength - 1 ])).append( "]" );

         }

         logger.info( "请求参数明细:" +requestLog.toString());

         logger.info( "===============请求内容结束===============" );

     }

     /**

      * 进入方法请求执行后

      *

      * @param o

      * @throws Exception

      */

     @AfterReturning (returning = "o" , pointcut = "controllerMethod()" )

     public void logResultVOInfo(Object o){

         logger.info( "--------------返回内容开始----------------" );

         logger.info( "Response内容:" + JSON.toJSONString(o));

         logger.info( "--------------返回内容结束----------------" );

     }

     /**

      * 该切面发生异常信息时进行拦截

      * @param joinPoint

      * @param ex

      */

     @AfterThrowing (pointcut = "controllerMethod()" , throwing = "ex" )

     public void doAfterThrowing(JoinPoint joinPoint, Exception ex) {

         String methodName = joinPoint.getSignature().getName();

         List<Object> args = Arrays.asList(joinPoint.getArgs());

         System.out.println( "连接点方法为：" + methodName + ",参数为：" + args + ",异常为：" + ex);

     }

}