spring boot aop

这里要做就是利用aop 来打印请求的日志，返回结果，简单的异常处理

一：使用@Aspect注解创建切面，类名是 RquestAspect

import javax.servlet.http.HttpServletRequest;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
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.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 com.alibaba.fastjson.JSON;
/**
 * 对每个请求进行log打印
 * @author ningque
 *
 */
@Aspect
@Component
public class HttpAspect {

}

二：再RquestAspect中创建切入点

/**
* 扫描so.dian.device.controller 包下所有类，所有有注解@RequestMapping 的方法
*/
@Pointcut("execution(* com.zhangxs.device.controller..*(..)) and @annotation(org.springframework.web.bind.annotation.RequestMapping)")
public void log() {}

三：创建调用方法前的日志打印

@Before("log()")
public void doBefore(JoinPoint joinPoint){
beginTime=System.currentTimeMillis();
HttpServletRequest request=this.getHttpServletRequest();
url=request.getRequestURL().toString();
method=request.getMethod();
args=joinPoint.getArgs();
inputAgrs=new Object[args.length];
for(int i=0;i<args.length;i++) {
if(args[i] instanceof HttpServletRequest) {
//有部分请求参数中会有request，request不能转json 会抛出not in non blocking mode 异常
}else {
inputAgrs[i]=args[i];
}
}
logger.info("开始调用: url={},method={},args={}",url,method,JSON.toJSONString(inputAgrs));
}

四：创建调用方法后的日志打印

@After("log()")
public void doAfter() {
long endTime=System.currentTimeMillis();
logger.info("接口结束调用: url={},method={},调用耗时={}",url,method,endTime-beginTime);
}

五：创建返回结果的日志打印

 @Around("log()")
public Object doAround(ProceedingJoinPoint pjp) {
Object result=null;
try {
result=pjp.proceed();
} catch (Throwable e) {
requestErrLogger.error("接口结束调用: url={},method={},异常信息={}",url,method,e);
e.printStackTrace();
}
logger.info("reponse={}",result);
return result;
}

六：获取request请求

public HttpServletRequest getHttpServletRequest() {
ServletRequestAttributes sa= (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
  HttpServletRequest request =  sa.getRequest();
  return request;
}

控制台打印日志：

2017-11-01-18-10 [http-nio-9090-exec-1] [HttpAspect] [INFO] - 开始调用: url=http://localhost:8080/zhangxs/studentInfo,method=GET,args=[{“testUrl":";https://com.zhangxs.so/hello/p/010000000308208"},null]
2017-11-01-18-10 [http-nio-9090-exec-1] [HttpAspect] [INFO] - reponse={"success":false,"code":0,"msg":"查询信息失败"}
2017-11-01-18-10 [http-nio-9090-exec-1] [HttpAspect] [INFO] - 接口结束调用: url=http://localhost:8080/zhangxs/studentInfo,method=GET,调用耗时=27446