spring boot如何使用AOP统一处理web请求

spring boot如何使用AOP统一处理web请求

为了保证服务的高可用，及时发现问题，迅速解决问题，为应用添加log是必不可少的。

但是随着项目的增大，方法增多，每个方法加单独加日志处理会有很多冗余

那在SpringBoot项目中如何统一的处理Web请求日志？

基本思想：

采用AOP的方式，拦截请求，写入日志

AOP 是面向切面的编程，就是在运行期通过动态代理的方式对代码进行增强处理

基于AOP不会破坏原来程序逻辑，因此它可以很好的对业务逻辑的各个部分进行隔离，从而使得业务逻辑各部分之间的耦合度降低，提高程序的可重用性，同时提高了开发的效率。

1.添加依赖

org.springframework.boot

spring-boot-starter-web

org.springframework.boot

spring-boot-starter-aop

引入spring-boot-starter-web 依赖之后无需在引入相关的日志依赖，spring-boot-starter-web中已经集成了slf4j 的依赖

引入spring-boot-starter-aop 依赖之后，AOP 的功能即是启动状态

2.配置

application.properties添加

# AOP

spring.aop.auto=true

spring.aop.proxy-target-class=true

logback-spring.xml，主要是ControllerRequest那部分

info

${CONSOLE_LOG_PATTERN}

UTF-8

${log.path}/debug/debug.log

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n

UTF-8

${log.path}/debug/debug-%d{yyyy-MM-dd}.%i.log

100MB

15

debug

ACCEPT

DENY

${log.path}/info/info.log

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n

UTF-8

${log.path}/info/info-%d{yyyy-MM-dd}.%i.log

100MB

15

info

ACCEPT

DENY

${log.path}/warn/warn.log

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n

UTF-8

${log.path}/warn/warn-%d{yyyy-MM-dd}.%i.log

100MB

15

warn

ACCEPT

DENY

${log.path}/error/error.log

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n

UTF-8

${log.path}/error/error-%d{yyyy-MM-dd}.%i.log

100MB

15

ERROR

ACCEPT

DENY

${log.path}/request/info.log

${log.path}/request/info.log.%d{yyyy-MM-dd}

30

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n

3..实现

实现切面的注解

（1）类注解

A. @Aspect 将一个java类定义为切面类

B. @order(i) 标记切面类的处理优先级，i值越小，优先级别越高。可以注解类,也能注解到方法上

（2）方法注解

A. @Pointcut 定义一个切入点，可以是一个表达式

execution表达式，eg:

任意公共方法的执行

execution(public * *(..))

任何一个以“set”开始的方法的执行

execution(* set*(..))

定义在controller包里的任意方法的执行

execution(public * com.example.demo.controller.*(..))

定义在controller包里的任意方法的执行

execution(public * com.example.demo.controller.*.*(..))

定义在controller包和所有子包里的任意类的任意方法的执行

execution(public * com.example.demo.controller..*.*(..))

B. 实现在不同的位置切入

@Before 在切点前执行方法,内容为指定的切点

@After 在切点后，return前执行

@AfterReturning 切入点在 return内容之后（可用作处理返回值）

@Around 切入点在前后切入内容，并自己控制何时执行切入的内容

@AfterThrowing 处理当切入部分抛出异常后的逻辑

C.@order(i) 标记切点的优先级，i越小，优先级越高

@order(i)注解说明

注解类，i值是，值越小，优先级越高

注解方法，分两种情况

注解的是 @Before 是i值越小，优先级越高

注解的是 @After或@AfterReturning 中，i值越大，优先级越高

具体实现

package com.example.demo.configure;

import org.aspectj.lang.JoinPoint;

import org.aspectj.lang.ProceedingJoinPoint;

import org.aspectj.lang.annotation.*;

import org.aspectj.lang.reflect.MethodSignature;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.core.DefaultParameterNameDiscoverer;

import org.springframework.core.ParameterNameDiscoverer;

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.net.InetAddress;

import java.util.HashMap;

import java.util.Map;

@Aspect

@Component

public class WebRequestLogAspect {

private final Logger loggerController = LoggerFactory.getLogger("ControllerRequest");

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

ThreadLocal startTime = new ThreadLocal<>();

ThreadLocal beanName = new ThreadLocal<>();

ThreadLocal user = new ThreadLocal<>();

ThreadLocal methodName = new ThreadLocal<>();

ThreadLocal params = new ThreadLocal<>();

ThreadLocal remoteAddr = new ThreadLocal<>();

ThreadLocal uri = new ThreadLocal<>();

private static Map getFieldsName(ProceedingJoinPoint joinPoint) {

// 参数值

Object[] args = joinPoint.getArgs();

ParameterNameDiscoverer pnd = new DefaultParameterNameDiscoverer();

MethodSignature signature = (MethodSignature) joinPoint.getSignature();

Method method = signature.getMethod();

String[] parameterNames = pnd.getParameterNames(method);

Map paramMap = new HashMap<>(32);

for (int i = 0; i < parameterNames.length; i++) {

paramMap.put(parameterNames[i], args[i] + "(" + args[i].getClass().getSimpleName() + ")");

}

return paramMap;

}

@Pointcut("execution(public * com.example.demo.controller..*.*(..))")

public void webRequestLog() {

}

/**

* 前置通知，方法调用前被调用

* @param joinPoint

*/

@Before("webRequestLog()")

public void doBefore(JoinPoint joinPoint) {

try {

startTime.set(System.currentTimeMillis());

// 接收到请求，记录请求内容

ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();

HttpServletRequest request = attributes.getRequest();

beanName.set(joinPoint.getSignature().getDeclaringTypeName());

methodName.set(joinPoint.getSignature().getName());

uri.set(request.getRequestURI());

remoteAddr.set(getIpAddr(request));

user.set((String) request.getSession().getAttribute("user"));

} catch (Exception e) {

logger.error("***操作请求日志记录失败doBefore()***", e);

}

}

/**

* 环绕通知,环绕增强，相当于MethodInterceptor

* @param thisJoinPoint

*/

@Around("webRequestLog()")

public Object proceed(ProceedingJoinPoint thisJoinPoint) throws Throwable {

Object object = thisJoinPoint.proceed();

Map fieldsName = getFieldsName(thisJoinPoint);

params.set(fieldsName.toString());

return object;

}

/**

* 处理完请求返回内容

* @param result

*/

@AfterReturning(returning = "result", pointcut = "webRequestLog()")

public void doAfterReturning(Object result) {

try {

long requestTime = (System.currentTimeMillis() - startTime.get()) / 1000;

loggerController.info("请求耗时：" + requestTime + ", uri=" + uri.get() + "; beanName=" + beanName.get() + "; remoteAddr=" + remoteAddr.get() + "; user=" + user.get()

+ "; methodName=" + methodName.get() + "; params=" + params.get() + "; RESPONSE : " + result);

} catch (Exception e) {

logger.error("***操作请求日志记录失败doAfterReturning()***", e);

}

}

/**

* 获取登录用户远程主机ip地址

*

* @param request

* @return

*/

private String getIpAddr(HttpServletRequest request) {

String ip = request.getHeader("x-forwarded-for");

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

ip = request.getHeader("Proxy-Client-IP");

}

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

ip = request.getHeader("WL-Proxy-Client-IP");

}

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

ip = request.getRemoteAddr();

if (ip.equals("127.0.0.1") || ip.equals("0:0:0:0:0:0:0:1")) {

//根据网卡取本机配置的IP

InetAddress inet = null;

try {

inet = InetAddress.getLocalHost();

} catch (Exception e) {

e.printStackTrace();

}

ip = inet.getHostAddress();

}

}

// 多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割

if (ip != null && ip.length() > 15) {

if (ip.indexOf(",") > 0) {

ip = ip.substring(0, ip.indexOf(","));

}

}

return ip;

}

}

4.测试类

package com.example.demo.controller;

import com.alibaba.fastjson.JSONObject;

import com.example.demo.dao.UserRepository;

import com.example.demo.domain.User;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.web.bind.annotation.*;

import java.util.List;

import java.util.Map;

@RestController

public class Demo {

@RequestMapping (value = "test1")

public String test1(@RequestParam(defaultValue = "0") Integer id,@RequestParam(defaultValue = "0")String name){

return id+name;

}

@RequestMapping("hello")

public String hello() {

return "Hello World!";

}

@PostMapping("/updateStatus")

public Object updateStatus(@RequestBody JSONObject jsonParam) {

return jsonParam;

}

}

输出到logs/request/info.log内容

2019-09-11 13:31:45.729 [http-nio-8080-exec-4] INFO ControllerRequest - 请求耗时：0, uri=/test1; beanName=com.example.demo.controller.Demo; remoteAddr=172.27.0.17; user=null; methodName=test1; params={name=abcdef(String), id=123(Integer)}; RESPONSE : 123abcdef

2019-09-11 13:32:16.692 [http-nio-8080-exec-5] INFO ControllerRequest - 请求耗时：0, uri=/updateStatus; beanName=com.example.demo.controller.Demo; remoteAddr=172.27.0.17; user=null; methodName=updateStatus; params={jsonParam={"id":"17","type":3,"status":2}(JSONObject)}; RESPONSE : {"id":"17","type":3,"status":2}

2019-09-11 13:33:32.584 [http-nio-8080-exec-7] INFO ControllerRequest - 请求耗时：0, uri=/hello; beanName=com.example.demo.controller.Demo; remoteAddr=172.27.0.17; user=null; methodName=hello; params={}; RESPONSE : Hello World!

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