SpringMVC 利用spring AOP实现每个请求的日志输出

引入aspectj包。

<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.2</version>
</dependency>

在springmvc-servlet.xml中实现对AOP的支持

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">

<aop:aspectj-autoproxy proxy-target-class="true"/>
<bean class="com.yusj.interceptor.LogAspect" />
.
.
.
.
</beans>

注解的方法实现Aspect

import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.Map;

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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import com.google.gson.Gson;

/**
*
*/
@Aspect
public class LogAspect {
private final Logger logger = LoggerFactory.getLogger(this.getClass());

private String requestPath = null ; // 请求地址
private String userName = null ; // 用户名
private Map<?,?> inputParamMap = null ; // 传入参数
private Map<String, Object> outputParamMap = null; // 存放输出结果
private long startTimeMillis = 0; // 开始时间
private long endTimeMillis = 0; // 结束时间

/**
*/
@Before("execution(* com.yusj.controller..*.*(..))")
public void doBeforeInServiceLayer(JoinPoint joinPoint) {
startTimeMillis = System.currentTimeMillis(); // 记录方法开始执行的时间
}

/**
*/
@After("execution(* com.yusj.controller..*.*(..))")
public void doAfterInServiceLayer(JoinPoint joinPoint) {
endTimeMillis = System.currentTimeMillis(); // 记录方法执行完成的时间
this.printOptLog();
}

/**
*/
@Around("execution(* com.yusj.controller..*.*(..))")
public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
/**
* 1.获取request信息
* 2.根据request获取session
* 3.从session中取出登录用户信息
*/
RequestAttributes ra = RequestContextHolder.getRequestAttributes();
ServletRequestAttributes sra = (ServletRequestAttributes)ra;
HttpServletRequest request = sra.getRequest();
// 从session中获取用户信息
String loginInfo = (String) session.getAttribute("username");
if(loginInfo != null && !"".equals(loginInfo)){
userName = operLoginModel.getLogin_Name();
}else{
userName = "用户未登录" ;
}
// 获取输入参数
inputParamMap = request.getParameterMap();
// 获取请求地址
requestPath = request.getRequestURI();

// 执行完方法的返回值：调用proceed()方法，就会触发切入点方法执行
outputParamMap = new HashMap<String, Object>();
Object result = pjp.proceed();// result的值就是被拦截方法的返回值
outputParamMap.put("result", result);

return result;
}

/**
*/
private void printOptLog() {
Gson gson = new Gson(); // 需要用到google的gson解析包
String optTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(startTimeMillis);
logger.info("\n user："+userName
+"  url："+requestPath+"; op_time：" + optTime + " pro_time：" + (endTimeMillis - startTimeMillis) + "ms ;"
+" param："+gson.toJson(inputParamMap)+";"+"\n result："+gson.toJson(outputParamMap));
}
}