使用spring拦截器实现日志管理
使用HandlerInterceptor拦截器,可以拦截请求,实现通用的日志管理操作
一、添加拦截器类
在"src/main/java"代码文件夹的"org.xs.demo1"的包下新建"LogInterceptor.java"类:
/** * Copyright © 2012-2014 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved. */ package org.xs.demo1; import java.text.SimpleDateFormat; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.core.NamedThreadLocal; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; /** * 日志拦截器 * @author ThinkGem */ public class LogInterceptor implements HandlerInterceptor { private final Logger log = LoggerFactory.getLogger(getClass().getName()); private static final ThreadLocal<Long> startTimeThreadLocal = new NamedThreadLocal<Long>("ThreadLocal StartTime"); /** * 预处理 */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { long beginTime = System.currentTimeMillis(); //开始时间 startTimeThreadLocal.set(beginTime); //线程绑定变量(该数据只有当前请求的线程可见) log.info("开始计时: {}", new SimpleDateFormat("hh:mm:ss.SSS").format(beginTime)); return true; } /** * 返回处理 */ @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { if (modelAndView != null){ log.info("ViewName: " + modelAndView.getViewName()); } } /** * 后处理 */ @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // 保存日志 //LogUtils.saveLog(request, handler, ex, null); // 输出日志信息 log.info("访问地址:" + request.getRequestURI() + ",执行方式:" + request.getMethod()); long beginTime = startTimeThreadLocal.get(); //得到线程绑定的局部变量(开始时间) long endTime = System.currentTimeMillis(); //结束时间 log.info("计时结束:{}", new SimpleDateFormat("hh:mm:ss.SSS").format(endTime)); } }
二、修改配置文件
修改spring-mvc.xml件,加入:
<!-- 拦截器配置 --> <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**" /> <bean class="org.xs.demo1.LogInterceptor" /> </mvc:interceptor> </mvc:interceptors>
三、运行测试
访问"http://localhost:8080/demo1/hello/list2"地址
可以看到拦截器中输出的日志信息了
实例代码地址:https://github.com/ctxsdhy/cnblogs-example