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; 

/**

 * 日志攔截器

 * @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");
  /** 

   * 預(yù)處理

   */

  @Override

  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

     

    long beginTime = System.currentTimeMillis(); //開(kāi)始時(shí)間 

    startTimeThreadLocal.set(beginTime); //線程綁定變量（該數(shù)據(jù)只有當(dāng)前請(qǐng)求的線程可見(jiàn)） 

    log.info("開(kāi)始計(jì)時(shí): {}", new SimpleDateFormat("hh:mm:ss.SSS").format(beginTime));

     

    return true;

  }

  /**

   * 返回處理

   */

  @Override

  public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    if (modelAndView != null){

      log.info("ViewName: " + modelAndView.getViewName());

    }

  }

  /**

   * 后處理

   */

  @Override

  public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    // 保存日志

    //LogUtils.saveLog(request, handler, ex, null);     

    // 輸出日志信息

    log.info("訪問(wèn)地址：" + request.getRequestURI() + "，執(zhí)行方式：" + request.getMethod());

    long beginTime = startTimeThreadLocal.get(); //得到線程綁定的局部變量（開(kāi)始時(shí)間） 

    long endTime = System.currentTimeMillis(); //結(jié)束時(shí)間 

    log.info("計(jì)時(shí)結(jié)束：{}", new SimpleDateFormat("hh:mm:ss.SSS").format(endTime)); 

  }
} 

<!-- 攔截器配置 -->

<mvc:interceptors>

  <mvc:interceptor>

    <mvc:mapping path="/**" />

    <bean class="org.xs.demo1.LogInterceptor" />

  </mvc:interceptor>

</mvc:interceptors>