使用spring拦截器实现日志管理实例

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));   }} 

<!-- 拦截器配置 --><mvc:interceptors>  <mvc:interceptor>    <mvc:mapping path="/**" />    <bean class="org.xs.demo1.LogInterceptor" />  </mvc:interceptor></mvc:interceptors>