使用Spring的拦截器监测每个Controller或方法的执行时长

 package com.wechat.test; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; import java.util.Calendar; import java.util.Date; /** * Created by lenovo on 2017/3/14. */ public class TestInterceptor extends HandlerInterceptorAdapter { private long time; private int openingTime; private int closingTime; private String mappingURL;//利用正则映射到需要拦截的路径 public void setOpeningTime(int openingTime) { this.openingTime = openingTime; } public void setClosingTime(int closingTime) { this.closingTime = closingTime; } public void setMappingURL(String mappingURL) { this.mappingURL = mappingURL; } /** * 1.进入Controller方法之前执行 * @param request * @param response * @param handler * @return 返回值为true时可继续执行Controller，preHandle()和afterCompletion()，为false时停止执行任何方法。 * @throws Exception */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { time = System.currentTimeMillis(); String url=request.getRequestURL().toString(); if(mappingURL==null || url.matches(mappingURL)){ Calendar c=Calendar.getInstance(); c.setTime(new Date()); int now=c.get(Calendar.HOUR_OF_DAY); if(nowclosingTime){ request.setAttribute("msg", "注册开放时间：" + openingTime + "：00-" + closingTime + "：00"); //                request.getRequestDispatcher("/msg.jsp").forward(request, response); return false; } return true; } return true; } /** * 2.Controller方法执行完毕但是未进行视图渲染时执行 * @param request * @param response * @param handler * @param modelAndView * @throws Exception */ @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { super.postHandle(request, response, handler, modelAndView); } /** * 3.视图渲染完成（整个请求结束）执行 * @param request * @param response * @param handler * @param ex * @throws Exception */ @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { System.out.println("请求处理完成啦！用时："+(System.currentTimeMillis() - time)+"ms"); super.afterCompletion(request, response, handler, ex); } }