performancehandler.java

java写的blog

/*
 * Created on 2004-10-31
 * Author: Xuefeng, Copyright (C) 2004, Xuefeng.
 */
package org.crystalblog.web.handler;

import javax.servlet.http.*;

import org.springframework.web.servlet.*;

/**
 * To detect the performance.
 * 
 * @author Xuefeng
 */
public class PerformanceHandler implements HandlerInterceptor {

    private long startTime;

    public boolean preHandle(
        HttpServletRequest request,
        HttpServletResponse response,
        Object handler)
        throws Exception
    {
        startTime = System.currentTimeMillis();
        return true;
    }

    public void postHandle(
        HttpServletRequest request,
        HttpServletResponse response,
        Object handler,
        ModelAndView modelAndView)
        throws Exception
    {
        System.out.println("Request time(ms): " + (System.currentTimeMillis()-startTime));
    }

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

}