package com.FilterTest.Filter;

 import java.io.IOException;

 import javax.servlet.Filter;

 import javax.servlet.FilterChain;

 import javax.servlet.FilterConfig;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletResponse;

 public class TestFilter implements Filter {

     @Override

     public void init(FilterConfig filterConfig) throws ServletException {

         print("init");

     }

     @Override

     public void doFilter(ServletRequest request, ServletResponse response,

             FilterChain chain) throws IOException, ServletException {

         print("do filter");

         chain.doFilter(request, response);

         print("do filter End!");

     }

     @Override

     public void destroy() {

         print("destory!");

     }

     void print(String info){

         System.out.println(info+" Thread Name:"+Thread.currentThread().getName());

     }

 }