package com.imooc.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;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class filterTest implements Filter{

@Override

public void destroy() {

// TODO Auto-generated method stub

}

@Override

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)

throws IOException, ServletException {

//进行强制转换

HttpServletRequest rqu=(HttpServletRequest)request;

HttpServletResponse res=(HttpServletResponse)response;

String uri=rqu.getRequestURL().toLowerCase();

if(uri.startsWith("/pc") || uri.startsWith("/pc")) {

chain.doFilter(request, response);

}else {

String client=rqu.getReader("user-agent");

String finnal="";

if(client.indexOf("iphone") || client.indexOf("android")) {

finnal="/phone"+uri;

res.sendRedirect(finnal);

}else {

finnal="/pc"+uri;

res.sendRedirect(finnal);

}

}

}

@Override

public void init(FilterConfig arg0) throws ServletException {

// TODO Auto-generated method stub

}

}