package com.chinamobile.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;
import javax.servlet.http.HttpSession;

public class AuthorFilter implements Filter{

	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest httpRequest=(HttpServletRequest) request;
		HttpServletResponse httpResponse=(HttpServletResponse) response;
		HttpSession httpSession=httpRequest.getSession();
		
		if(httpSession.getAttribute("operator")==null){
			httpRequest.getRequestDispatcher("index.jsp").forward(httpRequest, httpResponse);
		}else{
			chain.doFilter(request, response);
		}
		
	}

	public void init(FilterConfig filterConfig) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}