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.Cookie;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
public class IndexFilter implements Filter {  
  
    public void destroy() {  
        // TODO Auto-generated method stub  
  
    }  
  
    public void doFilter(ServletRequest arg0, ServletResponse arg1,  
            FilterChain arg2) throws IOException, ServletException {  
        HttpServletRequest request = (HttpServletRequest) arg0;  
        HttpServletResponse response = (HttpServletResponse) arg1;  
        Cookie[] cookies = request.getCookies();  
        String[] cooks = null;  
        String username = null;  
        String password = null;  
        if (cookies != null) {  
            for (Cookie coo : cookies) {  
                String aa = coo.getValue();  
                cooks = aa.split("==");  
                if (cooks.length == 2) {  
                    username = cooks[0];  
                    password = cooks[1];  
                }  
            }  
        }  
        if (LoginService.login(username, password)) {  
            request.getSession().setAttribute("username",username);  
            response.sendRedirect("main.jsp");  
            //request.getRequestDispatcher("/main.jsp").forward(request, response);  
        }else{  
            arg2.doFilter(request,response );  
        }  
      
  
    }  
  
    public void init(FilterConfig arg0) throws ServletException {  
        // TODO Auto-generated method stub  
  
    }  
  
}