package com.filter;

import java.io.IOException;
import java.net.URLDecoder;

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;

import com.dao.UserDao;
import com.dao.impl.UserDaoImpl;
import com.entity.User;
import com.jspsmart.upload.Request;
import com.service.UserService;
import com.service.impl.UserServiceImpl;

//Cookie拦截器
public class LoginFilter implements Filter{

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

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
			throws IOException, ServletException {
		// TODO Auto-generated method stub
		System.out.println("登陆拦截器开始执行...");
		HttpServletRequest requset = (HttpServletRequest) arg0;
		HttpServletResponse response = (HttpServletResponse) arg1;
		Cookie[] cookies = requset.getCookies();
		String name = null;
		String pwd = null;
		if(cookies!=null){
			for(Cookie cookie : cookies){
				String cookieName = cookie.getName();
				if("username".equals(cookieName)){
					name = URLDecoder.decode(cookie.getValue(),"UTF-8");
				}else if("password".equals(cookieName)){
					pwd = cookie.getValue();
				}
			}
		}
		if((name!=null&&!("".equals(name)))&&(pwd!=null&&!("".equals(pwd)))){
			UserDao dao = new UserDaoImpl();
			User user = dao.getUserByName(name);
			if(user.getPassword().equals(pwd)){
				requset.getSession().setAttribute("user", user);
				requset.getRequestDispatcher("index.jsp").forward(requset, response);  // 请求响应转发到JSP页面
			}
		}
		System.out.println("登陆拦截器执行完毕...");
		arg2.doFilter(requset, response);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		System.out.println("过滤器初始化。。。");
	}

}