loginservlet.java

一个非常简单的mvc留言板MVC框架是STRUTS框架的基础

package com.aptech.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.aptech.bean.User;
import com.aptech.dao.UserDAO;

public class LoginServlet extends HttpServlet {
	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String uname = request.getParameter("uname");
		String upassword = request.getParameter("upassword");
		
		UserDAO ud = new UserDAO();
		User user = ud.login(uname, upassword);
		
		if(user == null){
			request.setAttribute("tip", "登录失败，请注意大小写，或者请注意是否将capslock键打开!");
			request.setAttribute("r", "login.jsp");
		}else{
			HttpSession session = request.getSession();
			session.setAttribute("user", user);
			request.setAttribute("tip", "登录成功！");
		}
		request.getRequestDispatcher("tip.jsp").forward(request, response);
	}

}