controlservlet.java

本例子用的是MyEclipse开发环境

package edu.hbut.servlet;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import edu.hbut.bean.MySQLDAOBean;

public class ControlServlet extends HttpServlet {

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		String uid=request.getParameter("uid");
		String password=request.getParameter("password");
		
		MySQLDAOBean dao=new MySQLDAOBean();
		String[] usertbl=dao.query(uid);
		
		if(uid.equals(usertbl[0]) && password.equals(usertbl[2])){
			request.setAttribute("uid", uid);
			request.setAttribute("username",usertbl[1]);
			request.setAttribute("isLogin", "true");
			
			RequestDispatcher dispatcher=this.getServletContext().getRequestDispatcher("/welcome.jsp");
			dispatcher.forward(request,response);
		}else{
			RequestDispatcher dispatcher=this.getServletContext().getRequestDispatcher("/error.jsp");
			dispatcher.forward(request,response);
		}
		
	}

}