loginservlet.java

基于JAVA新闻发部系统

package com.myservlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
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.mybean.admin;
import com.mybean.user;

public class LoginServlet extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		this.doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		request.setCharacterEncoding("gbk");
		response.setCharacterEncoding("gbk");
		PrintWriter out = response.getWriter();
		String loginname=request.getParameter("loginname");
		String password=request.getParameter("password");
		int roleid=Integer.parseInt(request.getParameter("roleid"));
		user us=new user();
		us.setLoginname(loginname);
		us.setPassword(password);
		us.setRoleid(roleid);
		admin ad=new admin();
		ad.setAdminname(loginname);
		ad.setPassword(password);
		ad.setRoleid(roleid);
		HttpSession session=request.getSession();
		session.setAttribute("name", loginname);
		session.setAttribute("roleid", roleid);
		if(us.findUser()||ad.findAdmin())
		{
			if(us.selectUser())
			{
				RequestDispatcher dis=request.getRequestDispatcher("left.jsp");
				dis.forward(request, response);
				session.setAttribute("isLogin", "true");
			}	
			else if(ad.selectAdmin())
				{
		    	RequestDispatcher dis=request.getRequestDispatcher("aleft.jsp");
				dis.forward(request, response);
				session.setAttribute("isLogin", "true");
				}
			else
			{
				response.sendRedirect("error.jsp");
			}
		}
      
//		else if(ad.findAdmin())
//		{
//			if(ad.selectAdmin())
//			{
//	    	RequestDispatcher dis=request.getRequestDispatcher("aleft.jsp");
//			dis.forward(request, response);
//			session.setAttribute("isLogin", "true");
//			}
//			else
//			{
//				response.sendRedirect("error.jsp");
//			}
//		}
		
		out.close();
	}

}