loginservlet.java

通讯录

package cn.com.txl.servlet;

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 cn.com.txl.jdbc.DBbean;
import cn.com.txl.vo.UserInfo;

public class LoginServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public LoginServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * 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 {

	}

	/**
	 * 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");
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		UserInfo userinfo = new UserInfo();
		userinfo.setUsername(username);
		userinfo.setPassword(password);
		DBbean dbbean = new DBbean();
		userinfo = dbbean.findUserInfo(userinfo);
		dbbean.dbclose();
		if(userinfo.getId()>0){
			request.getSession().setAttribute("username", username);
			request.getSession().setAttribute("uid",new String().valueOf(userinfo.getId()));
			request.getSession().setAttribute("login", "true");
			response.sendRedirect("./txl/index.jsp");
			return;
		}else{
			   request.setAttribute("error","登陆失败");
			   RequestDispatcher rd = request.getRequestDispatcher("/errorpage/error.jsp");
			   rd.forward(request, response);
			   return;	
		}
		

	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}