servletlogin.java

JAVA编程百例书中各章节的所有例子的源代码,包括套接字编程

package ch04.section10;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class ServletLogin
    extends HttpServlet {
  private static final String CONTENT_TYPE = "text/html; charset=gb2312";

  //Initialize global variables
  public void init() throws ServletException {
  }

  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    response.setContentType(CONTENT_TYPE);
    PrintWriter out = response.getWriter();
    String s_Name = request.getParameter("Name");
    String s_Password = request.getParameter("Password");
    String s_NextPage = "";
    UserBean ub = new UserBean();
    if (ub.validUser(s_Name, s_Password)) {
      s_NextPage = "/ch04/section10/succed.jsp";
    }
    else {
      s_NextPage = "/ch04/section10/failed.jsp";
    }
    ServletContext sc = getServletContext();
    RequestDispatcher rd = sc.getRequestDispatcher(s_NextPage);
    rd.forward(request, response);
  }

  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    doGet(request, response);
  }

  //Clean up resources
  public void destroy() {
  }
}