I am learning how to use servlet, I want create a session that when one logs in it will say "weclome 'username'" in the welcome page
the first code I wrote (first below), when i click submit it takes me to the next page, but I want to use session to create a msg that will say "welcome username" in that next page. so in the second code i wrote (second below), I am struggling to insert a session that will do that.
- package TestWebApp;
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import java.io.*;
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import java.net.*;
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import javax.servlet.*;
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import javax.servlet.http.*;
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/**
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*
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* @author Administrator
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* @version
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*/
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public class RegLoginServlet extends HttpServlet {
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/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
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* @param request servlet request
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* @param response servlet response
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*/
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protected void processRequest(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html;charset=UTF-8");
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PrintWriter out = response.getWriter();
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out.println("<html>");
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out.println("<head>");
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out.println("<title>Servlet RegLoginServletHW2</title>");
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out.println("</head>");
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out.println("<body>");
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out.println("<form id=login_reg name=login_registration method=post action=CatServletHW2>");
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out.println("<table width=400 border=1 cellpadding=0 cellspacing=0>");
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out.println("<tr><td colspan=2 class=title bgcolor=339900>Log in / Register Account Infomation <td></tr>");
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out.println("<tr width=150 border=1 bgcolor=99ff66><td>Requested user name </td>" +
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"<td ><input type=text name=userName /></td></tr>");
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out.println("<tr width=150 border bgcolor=99ff66><td>Password </td>" +
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"<td ><input type=password name=password/></td></tr>");
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out.println("<tr><td colspan=2 class=title bgcolor=339900>For new user's account, confirm password </td></td></tr>");
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out.println("<tr width=150 border=1 bgcolor=99ff66><td>Confirm password </td>" +
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"<td class=r_table><input type=password name=password_Conf /></td></tr>");
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out.println("<tr><td colspan=2 bgcolor=339900 ><div align=center class=text_click>" +
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"<input type=submit name=Submit value=Submit />" +
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"<input type=reset name=Submit2 value=Reset />" +
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"</div></td></tr>");
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out.println("</table>");
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out.println("</body>");
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out.println("</html>");
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out.close();
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}
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}
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***********************************************
second code
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package TestWebApp;
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import java.io.*;
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import javax.servlet.*;
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import javax.servlet.http.*;
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import java.util.*;
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public class RegLoginServlet extends HttpServlet {
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public void doGet(HttpServletRequest request,
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HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html");
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HttpSession session = request.getSession();
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String heading;
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Integer accessCount =
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(Integer)session.getAttribute("accessCount");
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if (accessCount == null) {
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accessCount = new Integer(0);
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heading = "Welcome, Newcomer";
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} else {
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heading = "Welcome Back";
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accessCount = new Integer(accessCount.intValue() + 1);
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}
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out.println("<html>");
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out.println("<head>");
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out.println("<title>Servlet RegLoginServletHW2</title>");
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out.println("</head>");
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out.println("<body>");
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out.println("<form id=login_reg name=login_registration method=post action=CatServletHW2>");
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out.println("<table width=400 border=1 cellpadding=0 cellspacing=0>");
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out.println("<tr><td colspan=2 class=title bgcolor=339900>Log in / Register Account Infomation <td></tr>");
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out.println("<tr width=150 border=1 bgcolor=99ff66><td>Requested user name </td>" +
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"<td ><input type=text name=userName /></td></tr>");
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out.println("<tr width=150 border bgcolor=99ff66><td>Password </td>" +
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"<td ><input type=password name=password/></td></tr>");
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out.println("<tr><td colspan=2 class=title bgcolor=339900>For new user's account, confirm password </td></td></tr>");
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out.println("<tr width=150 border=1 bgcolor=99ff66><td>Confirm password </td>" +
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"<td class=r_table><input type=password name=password_Conf /></td></tr>");
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out.println("<tr><td colspan=2 bgcolor=339900 ><div align=center class=text_click>" +
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"<input type=submit name=Submit value=Submit />" +
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"<input type=reset name=Submit2 value=Reset />" +
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"</div></td></tr>");
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out.println("</table>");
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out.println("</body>");
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out.println("</html>");
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out.close();
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}
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}
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