MyServlet.java Source code

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Here is the source code for MyServlet.java

Source

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

public class MyServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, java.io.IOException {

        System.out.println("command: " + request.getParameter("command"));

        response.setContentType("text/html");

        java.io.PrintWriter out = response.getWriter();

        out.println("<html><head>");

        out.println("<title>Help Page</title></head><body>");
        out.println("<h2>Please submit your information</h2>");

        out.println("<form method=\"post\" action =\"" + request.getContextPath() + "/MyServlet\" >");

        out.println("<table border=\"0\"><tr><td valign=\"top\">");
        out.println("Your first name: </td>  <td valign=\"top\">");
        out.println("<input type=\"text\" name=\"firstname\" size=\"20\">");
        out.println("</td></tr><tr><td valign=\"top\">");
        out.println("Your last name: </td>  <td valign=\"top\">");
        out.println("<input type=\"text\" name=\"lastname\" size=\"20\">");
        out.println("</td></tr><tr><td valign=\"top\">");
        out.println("Your email: </td>  <td valign=\"top\">");
        out.println("<input type=\"text\" name=\"email\" size=\"20\">");
        out.println("</td></tr><tr><td valign=\"top\">");

        out.println("<input type=\"submit\" value=\"Submit Info\"></td></tr>");
        out.println("</table></form>");
        out.println("</body></html>");
    }

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

        Enumeration paramNames = request.getParameterNames();

        String parName;

        boolean emptyEnum = false;
        if (!paramNames.hasMoreElements())
            emptyEnum = true;

        response.setContentType("text/html");

        java.io.PrintWriter out = response.getWriter();

        out.println("<html><head>");
        out.println("<title>Submitted Parameters</title></head><body>");

        if (emptyEnum) {
            out.println("<h2>Sorry, the request does not contain any parameters</h2>");
        } else {
            out.println("<h2>Here are the submitted parameter values</h2>");
        }

        while (paramNames.hasMoreElements()) {

            parName = (String) paramNames.nextElement();
            out.println("<strong>" + parName + "</strong> : " + request.getParameter(parName));
            out.println("<br />");
        }

        out.println("</body></html>");

    }
}