FormServlet.java Source code

Introduction

Here is the source code for FormServlet.java
Source

/* validate.js
    
<script language="JavaScript"> 
function validate(form1)
{
    
for (i = 0; i < form1.length; i++){
    
   if( (form1.elements[i].value == "")  ){
       alert("You must provide a value for the field named: " + form1.elements[i].name)
       return false
       }
    
   }
   return true
    
}
</script>
    
    
*/

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FormServlet extends HttpServlet {

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

        response.setContentType("text/html");
        java.io.PrintWriter out = response.getWriter();
        out.println("<html><head>");

        RequestDispatcher dispatcher = request.getRequestDispatcher("/WEB-INF/validate.js");

        dispatcher.include(request, response);

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

        out.println("<form action =\"" + request.getContextPath()
                + "/displayHeaders.jsp\" onSubmit=\" return validate(this)\">");

        out.println("<table border=\"0\"><tr><td valign=\"top\">");
        out.println("Your name: </td>  <td valign=\"top\">");
        out.println("<input type=\"text\" name=\"username\" 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>");
        out.close();
    }
}