hwo to pass values from list box to servlet

**omarali** · Jan 19th, 2010, 06:18 PM

Hi
I did use getValues method, but it does not work. Could you please help

the error I did get is:

java.lang.ArrayIndexOutOfBoundsException: 1
email.DisplayMusicChiocesServlet.doPost(DisplayMusicChiocesServlet.java:57)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

Code:

package email;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//import business.User;

/**
 *
 * @author Omar
 */
public class DisplayMusicChiocesServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        String firstName =request.getParameter("firstName");
        String lastName =request.getParameter("lastName");
        
        

        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
       
            String [] musictype  = request.getParameterValues("music");
            int i;
        for ( i = 0; i< musictype.length; i++) {

        }

            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet DisplayMusicChioces</title>");  
            out.println("</head>");
            out.println("<body>");
           
            out.println("<table style='border:2px solid red'>");
            out.println("<tr>");
            out.print("<td>");
            out.print("<h1>Thank you for joining our email list,</h1>" + firstName + musictype [i]+ lastName);
            out.println("</td>");
             out.println("</tr>");
            
            out.println("<table>");
            out.println("</table>");

            out.println("</body>");
            out.println("</html>");
            out.close();
            
        } 
            
    @Override
        protected void doGet(
            HttpServletRequest request,
            HttpServletResponse  response)
           throws ServletException, IOException
        {
            doPost(request,response);

        }
    }

**supercommando69** · Feb 1st, 2011, 06:02 PM

hi
did you resolve this issue? let me know the solution please...what code you got for resolving this?

thanks
K

**BramVandenbon** · Feb 2nd, 2011, 06:15 PM

Just an idea, I'm not sure if this works with servlets but this is how I've seen it in php ...

Code:

<select name='color[]' size=4 multiple>
<option value='blue'>Blue</option>
<option value='green'>Green</option>
<option value='red'>Red</option>

Notice the brackets in the name of the list: "color[]"
Perhaps the same trick needs to be applied in Java.

Never tried it before, but hey

at least it's some inspiration for you, in case you're really stuck.

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