Retrieving multiple values from queryString

[r rafanan]

Does anybody have examples about how to retrieve multiple values from a query string?

I have a site

http://www.x.com/test?Parent=NewsSite&SiteArea=@NewsArea

I can retrieve the whole query string

Parent=NewsSite&SiteArea=@NewsArea

by the request.getQueryString() method. (I am using the java portlet api btw)

Does anyone have any examples of how I can a query string with multiple values in java?

I would like to be able to parse Parent=NewsSite&SiteArea=@NewsArea and retrieve the valeus NewsSite and NewsArea

Thanks,
Rolando.

[Jeffrey Spaulding]

Look up request.getParameter() in the Servlet API Doc

[r rafanan]

Problem solved! Here's a decent example on how to parse a query string with multiple values.

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
 
public class ParameterSnoop extends HttpServlet {
 
  public void doGet(HttpServletRequest req, HttpServletResponse res)
                               throws ServletException, IOException {
    res.setContentType("text/plain");
    PrintWriter out = res.getWriter();
 
    out.println("Query String:");
    out.println(req.getQueryString());
    out.println();
 
    out.println("Request Parameters:");
    Enumeration enum = req.getParameterNames();
    while (enum.hasMoreElements()) {
      String name = (String) enum.nextElement();
      String values[] = req.getParameterValues(name);
      if (values != null) {
        for (int i = 0; i < values.length; i++) {
          out.println(name + " (" + i + "): " + values);
        }
      }
    }
  }

[Bear Bibeault]

All that is only necessary if you don't know what the names of the submitted parameters are. If you already know the names of the parameters that will be submitted, looping through an enumeration of the names is rather pointless.