/**Servlet demonstrating how a client can send data to the server-side by using
* the GET-method.
* Internet Programming 2 - Course 
* @author Martin Carlsson
*/
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class LinksGetMethod extends HttpServlet {
    
    public void doGet(HttpServletRequest req, HttpServletResponse res) 
                                    throws IOException, ServletException {
        res.setContentType("text/plain");
        PrintWriter out = res.getWriter();
        formatPrint("QUERY STRING:", out);
        formatPrint(req.getQueryString(), out);
        formatPrint("",out);
        formatPrint("REQUESTED PARAMETERS:", out);

        Enumeration e = req.getParameterNames();
        while (e.hasMoreElements()) {
            String key = (String)e.nextElement();
            String[] values = req.getParameterValues(key);
            for(int i = 0; i < values.length; i++) {
                formatPrint(key, values[i], out);
            }
        }
    }
    
    private void formatPrint(String string, PrintWriter pw) {
        if(string == null)
            string = "No value (null)";
        pw.println(string);
    }

    private void formatPrint(String name, String value, PrintWriter pw) {
        
        if(value == null) 
            value = "No value (null)";
        pw.println(name + ": " + value);
    }
}