Class to debug fields from submited form

SubmitForm

package br.com.gabbay.servlets;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 * Servlet implementation class SubmitForm
 */
@WebServlet("/SubmitForm")
public class SubmitForm extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public SubmitForm() {
		super();
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		listAllFieldsFromForm("GET", request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		listAllFieldsFromForm("POST", request, response);
	}

	private void listAllFieldsFromForm(String method, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();

		out.write("METHOD: " + method + "\r\n</br>");
		out.write("========================================================================\r\n</br>");
		
		boolean isMultipart = ServletFileUpload.isMultipartContent(request);

		// Multipart form
		if (isMultipart) {
			FileItemFactory factory = new DiskFileItemFactory();
			ServletFileUpload upload = new ServletFileUpload(factory);


			try {
				List items = upload.parseRequest(request);
				Iterator iterator = items.iterator();
				while (iterator.hasNext()) {
					FileItem item = (FileItem) iterator.next();
					if (!item.isFormField()) {
						String fieldName = item.getFieldName();
						String fileName = item.getName();

						out.write("FILE:" + fieldName + "=" + fileName);
						/*
						 * String root = getServletContext().getRealPath("/");
						 * File path = new File(root + "/fileuploads"); if
						 * (!path.exists()) { boolean status = path.mkdirs(); }
						 * 
						 * File uploadedFile = new File(path + "/" + fileName);
						 * item.write(uploadedFile);
						 */
					} else {
						// Process regular form field (input
						// type="text|radio|checkbox|etc", select, etc).
						String fieldName = item.getFieldName();
						String fieldValue = item.getString();
						out.write("FIELD:" + fieldName + "=" + fieldValue);
					}
					out.write("\r\n</br>");
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		
		// Regular form
		} else {
			HttpSession session = request.getSession();

			Enumeration keys = request.getParameterNames();
			while (keys.hasMoreElements()) {
				String key = (String) keys.nextElement();
				String value = request.getParameter(key);
				
				out.write("FIELD:" + key + "=" + value);
				out.write("\r\n</br>");

				// If the same key has multiple values (check boxes)
				String[] valueArray = request.getParameterValues(key);

				for (int i = 0; i > valueArray.length; i++) {
					out.write("VALUE ARRAY" + valueArray[i]);
					out.write("\r\n</br>");
				}
			}
		}
	}

}