Problem with commons-fileupload library.

Question

Hello,
I'm using the following code to try and upload files to my Tomcat server from HTTP clients. The code is inside a JSP page. When I submit the form to this jsp page, I get no errors but the file is not being uploaded and the only out.println statement that is printing is the first one that tests if the form is multi-part. It prints true.
     boolean isMultipart = FileUpload.isMultipartContent(request);
     out.println("" + isMultipart);
     if (isMultipart) {
          DiskFileUpload upload = new DiskFileUpload();
          upload.setSizeThreshold(2000000);
          upload.setSizeMax(5000000);
          int sizeThresh = 2000000, sizeMax = 5000000;
          String dir = "c:/temp";
          List items = upload.parseRequest(request, sizeThresh, sizeMax, dir);
          Iterator iter = items.iterator();
          while (iter.hasNext()) {
               FileItem item = (FileItem) iter.next();
               out.println(item.getFieldName());
               if (item.isFormField()) {
                    continue;
               else {
                    String fieldName = item.getFieldName();
                    String fileName = item.getName();
                    String contentType = item.getContentType();
                    boolean isInMemory = item.isInMemory();
                    long sizeInBytes = item.getSize();
                    out.println("Info: " + sizeInBytes + " " + contentType + " " + fileName + " " + fieldName);
                    File uploadedFile = new File("test.txt");
                    item.write(uploadedFile);
     } Any idea what my problem is?
Thanks.

Answer 1

Sorry to keep posting but this gets more complex. Here's the deal.
The UploadBean works on both Tomcat 4 and Tomcat 5 as long as the code below has not been called yet for the user's session. It is code that asks the browser for authentication. Once this code has been called for the current session, the Upload Bean no longer works.
Any idea what would cause this?
package com.biscuit.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
* NTLM authorization (Challenge-Response) test servlet.
* Requires IE on the client side.
* In order to avoid browser log on dialog box User Authentication/Logon
* settings should be set to:
* <ol>
* <li>Automatic logon in Intranet zone or</li>
* <li>Automatic logon with current username and password</li>
* </ol>
* Based on information found on jGuru WEB site:
* http://www.jguru.com/faq/viewquestion.jsp?EID=393110
* @author Leonidius
* @version 1.0 2002/06/17
public class NTLMTest extends HttpServlet{
     // Step 2: Challenge message
     final private static byte[] CHALLENGE_MESSAGE =
          {(byte)'N', (byte)'T', (byte)'L', (byte)'M', (byte)'S', (byte)'S', (byte)'P', 0,
          2, 0, 0, 0, 0, 0, 0, 0,
          40, 0, 0, 0, 1, (byte)130, 0, 0,
          0, 2, 2, 2, 0, 0, 0, 0, // nonce
          0, 0, 0, 0, 0, 0, 0, 0};
     * HTTP request processing
     protected synchronized void service(HttpServletRequest request,
          HttpServletResponse response)
          throws IOException, ServletException{
          PrintWriter out = response.getWriter();
          try{
               String auth = request.getHeader("Authorization");
               if (auth == null) {
                    response.setContentLength(0);
                    response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                    response.setHeader("WWW-Authenticate", "NTLM");
                    response.flushBuffer();
                    return;
               if (!auth.startsWith("NTLM ")) return;
               byte[] msg = new sun.misc.BASE64Decoder().decodeBuffer(auth.substring(5));
               // Step 1: Negotiation message received
               if (msg[8] == 1) {
                    // Send challenge message (Step 2)
                    response.setContentLength(2);
                    response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                    response.setHeader("WWW-Authenticate",
                    "NTLM " + new sun.misc.BASE64Encoder().encodeBuffer(CHALLENGE_MESSAGE));
                    out.println(" ");
                    response.flushBuffer();
                    return;
               // Step 3: Authentication message received
               if (msg[8] == 3) {
                    int off = 30;
                    int length, offset;
                    length = (msg[off+1]<<8) + msg[off];
                    offset = (msg[off+3]<<8) + msg[off+2];
                    String domain = new String(msg, offset, length);
                    domain = removeBlanks(domain).toUpperCase();
                    length = (msg[off+9]<<8) + msg[off+8];
                    offset = (msg[off+11]<<8) + msg[off+10];
                    String user = new String(msg, offset, length);
                    user = domain + "\\" + removeBlanks(user).toUpperCase();
                    HttpSession session = request.getSession(true);                    
                    session.setAttribute("userID", user);                    
                    String forwardAddress = "home";     
                    RequestDispatcher dispatcher = request.getRequestDispatcher(forwardAddress);
                    dispatcher.forward(request, response);
//                    length = (msg[off+17]<<8) + msg[off+16];
//                    offset = (msg[off+19]<<8) + msg[off+18];
//                    String ws = new String(msg, offset, length);
//                    ws = removeBlanks(ws);
//                    response.setContentType("text/html");
//                    out.println("<html>");
//                    out.println("<head>");
//                    out.println("<title>NT User Login Info</title>");
//                    out.println("</head>");
//                    out.println("<body>");
//                    out.println(new java.util.Date() + "<br>");
//                    out.println("Server: " + request.getServerName() + "<br><br>");
//                    out.println("Domain: " + removeBlanks(domain) + "<br>");
//                    out.println("Username: " + removeBlanks(user) + "<br>");
//                    out.println("Workstation: " + removeBlanks(ws) + "<br>");
//                    out.println("</body>");
//                    out.println("</html>");
          catch (Throwable ex){
               ex.printStackTrace();
     }//service
     * Removes non-printable characters from a string
     private synchronized String removeBlanks(String s){
          StringBuffer sb = new StringBuffer();
          for (int i = 0; i < s.length(); i++) {
               char c = s.charAt(i);
               if (c > ' ')
               sb.append(c);
          return sb.toString();
}//class NTLMTest