i have a problem uploading files to a servlet from a browser
(html) client. i am using the apache commons-fileupload-1.1 jar... i describe
my problem below. i pasted the servlet's java source code, the html i use for
uploading and the error i get. when i try uploading i get the following
exception: java.lang.NoClassDefFoundError:
org/apache/commons/io/output/DeferredFileOutputStream
although i'm not using any DeferredFileOutputStream object anywhere nor am i
importing this class at any time... could someone help?
===========The=Java=Class======using=Commons=FileUpload================================
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import org.apache.commons.fileupload.FileUpload;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
public class TestUpload extends HttpServlet{
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException{
boolean isMultipart = FileUpload.isMultipartContent(request);
if(isMultipart){
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
List /* FileItem */ items=null;
// Parse the request
try{
/*line 58*/ items = upload.parseRequest(request);
}catch(FileUploadException except){
/*...*/
}
}
}
=============The=HTML=File================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
www.pspad.com">
<title>pagina mea</title>
</head>
<form enctype="multipart/form-data"
action="http://localhost/servlet/TestUpload"; method="post">
<input type="file" name="myFileInput">
<input type="submit" name="mySubmit">
</form>
</html>
======The=Servlet=Output============================
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it
from fulfilling this request.
exception
javax.servlet.ServletException: Invoker service() exception
org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:477)
org.apache.catalina.servlets.InvokerServlet.doPost(InvokerServlet.java:169)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NoClassDefFoundError:
org/apache/commons/io/output/DeferredFileOutputStream
org.apache.commons.fileupload.disk.DiskFileItemFactory.createItem(DiskFileItemFactory.java:179)
org.apache.commons.fileupload.FileUploadBase.createItem(FileUploadBase.java:500)
org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:367)
org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:116)
TestUpload.doPost(TestUpload.java:58)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:419)
org.apache.catalina.servlets.InvokerServlet.doPost(InvokerServlet.java:169)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
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