Upload servelet issues

hi, i got a project that involves uploading file using a servlet. searching on google I found the "commons file upload " of apache. done it, added jar files.

commons-file-upload-1.2.1-bin and
commons-lang-2.4-bin.

when i first ran the application, it was successful until loading the loading of the file. when i tried to upload it, this error pops up

java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileItemFactory
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
java.lang.Class.getConstructor0(Class.java:2699)
erThread.java:112)
.
.
.
java.lang.Thread.run(Thread.java:619)

so i figured that maybe i did not add the jar files to the server. i opened the server and added some jar files
(C:\Program Files\jboss-4.0.5.GA\server\default\lib) I put it there because i seen many jar files there(i think i will be scolded in this....).

i ran the application again. but this time it yielded a differend error.


java.lang.NoClassDefFoundError: org/apache/commons/io/output/DeferredFileOutputStream
org.apache.commons.fileupload.disk.DiskFileItemFactory.createItem(DiskFileItemFactory.java:196)
org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:358)
org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126)
ph.com.mobility.projects.model.EprocUploadServlet.doPost(EprocUploadServlet.java:41)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

what does this one means? do i need to download additional jar files?

done from netbeans 6.5 and Jboss as the server.


here is the code of the file upload servlet.

The Commons FileUpload library needs the Commons IO library in order to work. Luckily, the Apache package names are pretty consistently named, so as you get more experienced you'll be able to see what's missing just by looking at the error message.

thank you very much. yeah it resolved the problem but a new problem arises lol. Ill post a new thread