File uploading in to document and library portlet:

In this example i have done with liferay 6.06 version working fine.

In upload.jsp:

<%@taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet"%>

<portlet:actionURL name="uploadBook" var="upload"></portlet:actionURL>

<form action="<%=upload.toString()%>" method="post" enctype="multipart/form-data">

 <input type="file" name="file"/ name='<portlet:namespace/>file'>

 <input type="submit" value="Upload Book" />

</form>

in controller class:

  public void uploadBook(ActionRequest actionRequest,

                            ActionResponse actionRresponse) throws PortletException,

                            IOException, com.liferay.portal.kernel.exception.PortalException, com.liferay.portal.kernel.exception.SystemException {

           UploadPortletRequest uploadRequest = PortalUtil.getUploadPortletRequest(actionRequest);

               String submissionFileName = uploadRequest.getFileName("file");//uploaded filename

           ThemeDisplay themeDisplay = (ThemeDisplay) actionRequest.getAttribute(WebKeys.THEME_DISPLAY);

               ServiceContext serviceContext = ServiceContextFactory.getInstance(actionRequest);

              int i=0;

               File file3 = uploadRequest.getFile("file");

                long userId=10169;

              long groupId=10157;

              long folderId=11502;

              java.lang.String name=submissionFileName;

              java.lang.String title=submissionFileName;

              java.lang.String description=submissionFileName+"related to computerscience";

              java.lang.String changeLog="";

              java.lang.String extraSettings=""; 

              System.out.println("user id:"+userId);

                   System.out.println("group id"+groupId);

                   System.out.println("folder id"+folderId);

                   System.out.println("file name"+name);

                   System.out.println("title"+title);

                   System.out.println("description"+description);

                   System.out.println("changelog"+changeLog);

                   System.out.println("extraSettings"+extraSettings);

                   System.out.println("file location"+file3);

                   System.out.println(serviceContext);

                   System.out.println();

    DLFileEntryLocalServiceUtil.addFileEntry(  
  userId,                                                          groupId,                                                          folderId,
  name,
  title,                                                            description,                                                      changeLog,                                                        extraSettings,
  file3,                                                            serviceContext);

             

           String successMessage ="File Uploaded Successfully";

         SessionMessages.add(actionRequest, "request_rocessed",successMessage);

         i++;

        

    }