Upload file to the specified upload folder in upload-directory
global-param. By default, if this parameter is not specified,
/WEB-INF/file_upload/uploads folder is assumed.
If rootDir init-param is specified in the portlet definition,
the upload folder will be relative to this root directory. Otherwise, the
folder's path will be relative to the Web application's context path (must start with "/").
An optional upload-field-name tag is to specify the form's
file field name. Default field name is file_path.
author: Wirawan Chokry author: (c) 2005 Nabh Information Systems, Inc. All Rights Reserved.