A convenience method to write this uploaded item to disk.
<p>This method is not guaranteed to succeed if called more than once for
the same part. This allows a particular implementation to use, for
example, file renaming, where possible, rather than copying all of the
underlying data, thus gaining a significant performance benefit.
@param fileName the name of the file to which the stream will be
written. The file is created relative to the location as
specified in the MultipartOptions
A convenience method to write this uploaded item to disk.
<p>This method is not guaranteed to succeed if called more than once for the same part. This allows a particular implementation to use, for example, file renaming, where possible, rather than copying all of the underlying data, thus gaining a significant performance benefit.
@param fileName the name of the file to which the stream will be written. The file is created relative to the location as specified in the MultipartOptions
@throws IOException if an error occurs.