Get filename option from http request header

get_filename_from_header

	/**
	 * @param part
	 * @return
	 */
	private String getFileName(final Part part) {
		final String partHeader = part.getHeader("content-disposition");
		for (String content : partHeader.split(";")) {
			if (content.trim().startsWith("filename")) {
				return content.substring(content.indexOf('=') + 1).trim().replace("\"", "");
			}
		}
		return null;
	}