private String getFileName(MultivaluedMap<String, String> header) {
 
		String[] contentDisposition = header.getFirst("Content-Disposition").split(";");
 
		for (String filename : contentDisposition) {
			if ((filename.trim().startsWith("filename"))) {
 
				String[] name = filename.split("=");
 
				String finalFileName = name[1].trim().replaceAll("\"", "");
				return finalFileName;
			}
		}
		return "unknown";
	}