public static boolean downloadFile(HttpServletResponse response, String fileName) {
		File file = new File(fileName);
		return downloadFile(response, file);
	}
Download the given file to the given {@link HttpServletResponse}.

@param response {@link HttpServletResponse}
@param fileName file path
@return true if succeeded
ngrinder-controller/src/main/java/org/ngrinder/common/util/FileDownloadUtils.java