java 流写入本地文件

	private static void writeToLocal(String destination, InputStream input) throws Exception{
		int index;
		byte[] bytes = new byte[1024];
		FileOutputStream downloadFile = new FileOutputStream(destination);
		while ((index = input.read(bytes)) != -1) {
			downloadFile.write(bytes, 0, index);
			downloadFile.flush();
		}
		downloadFile.close();
		input.close();
	}