把字节数组保存为一个资料

/**
	 * 把字节数组保存为一个文件
	 * 
	 * @param b
	 * @param outputFile
	 * @return
	 */
	public static File getFileFromBytes(byte[] b, String outputFile) {
		File ret = null;
		BufferedOutputStream stream = null;
		try {
			ret = new File(outputFile);
			FileOutputStream fstream = new FileOutputStream(ret);
			stream = new BufferedOutputStream(fstream);
			stream.write(b);
		} catch (Exception e) {
			log.error("helper:get file from byte process error!");
			e.printStackTrace();
		} finally {
			if (stream != null) {
				try {
					stream.close();
				} catch (IOException e) {
					log.error("helper:get file from byte process error!");
					e.printStackTrace();
				}
			}
		}
		return ret;
	}