Class IOUtil

src/main/java/cn/lws/server/util/IOUtil.java:15–38

Created by zl on 2019/03/01.

 * Created by zl on 2019/03/01.
 */
@Slf4j
public class IOUtil {

    public static byte[] getBytesFromFile(String fileName) throws IOException {
        URL url = IOUtil.class.getResource(fileName);
        if (url == null) {
            log.info("file:{}",fileName);
            throw new FileNotFoundException();
        }
        log.info("正在读取文件:{}",url.getFile());
        return getBytesFromStream(new FileInputStream(url.getFile()));
    }

    public static byte[] getBytesFromStream(FileInputStream in) throws IOException {
        FileChannel channel = in.getChannel();
        ByteBuffer buf = ByteBuffer.allocate((int) channel.size());
        channel.read(buf);
        channel.close();
        in.close();
        return buf.array();
    }

   
}