public class HdfsUtils {

	private static FileSystem fileSystem;

	@Before

	public void init() throws IOException {

		Configuration conf = new Configuration();

		// fileSystem = FileSystem.get(conf);

	}

	@Test

	public void download() throws IOException {

		Configuration conf = new Configuration();

		FileSystem fileSystem = FileSystem.get(conf);

		Path path = new Path("/test");

		FSDataInputStream inStream = fileSystem.open(path);

		OutputStream outStream = new FileOutputStream("D:/test.txt");

		IOUtils.copy(inStream, outStream);

	}

	@Test

	public void upload2() throws IllegalArgumentException, IOException {

		fileSystem.copyFromLocalFile(new Path("D:/test.txt"), new Path("/test.txt"));

	}