获取hdfs文件上的第二个块的数据

import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IOUtils;

public class Damo {
	public static void main(String[] args) {
		new Damo().readSecBlockInfo();
	}
	private void readSecBlockInfo() {
		Configuration conf = new Configuration();
		conf.set("fs.defaultFS", "hadoop01:9000");
		conf.set("dfs.replication","1");
		try {
			FileSystem fileSystem = FileSystem.get(conf);
			//获取输入流
			FSDataInputStream open = fileSystem.open(new Path("/eclipse_hadoop.zip"));
			//从第二个块
			open.seek(1024*1024*128);//128M
			//输出流
			FileOutputStream fos = new FileOutputStream("D://0321");
			//连接
			IOUtils.copyBytes(open, fos, conf);
			System.out.println("下载成功");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}