不多说，直接上代码。

代码

package zhouls.bigdata.myWholeHadoop.HDFS.hdfs2;

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

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

public class HdfsUtil {

public static void main(String[] args) throws IOException {

// to upload a file to hdfs

Configuration conf = new Configuration();

FileSystem fs = FileSystem.get(conf);

Path src = http://www.mamicode.com/new Path("hdfs://HadoopMaster:9000/jdk-7u65-linux-i586.tar.gz");

FSDataInputStream in = fs.open(src);

FileOutputStream os = new FileOutputStream("/home/hadoop/download/jdk.tgz");

IOUtils.copy(in, os);




}




}

Hadoop HDFS编程 API入门系列之HdfsUtil版本1（六）