hdfs下載文件到本地

import java.io.FileOutputStream;
import java.io.OutputStream;
import java.net.URI;


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 static void main(String[] args) throws Exception

{
 String dest = "hdfs://master001:9000/zhaimo/test62015_09_17_04_38_02/part-r-00000";
 String local = "d:\\test16.txt";
 Configuration conf = new Configuration();
 FileSystem fs = FileSystem.get(URI.create(dest),conf);
 FSDataInputStream fsdi = fs.open(new Path(dest));
 OutputStream output = new FileOutputStream(local);
 IOUtils.copyBytes(fsdi,output,4096,true);
}