FileSystem以标准输出格式显示Hadoop文件中的文件

//这里是以FileSystem以标准输出格式显示Hadoop文件中的文件

package com;

import java.io.InputStream;

import java.net.URI;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.fs.FileSystem;

import org.apache.hadoop.fs.Path;

import org.apache.hadoop.io.IOUtils;

public class FileSystemCat{

/**

* @param args

*/

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

// TODO Auto-generated method stub

String uri = args[0];

Configuration conf = new Configuration();

FileSystem fs = FileSystem.get(URI.create(uri), conf);

InputStream in = null;

try{

in = fs.open(new Path(uri));

IOUtils.copyBytes(in, System.out, 4096, false);

}finally{

IOUtils.closeStream(in);

}

}