Hadoop 從URL中讀取數據

package com.hadoop;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import org.apache.hadoop.fs.FsUrlStreamHandlerFactory;
import org.apache.hadoop.io.IOUtils;

public class URLCat {

	static {
		URL.setURLStreamHandlerFactory(new FsUrlStreamHandlerFactory());
	}
	
	public static void main(String[] args) throws Exception, IOException {
		
		InputStream in = null;
		try {
			in = new URL(args[0]).openStream();
			IOUtils.copyBytes(in, System.out, 4096,false);
		} finally {
			IOUtils.closeStream(in);
		}
	}
}

　hadoop中運行：