对标准的输入的读取数据进行压缩，然后将其写到标准的输出

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//对标准的输入的读取数据进行压缩，然后将其写到标准的输出

package com;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.io.compress.CompressionOutputStream;
import org.apache.hadoop.util.ReflectionUtils;

public class StreamCompressor {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String codecClassname =args[0];
Class<?> codecClass = Class.forName(codecClassname);
Configuration conf = new Configuration();
CompressionCodec codec = (CompressionCodec) ReflectionUtils.newInstance(codecClass, conf);

CompressionOutputStream out = codec.createOutputStream(System.out);
IOUtils.copyBytes(System.in, out, 4096, conf);
out.finish();
}

}

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