JavaZip GZIPInputStream.read() 方法

package com.codingdict;



import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.util.Arrays;

import java.util.zip.DataFormatException;

import java.util.zip.GZIPInputStream;

import java.util.zip.GZIPOutputStream;



public class GZIPInputStreamDemo {



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

      String message = "Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;"

         +"Welcome to codingdict.com;";



      System.out.println("Original Message length : " + message.length());

      byte[] input = message.getBytes("UTF-8");



      // Compress the bytes

      ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();

      GZIPOutputStream outputStream = new GZIPOutputStream(arrayOutputStream);

      outputStream.write(input);

      outputStream.close();



      //Read and decompress the data

      byte[] readBuffer = new byte[5000];

      ByteArrayInputStream arrayInputStream = 

         new ByteArrayInputStream(arrayOutputStream.toByteArray());

      GZIPInputStream inputStream = new GZIPInputStream(arrayInputStream);

      int read = inputStream.read(readBuffer,0,readBuffer.length);

      inputStream.close();

      //Should hold the original (reconstructed) data

      byte[] result = Arrays.copyOf(readBuffer, read);



      // Decode the bytes into a String

      message = new String(result, "UTF-8");



      System.out.println("UnCompressed Message length : " + message.length());

   }

}