java.util.zip.Inflater.read()方法

package com.yiibai;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.InflaterInputStream;

public class InflaterInputStreamDemo {
   public static void main(String[] args) throws DataFormatException, IOException {
      String message = "Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;"
         +"Welcome to Yiibai.com;";
      System.out.println("Original Message length : " + message.length());
      byte[] input = message.getBytes("UTF-8");
      int length = message.length();
      // Compress the bytes
      byte[] output = new byte[1024];
      Deflater deflater = new Deflater();
      deflater.setInput(input);

      deflater.finish();
      int compressedDataLength = deflater.deflate(output,0 , output.length, Deflater.NO_FLUSH);
      System.out.println("Total uncompressed bytes input :" + deflater.getTotalIn());
      System.out.println("Compressed Message Checksum :" + deflater.getAdler());     
      deflater.finished();

      System.out.println("Compressed Message length : " + compressedDataLength);

      ByteArrayInputStream bin = new ByteArrayInputStream(output);
      InflaterInputStream inflaterInputStream = new InflaterInputStream(bin);
      byte[] result = new byte[1024];

      inflaterInputStream.read(result, 0, result.length);

      inflaterInputStream.close();
      // Decode the bytes into a String
      String message1 = new String(result,0, length,"UTF-8");
      System.out.println(message.equals(message1));
   }
}

原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/264567.html

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