java.util.zip.Inflater inflate()方法

java.util.zip.Inflater inflate(byte[] b)方法 介绍

java.util.zip.Inflater.inflate(byte[] b) 方法将字节解压缩到指定的缓冲区。返回未压缩的实际字节数。返回值 0 表示应调用 needsInput() 或 needsDictionary() 以确定是否需要更多输入数据或预设字典。在后一种情况下，getAdler() 可用于获取所需字典的 Adler-32 值。

java.util.zip.Inflater inflate(byte[] b)方法 声明

public int inflate(byte[] b)
   throws DataFormatException

java.util.zip.Inflater inflate(byte[] b)方法 参数

• b ： 未压缩数据的缓冲区。

java.util.zip.Inflater inflate(byte[] b)方法 返回值

• 未压缩的实际字节数。

java.util.zip.Inflater inflate(byte[] b)方法 示例

下面的例子展示了 java.util.zip.Inflater.inflate(byte[] b) 方法的用法。

package com.yiidian;

import java.io.UnsupportedEncodingException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;

public class InflaterDemo {
   public static void main(String[] args) 
      throws DataFormatException, UnsupportedEncodingException {
      String message = "Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;"
         +"Welcome to Yiidian.com;";
      System.out.println("Original Message length : " + message.length());
      byte[] input = message.getBytes("UTF-8");

      // Compress the bytes
      byte[] output = new byte[1024];
      Deflater deflater = new Deflater();
      deflater.setInput(input);
      deflater.finish();
      int compressedDataLength = deflater.deflate(output);
      deflater.end();

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

      // Decompress the bytes
      Inflater inflater = new Inflater();
      inflater.setInput(output, 0, compressedDataLength);
      byte[] result = new byte[1024];
      int resultLength = inflater.inflate(result);
      inflater.end();

      // Decode the bytes into a String
      message = new String(result, 0, resultLength, "UTF-8");
   
      System.out.println("UnCompressed Message length : " + message.length());
   }
}

输出结果为：