📜  Java中的 Inflater getAdler()函数示例

📅  最后修改于: 2022-05-13 01:55:10.036000             🧑  作者: Mango

Java中的 Inflater getAdler()函数示例


InflatergetAdler()函数返回未压缩数据的Adler-32值。 Adler-32 是一种校验和算法,被广泛使用的 zlib 压缩库。

函数签名:

public int getAdler()

句法:

i.getAdler();

参数:该函数不需要参数

返回类型:函数返回整数值,即未压缩数据的 Adler-32 值。
异常:函数没有抛出任何异常

示例 1:使用 getAdler()函数

// Java program to describe the use
// of getAdler function
  
import java.util.zip.*;
import java.io.UnsupportedEncodingException;
class GFG {
    public static void main(String args[])
        throws UnsupportedEncodingException,
               DataFormatException
    {
  
        // compress the data
  
        // deflater
        Deflater d = new Deflater();
  
        // get the text
        String pattern = "GeeksforGeeks", text = "";
  
        // generate the text
        for (int i = 0; i < 4; i++)
            text += pattern;
  
        // set the input for deflator
        d.setInput(text.getBytes("UTF-8"));
  
        // finish
        d.finish();
  
        // output bytes
        byte output[] = new byte[1024];
  
        // compress the data
        int size = d.deflate(output);
  
        // end
        d.end();
  
        // end of compression
  
        // use Inflater to get back the original data
  
        // Inflater
        Inflater i = new Inflater();
  
        // set the input for inflator
        i.setInput(output);
  
        // output bytes
        byte inflater_output[] = new byte[1024];
  
        // uncompress the data
        int org_size = i.inflate(inflater_output);
  
        // output of inflater and deflater
        System.out.println("Compressed output of deflater : "
                           + new String(output));
        System.out.println("Compressed output of Inflater : "
                           + new String(inflater_output, "UTF-8"));
  
        // get Adler-32 value
        System.out.println("Adler-32 value :" + i.getAdler());
  
        // end
        i.end();
    }
}

输出:


参考:
https: Java/util/zip/Inflater.html#getAdler()