Base85 aka ASCII85 java項目

Question

有沒有人知道除com.idataconnect.lib.ascii85codec之外的任何其他類似於org.apache.commons.codec.binary.Base64類的java項目？

Answer 1

，我發現這個項目，似乎這樣的伎倆： http://pdfbox.apache.org/downloads.html#recent

下面的類編碼和解碼。代碼的評論和建議非常歡迎：

import org.apache.pdfbox.io.ASCII85InputStream; 
import org.apache.pdfbox.io.ASCII85OutputStream; 

import java.io.ByteArrayInputStream; 
import java.io.ByteArrayOutputStream; 
import java.io.IOException; 
import java.io.UnsupportedEncodingException; 
import java.util.ArrayList; 



public class Ascii85Coder { 

public static byte[] decodeAscii85StringToBytes(String ascii85) { 
    ArrayList<Byte> list = new ArrayList<Byte>(); 
    ByteArrayInputStream in_byte = null; 
    try { 
     in_byte = new ByteArrayInputStream(ascii85.getBytes("ascii")); 
    } catch (UnsupportedEncodingException e) { 
     e.printStackTrace(); 
    } 
    ASCII85InputStream in_ascii = new ASCII85InputStream(in_byte); 
    try { 
     int r ; 
     while ((r = in_ascii.read()) != -1) { 
      list.add((byte) r); 
     } 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
    byte[] bytes = new byte[list.size()]; 
    for (int i = 0; i < bytes.length; i++) { 
     bytes[i] = list.get(i); 
    } 
    return bytes; 
} 


public static String encodeBytesToAscii85(byte[] bytes) { 
    ByteArrayOutputStream out_byte = new ByteArrayOutputStream(); 
    ASCII85OutputStream out_ascii = new ASCII85OutputStream(out_byte); 

    try { 
     out_ascii.write(bytes); 
     out_ascii.flush(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
    String res = ""; 
    try { 
     res = out_byte.toString("ascii"); 
    } catch (UnsupportedEncodingException e) { 
     e.printStackTrace(); 
    } 
    return res; 
} 
} 

Answer 2

在java.net上有Ascii85的實現。