java實現Base64算法

主要參考了慕課網上《java實現Base64加密》這門課程

import java.io.IOException;
import org.apache.commons.codec.binary.Base64;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class exerciseBase64 {

	private static String src="l love programming";
	
	public static void main(String[] args) {
		jdkBase64();
		commonsCodeBase64();
        bouncyCastleBase64();
	}
	//jdk實現
	public static void jdkBase64()  {
	  BASE64Encoder encoder=new BASE64Encoder();
	  String encode=encoder.encode(src.getBytes());
	  System.out.println("jdk實現\n加密後:"+encode);
	  
	  BASE64Decoder decoder=new BASE64Decoder();
	  try {
		System.out.println("解密後:"+new String(decoder.decodeBuffer(encode)));
	} catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}  
	}
	//cc實現
	public static void commonsCodeBase64() {
		byte[] encodeBytes=Base64.encodeBase64(src.getBytes());
		System.out.println("Commons Codec實現\n加密後:"+new String(encodeBytes));
		
		byte[] decodeBytes=Base64.decodeBase64(encodeBytes);
		System.out.println("解密後:"+new String(decodeBytes));
				
	}
	//bc實現
	public static void bouncyCastleBase64() {
		byte[] encodeBytes=org.bouncycastle.util.encoders.Base64.decode(src.getBytes());
		System.out.println("Bouncy Castle實現\n加密後:"+new String(encodeBytes));
		
		byte[] decodeBytes=org.bouncycastle.util.encoders.Base64.encode(encodeBytes);
		System.out.println("解密後:"+new String(decodeBytes));
	}

}