JDK Base64加密解密算法

核心提示：java Base64编码非常容易,jdk本身就提供了base64编码的类,下面是base64编码和解码的例子 例子中使用参数-e表示加密,-d表示解密. 代码 import java.io.ByteArrayInputStream; import java.io.FileInputStream; import java.io.FileOutputStream; import sun.m
java Base64编码非常容易,jdk本身就提供了base64编码的类,下面是base64编码和解码的例子

例子中使用参数-e表示加密,-d表示解密.

代码
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;


public class Base64 {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub       
        if(args.length==2){
            if("-e".equals(args[1])){
                //System.out.println("encoding.\r\n\r\n");
                BASE64Encoder base64=new BASE64Encoder();
                base64.encode(args[0].getBytes("utf-8"), System.out);
            }else if("-d".equals(args[1])){
                //System.out.println("decoding.\r\n\r\n");
                BASE64Decoder base64=new BASE64Decoder();
                base64.decodeBuffer(new ByteArrayInputStream(args[0].getBytes("utf-8")), System.out);
            }
        }else if(args.length==3){
            if("-e".equals(args[2])){
                //System.out.println("encoding.\r\n\r\n");
                BASE64Encoder base64=new BASE64Encoder();
                base64.encode(new FileInputStream(args[0]), new FileOutputStream(args[1],false));
            }else if("-d".equals(args[2])){
                //System.out.println("decoding.\r\n\r\n");
                BASE64Decoder base64=new BASE64Decoder();
                base64.decodeBuffer(new FileInputStream(args[0]), new FileOutputStream(args[1],false));
            }
        }else
            System.out.println("used c:\\>java Base64 inputString -e or c:\\>java Base64 inputFile outputFile -d");
        System.out.flush();
        System.out.println("\r\n\r\n");
    }

}