b64

//1
String str = appkey + ":" + secret;
        byte[] b = str.getBytes("UTF-8");
        String secretb = Base64.encodeBase64String(b);
        System.out.println(secretb);



//2

String key = appkey+":"+secret;;
        key = encode(key);
        System.out.println(key);
//        System.out.println("长度:"+key.length());
        key = decode(key);
//        System.out.println("解密后:"+key);


        String encodedStr = org.apache.commons.codec.binary.Base64.encodeBase64String(key.getBytes());
        System.out.printf(encodedStr, "UTF-8");