Java签名排序，签名排序ksort升序排序

签名排序ksort升序排序

    public static String sign(final Map<String, Object> data) {
        Set<String> keySet = data.keySet();
        String[] keyArray = keySet.toArray(new String[0]);
        Arrays.sort(keyArray);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < keyArray.length; i++) {
            if ("sign".equals(keyArray[i])) {
                continue;
            }
            // 参数值为空，则不参与签名
            if (String.valueOf(data.get(keyArray[i])).length() > 0) {
                sb.append(keyArray[i]).append("=").append(data.get(keyArray[i]));
                if (i < keyArray.length - 1) {
                    sb.append("&");
                }
            }
        }
        return sb.toString();
    }