请教java的VFP应用

有一段java代码，请教各位老师大佬们如何转为在vfp中应用（转换为VFP9.0）：
package com.lou.springboot;
import
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.util.Random;

public class SignUtil {
    private SignUtil() {
    }

    public static void main(String[] args) {
         String xRioNonce = getRandomString(32);     //随机数
        String xRioTimestamp = String.valueOf(getCurrentUnixSeconds());    //时间戳
        String signature = getSHA256Str(xRioTimestamp + secretKey + xRioNonce + xRioTimestamp);   //签名

    }

    /*** 获取随机数 */
    private static String getRandomString(int length) {
        String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; ++i) {
            int number = random.nextInt(62);
            sb.append(str.charAt(number));
        }
        return sb.toString();
    }

    /*** 获取当前时间戳 */
    private static long getCurrentUnixSeconds() {
        ZoneOffset zoneOffset = ZoneOffset.ofHours(8);
        LocalDateTime localDateTime = LocalDateTime.now();
        return localDateTime.toEpochSecond(zoneOffset);
    }

    /*** 使用SHA-256算法进行加密 */
    private static String getSHA256Str(String str) {
        String encodeStr = "";
        try {
            MessageDigest messageDigest = MessageDigest.getInstance("SHA-256");
            messageDigest.update(str.getBytes("UTF-8"));
            encodeStr = byte2Hex(messageDigest.digest());
        } catch (NoSuchAlgorithmException var4) {
            var4.printStackTrace();
        } catch (UnsupportedEncodingException var5) {
            var5.printStackTrace();
        }
        return encodeStr;
    }

    private static String byte2Hex(byte[] bytes) {
        StringBuffer stringBuffer = new StringBuffer();
        String temp = null;
        for (int i = 0; i < bytes.length; ++i) {
            temp = Integer.toHexString(bytes[i] & 255);
            if (temp.length() == 1) {
                stringBuffer.append("0");
            }
            stringBuffer.append(temp);
        }
        return stringBuffer.toString();
    }
}
 

[此贴子已经被作者于2024-11-27 08:44编辑过]