package cn.com.goldenwater.id.util;

import java.util.Random;
import java.util.UUID;

public class UuidUtil {

    public static String uuid() {
        return UUID.randomUUID().toString().replace("-", "");
    }
    public static void main(String[] args)
    {
        System.out.println(UUID.randomUUID().toString().replace("-", ""));
    }

    public static String genernateNonce(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();
    }
}