随机生成一个没有 " - " 的uuid

//生成一个没有-线的32为uuid
public static String  getUUid(){
	UUID uuid=UUID.randomUUID();
	String uuid_old=uuid.toString();
	System.out.println(uuid_old);
	String uuid_new =(uuid_old.substring(0, 8)
		+uuid_old.substring(9, 13)+
		uuid_old.substring(14, 18)
		+uuid_old.substring(19, 23)
		+uuid_old.substring(24, 36)).toUpperCase();
	System.out.println(uuid_new);
	return uuid_new;
}