DistributedLockParam lockParam = null;
try {
	lockParam = new DistributedLockParam("test:lock:key");
	boolean lockOk = distributedLock.lock(lockParam);
	if (!lockOk) {
		return new Result().error("系统繁忙，请稍候重试");
	}
	// 执行业务逻辑
} finally {
    // 最后强制解锁
	if (lockParam != null) {
		distributedLock.unlock(lockParam);
	}
}