public Sequence() {
    this.datacenterId = getDatacenterId(maxDatacenterId);
    this.workerId = getMaxWorkerId(datacenterId, maxWorkerId);
}
//獲取workerId
protected static long getMaxWorkerId(long datacenterId, long maxWorkerId) {
        StringBuilder mpid = new StringBuilder();
        mpid.append(datacenterId);
        //代表正在運行的Java虛擬機的名稱。
        String name = ManagementFactory.getRuntimeMXBean().getName();
        if (StringUtils.isNotEmpty(name)) {
            /*
             * GET jvmPid
             */
            mpid.append(name.split(StringPool.AT)[0]);
        }
        /*
         * MAC + PID 的 hashcode 獲取16個低位
         */
        return (mpid.toString().hashCode() & 0xffff) % (maxWorkerId + 1);
    }

# 設置隨機
mybatis-plus.global-config.worker-id: ${random.int}

# 設置隨機
mybatis-plus.global-config.worker-id: ${random.int(1,31)}

public class IdWorker {
 
    /**
     * 主機和進程的機器碼
     */
    private static Sequence WORKER = new Sequence();
    //獲取id
    public static long getId() {
        return WORKER.nextId();
    }
 
    public static String getIdStr() {
        return String.valueOf(WORKER.nextId());
    }
 
    /**
     * <p>
     * 有參構造器
     * </p>
     *
     * @param workerId     工作機器 ID
     * @param datacenterId 序列號
     */
    public static void initSequence(long workerId, long datacenterId) {
        WORKER = new Sequence(workerId, datacenterId);
    }
 
    /**
     * <p>
     * 使用ThreadLocalRandom獲取UUID獲取更優(yōu)的效果 去掉"-"
     * </p>
     */
    public static String get32UUID() {
        ThreadLocalRandom random = ThreadLocalRandom.current();
        return new UUID(random.nextLong(), random.nextLong()).toString().replace(StringPool.DASH, StringPool.EMPTY);
    }
 
}

public void init(GlobalConfig globalConfig) {
        // 初始化 Sequence
    //這里需要同時設置workerId和datacenterId
        if (null != globalConfig.getWorkerId()
            && null != globalConfig.getDatacenterId()) {
            IdWorker.initSequence(globalConfig.getWorkerId(), globalConfig.getDatacenterId());
        }
        // 打印 Banner
        if (globalConfig.isBanner()) {
            System.out.println(" _ _   |_  _ _|_. ___ _ |    _ ");
            System.out.println("| | |\\/|_)(_| | |_\\  |_)||_|_\\ ");
            System.out.println("     /               |         ");
            System.out.println("                        "+MybatisPlusVersion.getVersion()+" ");
        }
    }

# 設置隨機
mybatis-plus.global-config.worker-id: ${random.int(1,31)}
mybatis-plus.global-config.datacenter-id: ${random.int(1,31)}