Zookeeper项目中用到的分布式锁

最新推荐文章于 2025-09-06 21:58:22 发布

weixin_34194087

最新推荐文章于 2025-09-06 21:58:22 发布

阅读量96

点赞数

CC 4.0 BY-SA版权

文章标签：大数据 java

原文链接：https://juejin.im/post/5cdbc369e51d453a59418bb5

本文详细介绍了使用Zookeeper实现分布式锁的过程，包括AccountLock类的设计与实现，通过示例代码展示了如何在具体业务场景中应用分布式锁，以及锁的获取与释放流程。

例子 private static boolean wasAcquired = false;// 是否获取了锁 public void tetsZookeeper(){ String serverId = UUID.randomUUID().toString().toLowerCase(); AccountLock lock = new AccountLock("/ACCOUNT/" + serverId,zookeeperConnector); log.info(“开始获取锁”); wasAcquired = lock.acquire(3);// 锁 log.info(“获取锁:”+(wasAcquired?“SUCCESS”:“ERROR”)); try{ System.out.println(“11111111”); Thread.sleep(2000); return; }catch (Exception e){ log.error(e.getMessage(),e); }finally { log.info(“开始释放锁…”); lock.release();// 释放锁 } }

AccountLock类 package com.baibei.pay.utils;

import com.baibei.pay.configurer.ZooKeeperConnector; import lombok.extern.slf4j.Slf4j; import org.apache.curator.framework.recipes.locks.InterProcessMutex;

import java.util.concurrent.TimeUnit;

@Slf4j public class AccountLock { InterProcessMutex lock; boolean wasAcquired = false;// 是否获取到了锁

public AccountLock(String path, ZooKeeperConnector zookeeperConnector) { lock = new InterProcessMutex(zookeeperConnector.getClient(), path); }

/**

尝试加锁并等待
@param timeOut
超时时间（秒）, -1 不限时
@return true为获取锁成功，false为获取锁失败
@throws Exception */ public boolean acquire(int timeOut) { try { wasAcquired = lock.acquire(timeOut, TimeUnit.SECONDS); } catch (Exception e) { log.error(“get Lock time out ERROR:” + e.getMessage()); wasAcquired = false; } return wasAcquired; }

/**

释放锁
@throws Exception */ public void release() { if (wasAcquired) { try { lock.release(); } catch (Exception e) { log.error(“remove Lock ERROR:” + e.getMessage()); } } } }

转载于:https://juejin.im/post/5cdbc369e51d453a59418bb5