Springboot集成zookeeper组件

1）在父工程中添加zookeeper的相关依赖

<dependency>
    <groupId>com.github.sgroschupf</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.1</version>
</dependency>

<dependency>
    <groupId>org.apache.curator</groupId>
    <artifactId>curator-framework</artifactId>
    <version>2.12.0</version>
</dependency>

<dependency>
    <groupId>org.apache.curator</groupId>
    <artifactId>curator-recipes</artifactId>
    <version>2.12.0</version>
</dependency>

<dependency>
    <groupId>org.apache.zookeeper</groupId>
    <artifactId>zookeeper</artifactId>
    <version>3.4.14</version>
    <exclusions>
        <exclusion>
            <artifactId>log4j</artifactId>
            <groupId>log4j</groupId>
        </exclusion>
        <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </exclusion>
    </exclusions>
</dependency>

2）创建ZookeeperConfig.java类，将zkCli注入容器

    @Bean(name = "zkClient")
    public ZooKeeper zkClient() {
        ZooKeeper zooKeeper = null;
        try {
            final CountDownLatch countDownLatch = new CountDownLatch(1);
            zooKeeper = new ZooKeeper(connectString, timeout, new Watcher() {
                @Override
                public void process(WatchedEvent event) {
                    if (Event.KeeperState.SyncConnected == event.getState()) {
                        //如果收到了服务端的响应事件,连接成功
                        countDownLatch.countDown();
                    }
                }
            });
            countDownLatch.await();
            logger.info("【初始化ZooKeeper连接状态....】={}", zooKeeper.getState());
        } catch (Exception e) {
            logger.error("初始化ZooKeeper连接异常....】={}", e);
        }
        return zooKeeper;
    }

}

3）创建WatcherApi实现watcher，重写process方法：

@Override
public void process(WatchedEvent event) {
    logger.info("【Watcher监听事件】={}",event.getState());
    logger.info("【监听路径为】={}",event.getPath());
    logger.info("【监听的类型为】={}",event.getType()); //  三种监听类型： 创建，删除，更新
}