标签:style blog http color os java 使用 io 文件
zk不是使用maven管理的。
将zk的src下的代码导入eclipse,lib下的jar包导入工程。
QuorumPeerMain类的main方法是入口,启动了zk的server,参数是conf文件的路径,
例如:org.apache.zookeeper.server.quorum.QuorumPeerMain /usr/local/software/zookeeper-3.4.3/bin/../conf/zoo.cfg
客户端入口程序类是ZooKeeperMain。
测试代码:
import java.io.IOException; import java.util.concurrent.CountDownLatch; import org.apache.zookeeper.CreateMode; import org.apache.zookeeper.KeeperException; import org.apache.zookeeper.WatchedEvent; import org.apache.zookeeper.Watcher; import org.apache.zookeeper.Watcher.Event.KeeperState; import org.apache.zookeeper.ZooDefs.Ids; import org.apache.zookeeper.ZooKeeper; public class CreateGroup implements Watcher { private static final int SESSION_TIMEOUT = 5000; private ZooKeeper zk; private CountDownLatch connectedSignal = new CountDownLatch(1); public void connect(String hosts) throws IOException, InterruptedException { zk = new ZooKeeper(hosts, SESSION_TIMEOUT, this); connectedSignal.await(); } @Override public void process(WatchedEvent event) { // Watcher interface if (event.getState() == KeeperState.SyncConnected) { connectedSignal.countDown(); } } public void create(String groupName) throws KeeperException, InterruptedException { String path = "/" + groupName; String createdPath = zk.create(path, null/* data */, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT); System.out.println("Created " + createdPath); } public void close() throws InterruptedException { zk.close(); } public static void main(String[] args) throws Exception { CreateGroup createGroup = new CreateGroup(); createGroup.connect(args[0]); createGroup.create(args[1]); createGroup.close(); } }
参数:localhost fan,链接本地,创建zkNode:fan。
zk支持在window下开发使用,不建议生产使用。$ZOOKEEPER_HOME/bin/zkCli.cmd -server host:port 访问zk服务器。
标签:style blog http color os java 使用 io 文件
原文地址:http://www.cnblogs.com/fanweiwei/p/3580057.html