Curator使用demo

package zookeeper;import org.apache.curator.RetryPolicy;import org.apache.curator.framework.CuratorFramework;import org.apache.curator.framework.CuratorFrameworkFactory;import org.apache.curator.retry.ExponentialBackoffRetry;import org.junit.Test;public class Curator {    @Test    public void testClient() throws Exception {        CuratorFramework client = null;        client = createSimple("127.0.0.1:2181,127.0.0.2:2181,127.0.0.3:2181");        client.start();        byte[] bs = client.getData().forPath("/jianghuiwen");        System.out.println(new String(bs));        //client.create().forPath("/fwcheduler","my".getBytes());        //client.create().forPath("/jianghuiwen", "my".getBytes());    }    public static CuratorFramework createSimple(String connectionString) {        // these are reasonable arguments for the ExponentialBackoffRetry.         // The first retry will wait 1 second - the second will wait up to 2 seconds - the        // third will wait up to 4 seconds.        ExponentialBackoffRetry retryPolicy = new ExponentialBackoffRetry(1000, 3);        // The simplest way to get a CuratorFramework instance. This will use default values.        // The only required arguments are the connection string and the retry policy        return CuratorFrameworkFactory.newClient(connectionString, retryPolicy);    }    public static CuratorFramework createWithOptions(String connectionString, RetryPolicy retryPolicy, int connectionTimeoutMs, int sessionTimeoutMs) {        // using the CuratorFrameworkFactory.builder() gives fine grained control        // over creation options. See the CuratorFrameworkFactory.Builder javadoc details        return CuratorFrameworkFactory.builder().connectString(connectionString)                .retryPolicy(retryPolicy)                .connectionTimeoutMs(connectionTimeoutMs)                .sessionTimeoutMs(sessionTimeoutMs)                // etc. etc.                .build();    }}

<dependency>      <groupId>org.apache.curator</groupId>      <artifactId>curator-recipes</artifactId>      <version>2.3.0</version>    </dependency><dependency>      <groupId>org.apache.zookeeper</groupId>      <artifactId>zookeeper</artifactId>      <version>3.5.2-alpha</version>    </dependency>