@Test
 public void testAclServer() {
  List<ACL> acls = new ArrayList<ACL>(2);
  try {
   Id id1 = new Id("digest", DigestAuthenticationProvider.generateDigest("fish:fishpw"));
   ACL acl1 = new ACL(ZooDefs.Perms.WRITE, id1);
   Id id2 = new Id("digest", DigestAuthenticationProvider.generateDigest("qsd:qsdpw"));
   ACL acl2 = new ACL(ZooDefs.Perms.READ, id2);
   acls.add(acl1);
   acls.add(acl2);
   // 所有用户都有权限
   // Id world = new Id("world", "anyone");
   // ACL worldAcl = new ACL(ZooDefs.Perms.READ, world);
   // acls.add(worldAcl);
   // 10.0.2.76是本机IP
   // Id id3 = new Id("ip", "10.0.2.76");
   // ACL acl3 = new ACL(ZooDefs.Perms.WRITE, id3);
   // acls.add(acl3);
  } catch (NoSuchAlgorithmException e1) {
   e1.printStackTrace();
  }
  ZooKeeper zk = null;
  try {
   zk = new ZooKeeper("10.0.1.75:2181,10.0.1.76:2181,10.0.1.77:2181", 300000, new Watcher() {
    // 监控所有被触发的事件
    public void process(WatchedEvent event) {
     System.out.println("已经触发了" + event.getType() + "事件！");
    }
   });
   if (zk.exists("/test", true) == null) {
    System.out.println(zk.create("/test", "ACL测试".getBytes(), acls, CreateMode.PERSISTENT));
   }
  } catch (IOException e) {
   e.printStackTrace();
  } catch (KeeperException e1) {
   e1.printStackTrace();
  } catch (InterruptedException e1) {
   e1.printStackTrace();
  }
 }
 @Test
 public void testAclClient() {
  try {
   ZooKeeper zk = new ZooKeeper("10.0.1.75:2181,10.0.1.76:2181,10.0.1.77:2181", 300000, new Watcher() {
    // 监控所有被触发的事件
    public void process(WatchedEvent event) {
     System.out.println("已经触发了" + event.getType() + "事件！");
    }
   });
   // 只有写权限
   zk.addAuthInfo("digest", "fish:fishpw".getBytes());
   // 只有读权限
   zk.addAuthInfo("digest", "qsd:qsdpw".getBytes());
   System.out.println(new String(zk.getData("/test", null, null)));
   zk.setData("/test", "I change！".getBytes(), -1);
  } catch (KeeperException e) {
   e.printStackTrace();
  } catch (InterruptedException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
 }