Zookeeper:JavaApi更新、删除、读取节点

/**
         * 三个参数
         * the path of the node
         * the data to set
         * the expected matching version
         */
        Stat stat = zooKeeper.setData("/set/node1", "NODE1".getBytes(), 1);

zooKeeper.setData("/set/node1", "nnn".getBytes(), -1, new AsyncCallback.StatCallback() {
            public void processResult(int rc, String path, Object ctx, Stat stat) {
                System.out.println(rc);//0代表修改成功
                System.out.println(path);//节点路径
                System.out.println(ctx);//上下文参数
                System.out.println(stat);//属性描述对象
            }
        },"ctx");

        /**
         * @param path
         *       the path of the node to be deleted.
         *  @param version
         *       the expected node version. 当为-1时，表示不考虑当前节点的版本信息。
        */
        zooKeeper.delete("/delete/node1",0);

        //VoidCallback：异步回调接口
        zooKeeper.delete("/delete/node2", -1, new AsyncCallback.VoidCallback() {
            public void processResult(int rc, String path, Object ctx) {
                System.out.println(rc);//0表示删除成功
                System.out.println(path);//节点路径
                System.out.println(ctx);//上下文信息
            }
        },"ctx");

getData(String path,boolean b,Stat stat)   同步方式
getData(String path,boolean b,AsyncCallback.DataCallback callBack,Object ctx)  异步方式

List getChildren(String path,boolean b)   同步方式

List getChildren(String path,boolean b,AsyncCallback.DataCallback callBack,Object ctx) 异步方式

Stat exist(String path,boolean b)   同步方式
Stat exist(String path,boolean b,AsyncCallback.DataCallback callBack,Object ctx) 异步方式