Zookeeper基础教程（六）：.net core使用Zookeeper

　　Demo代码已提交到gitee，感兴趣的更有可以直接克隆使用，地址：https://gitee.com/shanfeng1000/dotnetcore-demo/tree/master/Zookeeper

　　.net core要使用Zookeeper，我们还是推荐使用ZooKeeperNetEx这个插件，先在nuget中搜索安装ZooKeeperNetEx，然后可以在Startup类中直接使用ZooKeeperNetEx连接Zookeeper获取数据，也可以使用前面章节中介绍的ZookeeperHelper辅助类来操作，本文也是以这个Zookeeper辅助类来作为工具，将Zookeeper作为一个配置源，从而将它集成到.net core的Configuration-option配置中。

　　博主使用的是.net core2.2的版本，不过对2.*和3.*区别不大。

　　首先贴出简单的项目文件结构：

　　

 　　其中，Configurations目录下的一系列Zookeeper开头的文件是集成Zookeeper所需的类，下面单独介绍，首先从我们前面的文章中得到ZookeeperHelper这个辅助类：Zookeeper基础教程（四）：C#连接使用Zookeeper

　　ZookeeperConfigurationExtensions是一个拓展类，最终使用的是这个类的拓展方法去集成Zookeeper到Configuration配置源中

　　

    public static class ZookeeperConfigurationExtensions
    {
        /// <summary>
        /// 添加Zookeeper配置
        /// </summary>
        /// <param name="builder"></param>
        /// <param name="configure"></param>
        public static IConfigurationBuilder AddZookeeper(this IConfigurationBuilder builder, Action<ZookeeperOptions> configure)
        {
            var options = new ZookeeperOptions();
            configure?.Invoke(options);
            return builder.AddZookeeper(options);
        }
        /// <summary>
        /// 添加Zookeeper配置
        /// </summary>
        /// <param name="builder"></param>
        /// <param name="zookeeperOptions"></param>
        public static IConfigurationBuilder AddZookeeper(this IConfigurationBuilder builder, ZookeeperOptions zookeeperOptions)
        {
            ZookeeperConfigurationSource zookeeperConfigurationSource = new ZookeeperConfigurationSource(zookeeperOptions);
            builder.Add(zookeeperConfigurationSource);
            return builder;
        }
        /// <summary>
        /// 添加Zookeeper配置
        /// </summary>
        /// <param name="builder"></param>
        /// <param name="configure"></param>
        /// <returns></returns>
        public static IHostBuilder UseZookeeper(this IHostBuilder builder, Action<ZookeeperOptions> configure)
        {
            var options = new ZookeeperOptions();
            configure?.Invoke(options);
            return builder.UseZookeeper(options);
        }
        /// <summary>
        /// 添加Zookeeper配置
        /// </summary>
        /// <param name="builder"></param>
        /// <param name="zookeeperOptions"></param>
        /// <returns></returns>
        public static IHostBuilder UseZookeeper(this IHostBuilder builder, ZookeeperOptions zookeeperOptions)
        {
            return builder.ConfigureAppConfiguration((_, cbuilder) => cbuilder.AddZookeeper(zookeeperOptions));
        }
    }

ZookeeperConfigurationExtensions