.net windows Kafka 安装与使用入门(入门笔记)

【备注：kafka相关的入门，使用demo资料来源于互联网！本文是根据实际实践成功安装使用经验的总结，：）】

完整解决方案请参考：

1. 安装JDK

1.1 安装文件：http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html下载Server JRE.
1.2 安装完成后需要添加以下的环境变量（右键点击“我的电脑” -> "高级系统设置" -> "环境变量" ）：

• • JAVA_HOME: C:\Program Files (x86)\Java\jre1.8.0_60（这个是默认安装路径，如果安装过程中更改了安装目录，把更改后的路径填上就行了）

• • PATH: 在现有的值后面添加"; %JAVA_HOME%\bin"

1.3 打开cmd运行 "java -version" 查看当前系统Java的版本：

2. 安装Zookeeper

Kafka的运行依赖于Zookeeper，所以在运行Kafka之前我们需要安装并运行Zookeeper

zkserver

3. 安装并运行Kafka

.\bin\windows\kafka-server-start.bat .\config\server.properties

4. 创建topics

kafka-topics.bat --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test

cd /d G:\kafka_2.11-0.10.0.1\bin\windows

kafka-console-producer.bat --broker-list localhost:9092 --topic test

cd /d G:\kafka_2.11-0.10.0.1\bin\windows

kafka-console-consumer.bat --zookeeper localhost:2181 --topic test

至此，Kafka运行环境的搭建就完成了:-)

web管理方面（正式运维部署）：

网上有人说 kafka manage

.net sdk方面：

有人建议:https://github.com/Microsoft/CSharpClient-for-Kafka （微软提供的sdk，看了源码个人感觉有些复杂）

还有
kafka-net 这个感觉会简单很多（看了源码感觉一些Task写法并不喜欢）

推荐:kafka-net 简单易用些。

地址: https://github.com/Jroland/kafka-net

以上sdk 可以搜索nuget 查看开源地址和最新release包,当然.net sdk 还有很多其他选择。

个人开发工具（windows支持），windows 开发环境使用

kafkaTool

下载地址: http://www.kafkatool.com/download.html

kafka-net sdk使用demo

详细请查看官方开源地址的demo: https://github.com/Jroland/kafka-net

KafkaProducer程序:

class Program

    {

        static void Main(string[] args)

        {

            do

            {

                Produce(GetKafkaBroker(), getTopicName());

                System.Threading.Thread.Sleep(3000);

            } while (true);

        }
private static void Produce(string broker, string topic)

        {

            var options = new KafkaOptions(new Uri(broker));

            var router = new BrokerRouter(options);

            var client = new Producer(router);
var currentDatetime =DateTime.Now;

            var key = currentDatetime.Second.ToString();

            var events = new[] { new Message("Hello World " + currentDatetime, key) };

            client.SendMessageAsync(topic, events).Wait(1500);

            Console.WriteLine("Produced: Key: {0}. Message: {1}", key, events[0].Value.ToUtf8String());
using (client) { }

        }
private static string GetKafkaBroker()

        {

            string KafkaBroker = string.Empty;

            const string kafkaBrokerKeyName = "KafkaBroker";
if (!ConfigurationManager.AppSettings.AllKeys.Contains(kafkaBrokerKeyName))

            {

                KafkaBroker = "http://localhost:9092";

            }

            else

            {

                KafkaBroker = ConfigurationManager.AppSettings[kafkaBrokerKeyName];

            }

            return KafkaBroker;

        }

        private static string getTopicName()

        {

            string TopicName = string.Empty;

            const string topicNameKeyName = "Topic";
if (!ConfigurationManager.AppSettings.AllKeys.Contains(topicNameKeyName))

            {

                throw new Exception("Key \"" + topicNameKeyName + "\" not found in Config file -> configuration/AppSettings");

            }

            else

            {

                TopicName = ConfigurationManager.AppSettings[topicNameKeyName];

            }

            return TopicName;

        }

    }

4.KafkaConsumer程序:

class Program

    {

        static void Main(string[] args)

        {

            Consume(getKafkaBroker(), getTopicName());
}
private static void Consume(string broker, string topic)

        {

            var options = new KafkaOptions(new Uri(broker));

            var router = new BrokerRouter(options);

            var consumer = new Consumer(new ConsumerOptions(topic, router));
//Consume returns a blocking IEnumerable (ie: never ending stream)

            foreach (var message in consumer.Consume())

            {

                Console.WriteLine("Response: Partition {0},Offset {1} : {2}",

                    message.Meta.PartitionId, message.Meta.Offset, message.Value.ToUtf8String());

            }

        }
private static string getKafkaBroker()

        {

            string KafkaBroker = string.Empty;

            var KafkaBrokerKeyName = "KafkaBroker";
if (!ConfigurationManager.AppSettings.AllKeys.Contains(KafkaBrokerKeyName))

            {

                KafkaBroker = "http://localhost:9092";

            }

            else

            {

                KafkaBroker = ConfigurationManager.AppSettings[KafkaBrokerKeyName];

            }

            return KafkaBroker;

        }
private static string getTopicName()

        {

            string TopicName = string.Empty;

            var TopicNameKeyName = "Topic";
if (!ConfigurationManager.AppSettings.AllKeys.Contains(TopicNameKeyName))

            {

                throw new Exception("Key \"" + TopicNameKeyName + "\" not found in Config file -> configuration/AppSettings");

            }

            else

            {

                TopicName = ConfigurationManager.AppSettings[TopicNameKeyName];

            }

            return TopicName;

        }

    }

5.Consumer结果: