编程启动zookeeper和kafka broker

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本文介绍了一种快速启动Kafka和Zookeeper的方法，通过使用Java main函数直接启动，避免了标准部署流程的繁琐。文章提供了必要的Maven依赖配置，包括Dropwizard Metrics、Kafka和Zookeeper的版本信息，并分享了Zookeeper和Kafka Broker的启动类代码。

为了学习或者快速测试，走标准的部署流程用命令行启动太慢，可以直接用java main函数启动

maven 依赖

        <!-- https://mvnrepository.com/artifact/io.dropwizard.metrics/metrics-core -->
        <dependency>
            <groupId>io.dropwizard.metrics</groupId>
            <artifactId>metrics-core</artifactId>
            <version>4.1.9</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.apache.kafka/kafka -->
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.13</artifactId>
            <version>2.5.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.kafka/kafka-clients -->
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka-clients</artifactId>
            <version>2.5.0</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper -->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.6.1</version>
        </dependency>

配置文件下载链接

zookeeper.properties

server.properties

zookeeper启动类（必须先运行）

public class ZooKeeperMain {

    @SneakyThrows
    public static void main(String[] args) {

        QuorumPeerConfig config = new QuorumPeerConfig();
        InputStream is = ZooKeeperMain.class.getResourceAsStream("/zookeeper.properties");
        Properties p = new Properties();
        p.load(is);
        config.parseProperties(p);
        ServerConfig serverconfig = new ServerConfig();
        serverconfig.readFrom(config);
        new ZooKeeperServerMain().runFromConfig(serverconfig);
    }
}

kafkabroker启动类（必须在ZookeeperMain之后运行）

public class KafkaBrokerMain {

    @SneakyThrows
    public static void main(String[] args) {
        InputStream is = KafkaBrokerMain.class.getResourceAsStream("/server.properties");
        Properties p = new Properties();
        p.load(is);
        is.close();
        KafkaServerStartable kafkaServerStartable = KafkaServerStartable.fromProps(p);
        kafkaServerStartable.startup();
        kafkaServerStartable.awaitShutdown();
    }
}