KAFKA生产者实现

如何编写一个kafka生产者？

1、pom文件中导入

    org.apache.kafka
    kafka_2.12
    2.1.1


    org.projectlombok
    lombok
    provided

2、yml配置文件中加入kafka配置

spring:
  kafka:
    producer:
      bootstrap-servers: ip:prot
      batch-size: 16384
      retries: 0
      buffer-memory: 33554432
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer

3、新建一个类

@Component
public class KafkaProducerTest implements Runnable {

    private KafkaProducer kafkaProducer;
    private final String topic = "test_producer";
    @Value("${spring.kafka.producer.bootstrap-servers}")
    private String address;
    @Value("${spring.kafka.producer.key-serializer}")
    private String key;
    @Value("${spring.kafka.producer.value-serializer}")
    private String value;

    private Properties initProperties() {
        // zookeeper 配置
        Properties props = new Properties();
        props.put("bootstrap.servers", address);
        // group 代表一个消费组
        props.put("group.id", "kafkaProducer");
        props.put("session.timeout.ms", "30000");
        // 往zookeeper上写offset的频率
        props.put("auto.commit.interval.ms", "1000");
        // key的反序列化类型
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
                "org.apache.kafka.common.serialization.StringSerializer");
        // 设置value的反序列化类型
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,
                "org.apache.kafka.common.serialization.StringSerializer");
        return props;

    }

    public void senMessage(int key, String value) {
        kafkaProducer.send(new ProducerRecord(topic, value));
    }
    //开启线程，往kfaka中插入一百万数据
    public void run() {
        kafkaProducer = new KafkaProducer(initProperties());
        boolean result = true;
        int i = 0;
        while (result) {
            i++;
            senMessage(i, "这是第" + i + "条数据。");
            if (i > 1000000) {
                result = false;
            }
        }
        System.out.println("共插入数量：" + i);
    }