java 向kafka推送消息

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.serialization.IntegerSerializer;
import org.apache.kafka.common.serialization.StringSerializer;
import com.alibaba.fastjson.JSONObject;
import java.util.Properties;

public class Producer {

    public static void main(String[] args)  {

        KafkaProducer producer;
        //设置topic消息主题
        String topic = "test";
        Properties properties = new Properties();
        //设置推送的kafka地址
        properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "127.0.0.1:9092");
        properties.put(ProducerConfig.CLIENT_ID_CONFIG, "producer");
        properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, IntegerSerializer.class.getName());
        properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        producer = new KafkaProducer(properties);


        //设置推送的json
        JSonObject requestMap=new JSonObject();       
        requestMap.put("reqseno","123456789");


        //推送消息至kafka
        producer.send(new ProducerRecord<>(topic, 3, requestMap.toString()));


        producer.close();
    }
}

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