Created
February 7, 2022 19:23
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package com.kiddcorp; | |
import org.apache.kafka.clients.consumer.Consumer; | |
import org.apache.kafka.clients.consumer.ConsumerRecord; | |
import org.apache.kafka.clients.consumer.ConsumerRecords; | |
import org.apache.kafka.clients.consumer.KafkaConsumer; | |
import org.apache.kafka.clients.consumer.ConsumerConfig; | |
import org.apache.avro.generic.GenericRecord; | |
import java.io.FileInputStream; | |
import java.io.IOException; | |
import java.io.InputStream; | |
import java.nio.file.Files; | |
import java.nio.file.Paths; | |
import java.util.Arrays; | |
import java.util.Properties; | |
import java.util.Random; | |
public class AvroConsumer { | |
public static void main(String[] args) { | |
Properties props = new Properties(); | |
props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092"); | |
props.put(ConsumerConfig.GROUP_ID_CONFIG, "group1"); | |
props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringDeserializer"); | |
props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, "io.confluent.kafka.serializers.KafkaAvroDeserializer"); | |
props.put("schema.registry.url", "http://localhost:8081"); | |
props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); | |
String topic = "topic1"; | |
final Consumer < String, GenericRecord > consumer = new KafkaConsumer < String, GenericRecord > (props); | |
consumer.subscribe(Arrays.asList(topic)); | |
try { | |
while (true) { | |
ConsumerRecords < String, GenericRecord > records = consumer.poll(100); | |
for (ConsumerRecord < String, GenericRecord > record: records) { | |
System.out.printf("offset = %d, key = %s, value = %s \n", record.offset(), record.key(), record.value()); | |
} | |
} | |
} finally { | |
consumer.close(); | |
} | |
} | |
} |
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