spring boot + kafka 使用详细步骤[通俗易懂]

大家好，又见面了，我是你们的朋友全栈君。

一,Kafka的安装以及配置

1.下载文件

wget http://mirror.bit.edu.cn/apache/kafka/0.11.0.0/kafka_2.11-0.11.0.0.tgz

2.安装

tar xzvf kafka_2.11-0.11.0.0.tgz -C /usr/local/

3.配置(服务器在阿里云ECS上)

vi %kafka_home%/server.properties

############################# Server Basics #############################
broker.id=0
port=9092
host.name=阿里云内网ip
advertised.host.name=阿里云外网ip
delete.topic.enable=true

....其他的配置不变

二,Spring boot操作Kafka

1.Spring boot pom依赖

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.6.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

2.kafka依赖

 <!--kafka支持-->
<dependency>
    <groupId>org.springframework.kafka</groupId>
    <artifactId>spring-kafka</artifactId>
</dependency>

3.kafka配置

#kafka相关配置
spring.kafka.bootstrap-servers=阿里云外网ip:9092
#设置一个默认组
spring.kafka.consumer.group-id=defaultGroup
#key-value序列化反序列化
spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer
spring.kafka.consumer.value-deserializer=org.apache.kafka.common.serialization.StringDeserializer
spring.kafka.producer.key-serializer=org.apache.kafka.common.serialization.StringSerializer
spring.kafka.producer.value-serializer=org.apache.kafka.common.serialization.StringSerializer
spring.kafka.producer.batch-size=65536
spring.kafka.producer.buffer-memory=524288

4.kafka发送代码

@Component
public class KafkaSender {
    @Autowired
    private KafkaTemplate kafkaTemplate;

    /**
     * 发送消息到kafka,主题为test
     */
    public void sendTest(){
        kafkaTemplate.send("test","hello,kafka  "  + LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS")));
    }
}

5.Kafka消费代码

public class KafkaConsumer {

    /**
     * 监听test主题,有消息就读取
     * @param message
     */
    @KafkaListener(topics = {"test"})
    public void consumer(String message){
        log.info("test topic message : {}", message);
    }
}

6,启动测试代码

@SpringBootApplication
@EnableScheduling
public class ServerApplication {
    @Autowired
    private KafkaSender kafkaSender;


    public static void main(String[] args) {
        SpringApplication.run(ServerApplication.class, args);
    }

    //然后每隔1分钟执行一次
    @Scheduled(fixedRate = 1000 * 60)
    public void testKafka() throws Exception {
        kafkaSender.sendTest();
    }
}

三,以上就是完整的spring boot整合Kafka消息队列的步骤.