|NO.Z.00012|——————————|BigDataEnd|——|Hadoop&kafka.V12|——|kafka.v12|spring_kafka实战.v02|

一、spring_boot编程代码实现
### --- Demo02SpringbootApplication.java

package com.yanqi.kafka.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Demo02SpringbootKafkaApplication {

    public static void main(String[] args) {
        SpringApplication.run( Demo02SpringbootKafkaApplication.class, args );
    }

}
### --- KafkaSyncProducerController.java

package com.yanqi.kafka.demo.controller;

import org.apache.kafka.clients.producer.RecordMetadata;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.support.SendResult;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.ExecutionException;

@RestController
public class KafkaSyncProducerController {

    @Autowired
    private KafkaTemplate<Integer, String> template;

    @RequestMapping("send/sync/{message}")
    public String send(@PathVariable String message) {

        final ListenableFuture<SendResult<Integer, String>> future = template.send("topic-spring-01", 0, 0, message);
        // 同步发送消息
        try {
            final SendResult<Integer, String> sendResult = future.get();
            final RecordMetadata metadata = sendResult.getRecordMetadata();

            System.out.println(metadata.topic() + "\t" + metadata.partition() + "\t" + metadata.offset());

        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (ExecutionException e) {
            e.printStackTrace();
        }

        return "success";
    }

}
### --- KafkaAsyncProducerController

package com.yanqi.kafka.demo.controller;

import org.apache.kafka.clients.producer.RecordMetadata;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.support.SendResult;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.util.concurrent.ListenableFutureCallback;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class KafkaAsyncProducerController {

    @Autowired
    private KafkaTemplate<Integer, String> template;


    @RequestMapping("send/async/{message}")
    public String send(@PathVariable String message) {

        final ListenableFuture<SendResult<Integer, String>> future = this.template.send("topic-spring-01", 0, 1, message);

        // 设置回调函数，异步等待broker端的返回结果
        future.addCallback(new ListenableFutureCallback<SendResult<Integer, String>>() {
            @Override
            public void onFailure(Throwable throwable) {
                System.out.println("发送消息失败：" + throwable.getMessage());
            }

            @Override
            public void onSuccess(SendResult<Integer, String> result) {
                final RecordMetadata metadata = result.getRecordMetadata();

                System.out.println("发送消息成功：" + metadata.topic() + "\t" + metadata.partition() + "\t" + metadata.offset());
            }
        });

        return "success";
    }

}
### --- MyConsumer.java

package com.yanqi.kafka.demo.consumer;

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

@Component
public class MyConsumer {

    @KafkaListener(topics = "topic-spring-01")
    public void onMessage(ConsumerRecord<Integer, String> record) {
        System.out.println("消费者收到的消息："
                + record.topic() + "\t"
                + record.partition() + "\t"
                + record.offset() + "\t"
                + record.key() + "\t"
                + record.value());
    }

}
二、编译打印
### --- 查看topic_1主题下数据

~~~     # 没有topic_pring-01主题
[root@hadoop ~]# kafka-topics.sh --zookeeper localhost:2181/myKafka --list
__consumer_offsets
topic_1
~~~     # 运行之后创建topic_spring-01主题

[root@hadoop ~]# kafka-topics.sh --zookeeper localhost:2181/myKafka --list
__consumer_offsets
topic-spring-01
topic_1
~~~     # 查看主题的详细信息

[root@hadoop ~]# kafka-topics.sh --zookeeper localhost:2181/myKafka --describe --topic topic-spring-01
Topic:topic-spring-01   PartitionCount:1    ReplicationFactor:1 Configs:
    Topic: topic-spring-01  Partition: 0    Leader: 0   Replicas: 0 Isr: 0
### --- 编译运行Demo02SpringbootKafkaApplication

D:\JAVA\jdk1.8.0_231\bin\java.exe -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar=52915:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\bin" -Dfile.encoding=UTF-8 -classpath D:\JAVA\jdk1.8.0_231\jre\lib\charsets.jar;D:\JAVA\jdk1.8.0_231\jre\lib\deploy.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\access-bridge-64.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\cldrdata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\dnsns.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jaccess.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jfxrt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\localedata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\nashorn.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunec.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunjce_provider.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunmscapi.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunpkcs11.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\zipfs.jar;D:\JAVA\jdk1.8.0_231\jre\lib\javaws.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jce.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfr.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfxswt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jsse.jar;D:\JAVA\jdk1.8.0_231\jre\lib\management-agent.jar;D:\JAVA\jdk1.8.0_231\jre\lib\plugin.jar;D:\JAVA\jdk1.8.0_231\jre\lib\resources.jar;D:\JAVA\jdk1.8.0_231\jre\lib\rt.jar;E:\NO.Z.10000——javaproject\NO.Z.00002.Hadoop\kafka_demo\demo-02-springboot-kafka\target\classes;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.5.4\spring-boot-starter-web-2.5.4.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter\2.5.4\spring-boot-starter-2.5.4.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot\2.5.4\spring-boot-2.5.4.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.5.4\spring-boot-autoconfigure-2.5.4.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.5.4\spring-boot-starter-logging-2.5.4.jar;C:\Users\Administrator\.m2\repository\ch\qos\logback\logback-classic\1.2.5\logback-classic-1.2.5.jar;C:\Users\Administrator\.m2\repository\ch\qos\logback\logback-core\1.2.5\logback-core-1.2.5.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.14.1\log4j-to-slf4j-2.14.1.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.14.1\log4j-api-2.14.1.jar;C:\Users\Administrator\.m2\repository\org\slf4j\jul-to-slf4j\1.7.32\jul-to-slf4j-1.7.32.jar;C:\Users\Administrator\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.28\snakeyaml-1.28.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.5.4\spring-boot-starter-json-2.5.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.12.4\jackson-databind-2.12.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.12.4\jackson-annotations-2.12.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.12.4\jackson-core-2.12.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.12.4\jackson-datatype-jdk8-2.12.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.12.4\jackson-datatype-jsr310-2.12.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.12.4\jackson-module-parameter-names-2.12.4.jar;C:\Users\Administrator\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.5.4\spring-boot-starter-tomcat-2.5.4.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.52\tomcat-embed-core-9.0.52.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.52\tomcat-embed-el-9.0.52.jar;C:\Users\Administrator\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.52\tomcat-embed-websocket-9.0.52.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-web\5.3.9\spring-web-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-beans\5.3.9\spring-beans-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-webmvc\5.3.9\spring-webmvc-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-aop\5.3.9\spring-aop-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-expression\5.3.9\spring-expression-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\kafka\spring-kafka\2.7.6\spring-kafka-2.7.6.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-context\5.3.9\spring-context-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-messaging\5.3.9\spring-messaging-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-tx\5.3.9\spring-tx-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\retry\spring-retry\1.3.1\spring-retry-1.3.1.jar;C:\Users\Administrator\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;C:\Users\Administrator\.m2\repository\org\apache\kafka\kafka-clients\2.7.1\kafka-clients-2.7.1.jar;C:\Users\Administrator\.m2\repository\com\github\luben\zstd-jni\1.4.5-6\zstd-jni-1.4.5-6.jar;C:\Users\Administrator\.m2\repository\org\lz4\lz4-java\1.7.1\lz4-java-1.7.1.jar;C:\Users\Administrator\.m2\repository\org\xerial\snappy\snappy-java\1.1.7.7\snappy-java-1.1.7.7.jar;C:\Users\Administrator\.m2\repository\org\slf4j\slf4j-api\1.7.32\slf4j-api-1.7.32.jar;C:\Users\Administrator\.m2\repository\com\google\code\findbugs\jsr305\3.0.2\jsr305-3.0.2.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-core\5.3.9\spring-core-5.3.9.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-jcl\5.3.9\spring-jcl-5.3.9.jar com.yanqi.kafka.demo.Demo02SpringbootKafkaApplication

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.5.4)
2021-09-19 23:11:50.425  INFO 13080 --- [nio-8080-exec-2] o.a.kafka.common.utils.AppInfoParser     : Kafka version: 2.7.1
2021-09-19 23:11:50.425  INFO 13080 --- [nio-8080-exec-2] o.a.kafka.common.utils.AppInfoParser     : Kafka commitId: 61dbce85d0d41457
2021-09-19 23:11:50.425  INFO 13080 --- [nio-8080-exec-2] o.a.kafka.common.utils.AppInfoParser     : Kafka startTimeMs: 1632064310425
2021-09-19 23:11:50.436  INFO 13080 --- [ad | producer-1] org.apache.kafka.clients.Metadata        : [Producer clientId=producer-1] Cluster ID: cSv3zVYgQdGy46ytdxPBhA
~~~     # 消费者发送消息输出参数
消费者收到的消息：topic-spring-01    0   1   0   hello yanqi

消费者收到的消息：topic-spring-01    0   0   1   hello yanqi 111
发送消息成功：topic-spring-01  0   0
topic-spring-01 0   1
### --- 通过浏览器发送消息

~~~     # 同步发送消息
http://localhost:8080/send/sync/hello%20yanqi
~~返回参数success

~~~编程代码返回参数
消费者收到的消息：topic-spring-01    0   1   0   hello yanqi
~~~     # 异步发送消息
http://localhost:8080/send/async/hello%20yanqi%20111
~~返回参数success


~~~编程代码返回参数
消费者收到的消息：topic-spring-01    0   0   1   hello yanqi 111
发送消息成功：topic-spring-01  0   0
 
 
 
 
 
 
 
 
 
Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart
                                                                                                                                                   ——W.S.Landor
 

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相关博文：
· |NO.Z.00011|——————————|BigDataEnd|——|Hadoop&kafka.V11|——|kafka.v11|spring_kafka实战.v01|
· |NO.Z.00010|——————————|BigDataEnd|——|Hadoop&kafka.V10|——|kafka.v10|生产与消费.v05|模拟消息推送偏移量|
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