新增 spring boot kafka 整合用例

This commit is contained in:
罗祥
2019-01-04 18:00:13 +08:00
parent 8dcfd49cb9
commit df2648e3fd
11 changed files with 335 additions and 0 deletions

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java.time.Duration类下:
private static final Pattern PATTERN =
Pattern.compile("([-+]?)P(?:([-+]?[0-9]+)D)?" +
"(T(?:([-+]?[0-9]+)H)?(?:([-+]?[0-9]+)M)?(?:([-+]?[0-9]+)(?:[.,]([0-9]{0,9}))?S)?)?",
Pattern.CASE_INSENSITIVE);
1s 1.5s 0s 0.001S 1h 2d

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.heibaiying</groupId>
<artifactId>spring-boot-kafka</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-boot-kafka</name>
<description>kakfa project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.kafka</groupId>
<artifactId>spring-kafka</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.kafka</groupId>
<artifactId>spring-kafka-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

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package com.heibaiying.springboot.Producer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.support.SendResult;
import org.springframework.stereotype.Component;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.util.concurrent.ListenableFutureCallback;
/**
* @author : heibaiying
* @description : 生产者
*/
@Component
@Slf4j
public class KafKaCustomrProducer {
@Autowired
private KafkaTemplate kafkaTemplate;
public void sendMessage(String topic, Object object) {
/*
* 这里的ListenableFuture类是spring对java原生Future的扩展增强,是一个泛型接口,用于监听异步方法的回调
* 而对于kafka send 方法返回值而言,这里的泛型所代表的实际类型就是 SendResult<K, V>,而这里K,V的泛型实际上
* 被用于ProducerRecord<K, V> producerRecord,即生产者发送消息的key,value 类型
*/
ListenableFuture<SendResult<String, Object>> future = kafkaTemplate.send(topic, object);
future.addCallback(new ListenableFutureCallback<SendResult<String, Object>>() {
@Override
public void onFailure(Throwable throwable) {
log.info("发送消息失败:" + throwable.getMessage());
}
@Override
public void onSuccess(SendResult<String, Object> sendResult) {
System.out.println("发送结果:" + sendResult.toString());
}
});
}
}

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package com.heibaiying.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootKafkaApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootKafkaApplication.class, args);
}
}

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package com.heibaiying.springboot.bean;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
import java.util.Date;
@Data
@AllArgsConstructor
@NoArgsConstructor
// 需要实现序列化接口
public class Programmer implements Serializable {
private String name;
private int age;
private float salary;
private Date birthday;
}

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package com.heibaiying.springboot.constant;
// 实际开发时建议写到配置文件中
public class Topic {
public static final String GROUP="spring.boot.kafka.group";
public static final String SIMPLE="spring.boot.kafka.simple";
public static final String BEAN="spring.boot.kafka.bean";
}

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package com.heibaiying.springboot.consumer;
import com.alibaba.fastjson.JSON;
import com.heibaiying.springboot.bean.Programmer;
import com.heibaiying.springboot.constant.Topic;
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;
/**
* @author : heibaiying
* @description : kafka 消费者
*/
@Component
@Slf4j
public class KafkaBeanConsumer {
@KafkaListener(groupId = "group", topics = Topic.BEAN)
public void consumer(ConsumerRecord<String, Object> record) {
System.out.println("消费者收到消息:" + JSON.parseObject(record.value().toString(), Programmer.class));
}
}

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package com.heibaiying.springboot.consumer;
import com.heibaiying.springboot.constant.Topic;
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;
/**
* @author : heibaiying
* @description : kafka 消费者组
*
* 多个消费者群组可以共同读取同一个主题,彼此之间互不影响。
* 但主题的一个分区只能被同一个消费者群组里面的一个消费者读取。
*/
@Component
@Slf4j
public class KafkaGroupConsumer {
// 分组1 中的消费者1
@KafkaListener(id = "consumer1-1", groupId = "group1", topics = Topic.GROUP)
public void consumer1_1(ConsumerRecord<String, Object> record) {
System.out.println("consumer1-1 收到消息:" + record.value());
}
// 分组1 中的消费者2
@KafkaListener(id = "consumer1-2", groupId = "group1", topics = Topic.GROUP)
public void consumer1_2(ConsumerRecord<String, Object> record) {
System.out.println("consumer1-2 收到消息:" + record.value());
}
// 分组2 中的消费者
@KafkaListener(id = "consumer2-1", groupId = "group2", topics = Topic.GROUP)
public void consumer2_1(ConsumerRecord<String, Object> record) {
System.out.println("consumer2-1 收到消息:" + record.value());
}
}

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package com.heibaiying.springboot.consumer;
import com.heibaiying.springboot.constant.Topic;
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.KafkaHeaders;
import org.springframework.messaging.handler.annotation.Header;
import org.springframework.stereotype.Component;
/**
* @author : heibaiying
* @description : kafka 简单消息消费者
*/
@Component
@Slf4j
public class KafkaSimpleConsumer {
// 简单消费者
@KafkaListener(groupId = "group",topics = Topic.SIMPLE)
public void consumer1_1(ConsumerRecord<String, Object> record, @Header(KafkaHeaders.RECEIVED_TOPIC) String topic) {
System.out.println("消费者收到消息:" + record.value() + "; topic:" + topic);
}
}

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spring:
kafka:
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bootstrap-servers: 127.0.0.1:9092
producer:
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retries: 0
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batch-size: 16384
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buffer-memory: 33554432
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key-serializer: org.apache.kafka.common.serialization.StringSerializer
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value-serializer: org.apache.kafka.common.serialization.StringSerializer
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acks: all
consumer:
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auto-commit-interval: 1S
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auto-offset-reset: earliest
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enable-auto-commit: true
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key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
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value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
listener:
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concurrency: 5

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package com.heibaiying.springboot;
import com.alibaba.fastjson.JSON;
import com.heibaiying.springboot.Producer.KafKaCustomrProducer;
import com.heibaiying.springboot.bean.Programmer;
import com.heibaiying.springboot.constant.Topic;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.Date;
@RunWith(SpringRunner.class)
@SpringBootTest
public class KafkaTests {
@Autowired
private KafKaCustomrProducer producer;
/***
* 发送消息体为基本类型的消息
*/
@Test
public void sendSimple() {
producer.sendMessage(Topic.SIMPLE, "hello spring boot kafka");
}
/***
* 发送消息体为bean的消息
*/
@Test
public void sendBean() {
Programmer programmer = new Programmer("xiaoming", 12, 21212.33f, new Date());
producer.sendMessage(Topic.BEAN, JSON.toJSON(programmer).toString());
}
/***
* 多消费者组、组中多消费者对同一主题的消费情况
*/
@Test
public void sendGroup() {
for (int i = 0; i < 5; i++) {
producer.sendMessage(Topic.GROUP, "hello group " + i);
}
}
}