springboot integrates kafka-notes
Configure pom.xml
Here my springboot version is 2.3.8.RELEASE, and the kafka-mq version used is 2.12
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>2.3.8.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.kafka</groupId>
<artifactId>spring-kafka</artifactId>
<version>2.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>2.3.1</version>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.kafka</groupId>
<artifactId>spring-kafka</artifactId>
<version>2.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>2.3.1</version>
</dependency>
</dependencies>
Configure application.yml
spring:
kafka:
bootstrap-servers: 10.1.5.212:9092
Configure EnableKafka annotation
@EnableKafka
@EnableScheduling
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class,args);
}
}
Define kafka message producer
package cn.test.kafka;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;
@Slf4j
@Service
public class KafkaProducerService {
@Autowired
private KafkaTemplate<String, String> kafkaTemplate;
private String topic= "my816topic";
public void sendMessage(String message){
log.info("向kafka发送消息:{}",message);
kafkaTemplate.send(topic,message);
}
}
Define kafka message consumer
package cn.test.kafka;
import lombok.extern.slf4j.Slf4j;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Service;
@Slf4j
@Service
public class KafkaConsumerService {
@KafkaListener(topics = "my816topic",groupId = "mygroup")
public void listen(String message){
log.info("rec msg:{}",message);
}
}
Test sending kafka message
@Component
@Slf4j
public class TestJob {
@Autowired
private ObjectMapper objectMapper;
@Autowired
private KafkaProducerService kafkaProducerService;
@Scheduled(cron = "0/13 * * * * ?")
public void hwreg() {
String s = null;
try {
s = objectMapper.writeValueAsString(new CityInfo("hefei"+System.currentTimeMillis(), 117.17, 31.52));
} catch (JsonProcessingException e) {
e.printStackTrace();
}
//测试发送字符串消息
kafkaProducerService.sendMessage(s);
}
Test sending kafka message-console log
2023-08-16 19:16:50,832 INFO [17324] [main] [] o.a.k.c.c.ConsumerConfig [AbstractConfig.java : 347] ConsumerConfig values:
allow.auto.create.topics = true
auto.commit.interval.ms = 5000
auto.offset.reset = latest
bootstrap.servers = [10.1.5.212:9092]
check.crcs = true
client.dns.lookup = default
client.id =
client.rack =
connections.max.idle.ms = 540000
default.api.timeout.ms = 60000
enable.auto.commit = false
exclude.internal.topics = true
fetch.max.bytes = 52428800
fetch.max.wait.ms = 500
fetch.min.bytes = 1
group.id = mygroup
group.instance.id = null
heartbeat.interval.ms = 3000
interceptor.classes = []
internal.leave.group.on.close = true
isolation.level = read_uncommitted
key.deserializer = class org.apache.kafka.common.serialization.StringDeserializer
max.partition.fetch.bytes = 1048576
max.poll.interval.ms = 300000
max.poll.records = 500
metadata.max.age.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
partition.assignment.strategy = [class org.apache.kafka.clients.consumer.RangeAssignor]
receive.buffer.bytes = 65536
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
request.timeout.ms = 30000
retry.backoff.ms = 100
sasl.client.callback.handler.class = null
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.mechanism = GSSAPI
security.protocol = PLAINTEXT
send.buffer.bytes = 131072
session.timeout.ms = 10000
ssl.cipher.suites = null
ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
ssl.endpoint.identification.algorithm = https
ssl.key.password = null
ssl.keymanager.algorithm = SunX509
ssl.keystore.location = null
ssl.keystore.password = null
ssl.keystore.type = JKS
ssl.protocol = TLS
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.location = null
ssl.truststore.password = null
ssl.truststore.type = JKS
value.deserializer = class org.apache.kafka.common.serialization.StringDeserializer
2023-08-16 19:16:50,884 INFO [17324] [main] [] o.a.k.c.u.AppInfoParser [AppInfoParser.java : 117] Kafka version: 2.3.1
2023-08-16 19:16:50,884 INFO [17324] [main] [] o.a.k.c.u.AppInfoParser [AppInfoParser.java : 118] Kafka commitId: 18a913733fb71c01
2023-08-16 19:16:50,884 INFO [17324] [main] [] o.a.k.c.u.AppInfoParser [AppInfoParser.java : 119] Kafka startTimeMs: 1692184610882
2023-08-16 19:16:50,887 INFO [17324] [main] [] o.a.k.c.c.KafkaConsumer [KafkaConsumer.java : 964] [Consumer clientId=consumer-1, groupId=mygroup] Subscribed to topic(s): my816topic
2023-08-16 19:16:51,094 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.Metadata [Metadata.java : 261] [Consumer clientId=consumer-1, groupId=mygroup] Cluster ID: mUe0Z0StRd2_X-_m_S557A
2023-08-16 19:16:51,096 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.AbstractCoordinator [AbstractCoordinator.java : 728] [Consumer clientId=consumer-1, groupId=mygroup] Discovered group coordinator 10.1.5.212:9092 (id: 2147483647 rack: null)
2023-08-16 19:16:51,099 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.ConsumerCoordinator [ConsumerCoordinator.java : 476] [Consumer clientId=consumer-1, groupId=mygroup] Revoking previously assigned partitions []
2023-08-16 19:16:51,099 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.s.k.l.KafkaMessageListenerContainer [LogAccessor.java : 292] mygroup: partitions revoked: []
2023-08-16 19:16:51,100 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.AbstractCoordinator [AbstractCoordinator.java : 505] [Consumer clientId=consumer-1, groupId=mygroup] (Re-)joining group
2023-08-16 19:16:51,114 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.AbstractCoordinator [AbstractCoordinator.java : 505] [Consumer clientId=consumer-1, groupId=mygroup] (Re-)joining group
2023-08-16 19:16:51,126 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.AbstractCoordinator [AbstractCoordinator.java : 469] [Consumer clientId=consumer-1, groupId=mygroup] Successfully joined group with generation 9
2023-08-16 19:16:51,130 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.ConsumerCoordinator [ConsumerCoordinator.java : 283] [Consumer clientId=consumer-1, groupId=mygroup] Setting newly assigned partitions: my816topic-0
2023-08-16 19:16:51,141 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.a.k.c.c.i.ConsumerCoordinator [ConsumerCoordinator.java : 525] [Consumer clientId=consumer-1, groupId=mygroup] Setting offset for partition my816topic-0 to the committed offset FetchPosition{offset=288, offsetEpoch=Optional.empty, currentLeader=LeaderAndEpoch{leader=10.1.5.212:9092 (id: 0 rack: null), epoch=0}}
2023-08-16 19:16:51,152 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] o.s.k.l.KafkaMessageListenerContainer [LogAccessor.java : 292] mygroup: partitions assigned: [my816topic-0]
2023-08-16 19:16:52,049 INFO [17324] [scheduling-1] [] c.t.k.KafkaProducerService [KafkaProducerService.java : 19] 向kafka发送消息:{"city":"hefei1692184612007","longitude":117.17,"latitude":31.52}
2023-08-16 19:16:52,053 INFO [17324] [scheduling-1] [] o.a.k.c.p.ProducerConfig [AbstractConfig.java : 347] ProducerConfig values:
acks = 1
batch.size = 16384
bootstrap.servers = [10.1.5.212:9092]
buffer.memory = 33554432
client.dns.lookup = default
client.id =
compression.type = none
connections.max.idle.ms = 540000
delivery.timeout.ms = 120000
enable.idempotence = false
interceptor.classes = []
key.serializer = class org.apache.kafka.common.serialization.StringSerializer
linger.ms = 0
max.block.ms = 60000
max.in.flight.requests.per.connection = 5
max.request.size = 1048576
metadata.max.age.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
partitioner.class = class org.apache.kafka.clients.producer.internals.DefaultPartitioner
receive.buffer.bytes = 32768
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
request.timeout.ms = 30000
retries = 2147483647
retry.backoff.ms = 100
sasl.client.callback.handler.class = null
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.mechanism = GSSAPI
security.protocol = PLAINTEXT
send.buffer.bytes = 131072
ssl.cipher.suites = null
ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
ssl.endpoint.identification.algorithm = https
ssl.key.password = null
ssl.keymanager.algorithm = SunX509
ssl.keystore.location = null
ssl.keystore.password = null
ssl.keystore.type = JKS
ssl.protocol = TLS
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.location = null
ssl.truststore.password = null
ssl.truststore.type = JKS
transaction.timeout.ms = 60000
transactional.id = null
value.serializer = class org.apache.kafka.common.serialization.StringSerializer
2023-08-16 19:16:52,072 INFO [17324] [scheduling-1] [] o.a.k.c.u.AppInfoParser [AppInfoParser.java : 117] Kafka version: 2.3.1
2023-08-16 19:16:52,072 INFO [17324] [scheduling-1] [] o.a.k.c.u.AppInfoParser [AppInfoParser.java : 118] Kafka commitId: 18a913733fb71c01
2023-08-16 19:16:52,072 INFO [17324] [scheduling-1] [] o.a.k.c.u.AppInfoParser [AppInfoParser.java : 119] Kafka startTimeMs: 1692184612071
2023-08-16 19:16:52,079 INFO [17324] [kafka-producer-network-thread | producer-1] [] o.a.k.c.Metadata [Metadata.java : 261] [Producer clientId=producer-1] Cluster ID: mUe0Z0StRd2_X-_m_S557A
2023-08-16 19:16:52,115 INFO [17324] [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] [] c.t.k.KafkaConsumerService [KafkaConsumerService.java : 14] rec msg:{"city":"hefei1692184612007","longitude":117.17,"latitude":31.52}