文章目录
1、生产者监听器 1.1、创建生产者监听器 1.2、创建生产者拦截器 1.3、发送消息测试 1.4、使用Java代码创建主题分区副本 1.5、application.yml配置----v1版 1.6、屏蔽 kafka debug 日志 logback.xml 1.7、引入spring-kafka依赖 1.8、控制台日志
1、生产者监听器
1.1、创建生产者监听器
package com. atguigu. kafka. listener ;
import org. apache. kafka. clients. producer. ProducerRecord ;
import org. apache. kafka. clients. producer. RecordMetadata ;
import org. springframework. kafka. support. ProducerListener ;
@Component
public class MyKafkaProducerListener implements ProducerListener < String , String > {
@Override
public void onSuccess ( ProducerRecord < String , String > producerRecord, RecordMetadata recordMetadata) {
System . out. println ( "MyKafkaProducerListener消息发送成功:" + "topic=" + producerRecord. topic ( )
+ ",partition = " + producerRecord. partition ( )
+ ",key = " + producerRecord. key ( )
+ ",value = " + producerRecord. value ( )
+ ",offset = " + recordMetadata. offset ( ) ) ;
}
@Override
public void onError ( ProducerRecord < String , String > producerRecord, RecordMetadata recordMetadata, Exception exception) {
System . out. println ( "MyKafkaProducerListener消息发送失败:" + "topic=" + producerRecord. topic ( )
+ ",partition = " + producerRecord. partition ( )
+ ",key = " + producerRecord. key ( )
+ ",value = " + producerRecord. value ( )
+ ",offset = " + recordMetadata. offset ( ) ) ;
System . out. println ( "异常信息:" + exception. getMessage ( ) ) ;
}
}
1.2、创建生产者拦截器
package com. atguigu. kafka. interceptor ;
import org. apache. kafka. clients. producer. ProducerInterceptor ;
import org. apache. kafka. clients. producer. ProducerRecord ;
import org. apache. kafka. clients. producer. RecordMetadata ;
import org. springframework. stereotype. Component ;
import java. util. Map ;
@Component
public class MyKafkaInterceptor implements ProducerInterceptor < String , String > {
@Override
public ProducerRecord < String , String > onSend ( ProducerRecord < String , String > producerRecord) {
System . out. println ( "生产者即将发送消息:topic = " + producerRecord. topic ( )
+ ",partition:" + producerRecord. partition ( )
+ ",key = " + producerRecord. key ( )
+ ",value = " + producerRecord. value ( ) ) ;
return null ;
}
@Override
public void onAcknowledgement ( RecordMetadata recordMetadata, Exception e) {
if ( e == null ) {
System . out. println ( "消息发送成功:topic = " + recordMetadata. topic ( )
+ ",partition:" + recordMetadata. partition ( )
+ ",offset=" + recordMetadata. offset ( )
+ ",timestamp=" + recordMetadata. timestamp ( ) ) ;
}
}
@Override
public void close ( ) {
}
@Override
public void configure ( Map < String , ? > map) {
}
}
1.3、发送消息测试
package com. atguigu. kafka. producer ;
import com. atguigu. kafka. interceptor. MyKafkaInterceptor ;
import jakarta. annotation. PostConstruct ;
import jakarta. annotation. Resource ;
import org. junit. jupiter. api. Test ;
import org. springframework. boot. test. context. SpringBootTest ;
import org. springframework. kafka. core. KafkaTemplate ;
import java. io. IOException ;
@SpringBootTest
class KafkaProducerApplicationTests {
@Resource
KafkaTemplate kafkaTemplate;
@Resource
MyKafkaInterceptor myKafkaInterceptor;
@PostConstruct
public void init ( ) {
kafkaTemplate. setProducerInterceptor ( myKafkaInterceptor) ;
}
@Test
void contextLoads ( ) throws IOException {
kafkaTemplate. send ( "my_topic1" , "spring-kafka-生产者监听器" ) ;
System . in. read ( ) ;
}
}
1.4、使用Java代码创建主题分区副本
package com. atguigu. kafka. config ;
import org. apache. kafka. clients. admin. NewTopic ;
import org. springframework. context. annotation. Bean ;
import org. springframework. kafka. config. TopicBuilder ;
import org. springframework. stereotype. Component ;
@Component
public class KafkaTopicConfig {
@Bean
public NewTopic myTopic1 ( ) {
return TopicBuilder . name ( "my_topic1" )
. partitions ( 3 )
. replicas ( 3 )
. build ( ) ;
}
}
1.5、application.yml配置----v1版
server:
port: 8110
# v1
spring:
kafka:
bootstrap- servers: 192.168 .74 .148 : 9095 , 192.168 .74 .148 : 9096 , 192.168 .74 .148 : 9097
producer: # producer 生产者
retries: 0 # 重试次数 0 表示不重试
acks: - 1 # 应答级别: 多少个分区副本备份完成时向生产者发送ack确认( 可选0 、1 、- 1 / all)
batch- size: 16384 # 批次大小 单位byte
buffer- memory: 33554432 # 生产者缓冲区大小 单位byte
key- serializer: org. apache. kafka. common. serialization. StringSerializer # key的序列化器
value- serializer: org. apache. kafka. common. serialization. StringSerializer # value的序列化器
1.6、屏蔽 kafka debug 日志 logback.xml
< configuration>
< logger name = " org.apache.kafka.clients" level = " debug" />
</ configuration>
1.7、引入spring-kafka依赖
<?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 https://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> 3.0.5</ version>
< relativePath/>
</ parent>
< groupId> com.atguigu.kafka</ groupId>
< artifactId> kafka-producer</ artifactId>
< version> 0.0.1-SNAPSHOT</ version>
< name> kafka-producer</ name>
< description> kafka-producer</ description>
< properties>
< java.version> 17</ java.version>
</ properties>
< dependencies>
< dependency>
< groupId> org.springframework.boot</ groupId>
< artifactId> spring-boot-starter</ artifactId>
</ 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</ artifactId>
</ dependency>
</ dependencies>
< build>
< plugins>
< plugin>
< groupId> org.springframework.boot</ groupId>
< artifactId> spring-boot-maven-plugin</ artifactId>
</ plugin>
</ plugins>
</ build>
</ project>
1.8、控制台日志
生产者即将发送消息:topic = my_topic1,partition: null ,key = null ,value = spring- kafka- 生产者监听器
消息发送成功:topic = my_topic1,partition: 0 ,offset= 0 ,timestamp= 1717573749549
MyKafkaProducerListener消息发送成功:topic= my_topic1,partition = null ,key = null ,value = spring- kafka- 生产者监听器,offset = 0
[
[
{
"partition" : 0 ,
"offset" : 0 ,
"msg" : "spring-kafka-生产者监听器" ,
"timespan" : 1717573749549 ,
"date" : "2024-06-05 07:49:09"
}
]
]