新建spring boot项目
这里使用intellij idea
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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> <groupid>com.example</groupid> <artifactid>demo</artifactid> <version> 0.0 . 1 -snapshot</version> <packaging>jar</packaging> <name>demo</name> <description>demo project for spring boot</description> <parent> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-parent</artifactid> <version> 1.5 . 8 .release</version> <relativepath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceencoding>utf- 8 </project.build.sourceencoding> <project.reporting.outputencoding>utf- 8 </project.reporting.outputencoding> <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.springframework.boot</groupid> <artifactid>spring-boot-starter-test</artifactid> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-maven-plugin</artifactid> </plugin> </plugins> </build> </project> |
项目中application.properties 添加
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spring.kafka.bootstrap-servers=vm208: 9092 ,vm: 9092 ,vm50: 9092 spring.kafka.consumer.auto-offset-reset=latest spring.kafka.consumer.group-id=local_test 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.acks= 1 |
新建kafkaconsumer消费类
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package com.example.demo.consumer; import org.apache.kafka.clients.consumer.consumerrecord; import org.slf4j.logger; import org.slf4j.loggerfactory; import org.springframework.kafka.annotation.kafkalistener; import org.springframework.stereotype.component; @component public class kafkaconsumer { private logger logger = loggerfactory.getlogger( this .getclass()); @kafkalistener (topics = { "test" }) public void listen(consumerrecord<?, ?> record) { system.out.printf( "offset = %d,key =%s,value=%s\n" , record.offset(), record.key(), record.value()); } } |
启动spring-boot程序,在kafka集群,模拟发送topic,检验接收
编写producer代码
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package com.example.demo.producer; import org.apache.kafka.clients.producer.producerrecord; import org.springframework.beans.factory.annotation.autowired; import org.springframework.kafka.core.kafkatemplate; import org.springframework.stereotype.component; @component public class kafkaproducer { @autowired private kafkatemplate kafkatemplate; string topic= "test" ; public void sendmessage(string key,string data){ kafkatemplate.send( new producerrecord(topic,key,data)); } } |
建立一个restful模拟发送( //http://localhost:8080/kafka/send.do?key=2&data=allen-test-message)
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package com.example.demo.controller; import com.example.demo.producer.kafkaproducer; import org.springframework.beans.factory.annotation.autowired; import org.springframework.web.bind.annotation.requestmapping; import org.springframework.web.bind.annotation.requestmethod; import org.springframework.web.bind.annotation.requestparam; import org.springframework.web.bind.annotation.restcontroller; @restcontroller public class producercontroller { @autowired private kafkaproducer kafkaproducer; @requestmapping (value = "/kafka/send.do" , method = requestmethod.get) public string sendmessage( @requestparam (value = "key" ) string key, @requestparam (value = "data" ) string data) { kafkaproducer.sendmessage(key, data); return "sucess" ; } } |
可以发现 spring-kafka大大减少了代码工作量.
官方文档: https://docs.spring.io/spring-kafka/docs/1.2.2.release/reference/html/
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/baifanwudi/article/details/78282620?fps=1&locationNum=10