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>
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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
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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());
}
}
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启动spring-boot程序,在kafka集群,模拟发送topic,检验接收
复制代码 代码如下:
bin/kafka-console-producer.sh --broker-list vm208:9092,vm210:9092,vm50:9092 --topic test
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));
}
}
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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";
}
}
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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