spring boot 与kafka集成的示例代码

<?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>

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

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());
  }
}

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));
  }
}

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";
  }
}