Spring Boot整合Kafka

Kafka单机安装：https://www.jianshu.com/p/d047cf607279

1、maven依赖

      <dependency>
         <groupId>org.springframework.kafka</groupId>
          <artifactId>spring-kafka</artifactId>
          <version>2.2.2.RELEASE</version>
      </dependency>

2、配置文件

spring.kafka.bootstrap-servers=xxx.xx.xx.xx:9092
#设置一个默认组
spring:
  kafka:
    producer:
      batch-size: 65536
      buffer-memory: 524288
      value-serializer: org.apache.kafka.common.serialization.StringSerializer
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
    bootstrap-servers: 119.29.192.127:9092
    consumer:
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      group-id: 0
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer

3、生产者

package com.hsshy.beam.kafka.service;

import com.alibaba.fastjson.JSON;
import com.hsshy.beam.sys.entity.SysConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

@Component
public class KafkaSender {

    @Autowired
    private KafkaTemplate<String,Object> kafkaTemplate;





    /**
     * 发送消息到kafka
     */
    public void sendChannelMess(String channel, String message){
        kafkaTemplate.send(channel,message);
    }

    public void sendChannelMap(String channel, SysConfig message){
        kafkaTemplate.send(channel, JSON.toJSONString(message));
    }
}

4、消费者

package com.hsshy.beam.kafka.service;

import com.alibaba.fastjson.JSON;
import com.hsshy.beam.common.utils.RedisUtil;
import com.hsshy.beam.sys.entity.SysConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;


@Component
public class KafkaConsumer {


    @Autowired
    private RedisUtil redisUtil;
    /**
     * 监听testTopic主题,有消息就读取
     * @param message
     */
    @KafkaListener(topics = {"testTopic"})
    public void receiveMessage(String message){
        //收到通道的消息之后执行操作
        System.out.println("消息1："+message);
    

    }

    /**
     * 监听test2主题,有消息就读取
     * @param message
     */
    @KafkaListener(topics = {"test2"})
    public void receiveMap(String message){

        //收到通道的消息之后执行操作
        System.out.println("消息2："+message);
        SysConfig sysConfig = JSON.parseObject(message,SysConfig.class);
        System.out.println(sysConfig.getParamKey());


    }
}

5、Controller

package com.hsshy.beam.kafka.controller;
import com.hsshy.beam.common.utils.R;
import com.hsshy.beam.kafka.service.KafkaSender;
import com.hsshy.beam.sys.entity.SysConfig;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

/**
 * @description: kafka演示
 * @author: hs
 * @create: 2019-04-03 10:13:12
 **/
@RequestMapping(value = "/kafka")
@RestController
@Api(value = "KafkaController",tags = "KafkaController")
public class KafkaController {

    @Autowired
    private KafkaSender kafkaSender;

    @ApiOperation(value = "测试")
    @GetMapping(value = "/test")
    public R test(){

        kafkaSender.sendChannelMess("testTopic","caonima");

        SysConfig sysConfig = new SysConfig();
        sysConfig.setParamKey("11111");

        kafkaSender.sendChannelMap("test2",sysConfig);
        return R.ok();

    }


}

源码地址： https://gitee.com/hsshy/beam-example