spring集成kafka

Easter79
• 阅读 741

1、引入依赖jar包

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

2、配置kafka信息

spring:
  kafka: 
    bootstrap-servers: localhost:9092
    consumer: 
      group-id: group1
    listener: 
      missing-topics-fatal: false

启动报错,需要配置missing-topics-fatal为false

org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'; nested exception is java.lang.IllegalStateException: Topic(s) [topic1] is/are not present and missingTopicsFatal is true
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:185)
    at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53)
    at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360)
    at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158)
    at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:894)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:162)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215)
    at com.zhoulp.SyncMessageWebApplication.main(SyncMessageWebApplication.java:24)
Caused by: java.lang.IllegalStateException: Topic(s) [topic1] is/are not present and missingTopicsFatal is true
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.checkTopics(AbstractMessageListenerContainer.java:383)
    at org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart(ConcurrentMessageListenerContainer.java:144)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfNecessary(KafkaListenerEndpointRegistry.java:312)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.start(KafkaListenerEndpointRegistry.java:257)
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
    ... 14 common frames omitted

3、实现生产者

package com.zhoulp.producer;

import javax.inject.Inject;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

/**
 * 
 * @author zhoulp
 * @date   2020-08-03
 *
 */
@Component("kafkaProducer")
public class KafkaProducer {
    
    private static Logger log = LoggerFactory.getLogger(KafkaProducer.class);
    
    @Inject
    private KafkaTemplate<String, String> template;
    
    public void sendMessage(String topic, String data) {
        log.info("send: topic = {}, data = {}", topic, data);
        template.send(topic, data);
    }

}

4、实现消费者

package com.zhoulp.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;

/**
 * 
 * @author zhoulp
 * @date   2020-08-03
 *
 */
@Component("kafkaConsumer")
public class KafkaConsumer {
    
    private static Logger log = LoggerFactory.getLogger(KafkaConsumer.class);
    
    @KafkaListener(topics = "topic1")
    public void listenTopic1(ConsumerRecord<String, String> consumerRecord) {
        log.info("listenTopic1");
        log.info(consumerRecord.toString());
        log.info(consumerRecord.topic());
        log.info(consumerRecord.value());
    }

}
点赞
收藏
评论区
推荐文章
blmius blmius
3年前
MySQL:[Err] 1292 - Incorrect datetime value: ‘0000-00-00 00:00:00‘ for column ‘CREATE_TIME‘ at row 1
文章目录问题用navicat导入数据时,报错:原因这是因为当前的MySQL不支持datetime为0的情况。解决修改sql\mode:sql\mode:SQLMode定义了MySQL应支持的SQL语法、数据校验等,这样可以更容易地在不同的环境中使用MySQL。全局s
Wesley13 Wesley13
3年前
java将前端的json数组字符串转换为列表
记录下在前端通过ajax提交了一个json数组的字符串,在后端如何转换为列表。前端数据转化与请求varcontracts{id:'1',name:'yanggb合同1'},{id:'2',name:'yanggb合同2'},{id:'3',name:'yang
皕杰报表之UUID
​在我们用皕杰报表工具设计填报报表时,如何在新增行里自动增加id呢?能新增整数排序id吗?目前可以在新增行里自动增加id,但只能用uuid函数增加UUID编码,不能新增整数排序id。uuid函数说明:获取一个UUID,可以在填报表中用来创建数据ID语法:uuid()或uuid(sep)参数说明:sep布尔值,生成的uuid中是否包含分隔符'',缺省为
待兔 待兔
4个月前
手写Java HashMap源码
HashMap的使用教程HashMap的使用教程HashMap的使用教程HashMap的使用教程HashMap的使用教程22
Jacquelyn38 Jacquelyn38
3年前
2020年前端实用代码段,为你的工作保驾护航
有空的时候,自己总结了几个代码段,在开发中也经常使用,谢谢。1、使用解构获取json数据let jsonData  id: 1,status: "OK",data: 'a', 'b';let  id, status, data: number   jsonData;console.log(id, status, number )
Stella981 Stella981
3年前
KVM调整cpu和内存
一.修改kvm虚拟机的配置1、virsheditcentos7找到“memory”和“vcpu”标签,将<namecentos7</name<uuid2220a6d1a36a4fbb8523e078b3dfe795</uuid
Wesley13 Wesley13
3年前
00:Java简单了解
浅谈Java之概述Java是SUN(StanfordUniversityNetwork),斯坦福大学网络公司)1995年推出的一门高级编程语言。Java是一种面向Internet的编程语言。随着Java技术在web方面的不断成熟,已经成为Web应用程序的首选开发语言。Java是简单易学,完全面向对象,安全可靠,与平台无关的编程语言。
Easter79 Easter79
3年前
Springboot2整合Kafka
依赖<dependency<groupIdorg.springframework.kafka</groupId<artifactIdspringkafka</artifactId</dependency配置spring:kafka:bootstrapservers:外网ip:9092
Wesley13 Wesley13
3年前
MySQL部分从库上面因为大量的临时表tmp_table造成慢查询
背景描述Time:20190124T00:08:14.70572408:00User@Host:@Id:Schema:sentrymetaLast_errno:0Killed:0Query_time:0.315758Lock_
Python进阶者 Python进阶者
10个月前
Excel中这日期老是出来00:00:00,怎么用Pandas把这个去除
大家好,我是皮皮。一、前言前几天在Python白银交流群【上海新年人】问了一个Pandas数据筛选的问题。问题如下:这日期老是出来00:00:00,怎么把这个去除。二、实现过程后来【论草莓如何成为冻干莓】给了一个思路和代码如下:pd.toexcel之前把这
Easter79
Easter79
Lv1
今生可爱与温柔,每一样都不能少。
文章
2.8k
粉丝
5
获赞
1.2k