创建java工程操作kafka

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.fch</groupId>
	<artifactId>mykafka</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>mykafka</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>1.8</java.version>
	</properties>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.4.5</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<dependencies>
		<!--SpringBoot通用依赖模块-->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<!--Spring整合Kafka-->
		<dependency>
			<groupId>org.springframework.kafka</groupId>
			<artifactId>spring-kafka</artifactId>
			<version>2.7.1</version>
		</dependency>
		<!--Swagger-UI API文档生产工具-->
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger2</artifactId>
			<version>2.7.0</version>
		</dependency>
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger-ui</artifactId>
			<version>2.7.0</version>
		</dependency>
		<!--lombok依赖-->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<!--Hutool Java工具包-->
		<dependency>
			<groupId>cn.hutool</groupId>
			<artifactId>hutool-all</artifactId>
			<version>4.5.7</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

server:
  port: 8088
spring:
  kafka:
    bootstrap-servers: 'xxxx:9092'
    consumer:
      group-id: "bootGroup"

package com.fch.mykafka.controller;


import com.fch.mykafka.config.KafkaProducer;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
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.ResponseBody;

/**
 * Kafka功能测试
 * Created by macro on 2021/5/19.
 */
@Api(tags = "KafkaController", description = "Kafka功能测试")
@Controller
@RequestMapping("/kafka")
public class KafkaController {

    @Autowired
    private KafkaProducer kafkaProducer;

    @ApiOperation("发送消息")
    @RequestMapping(value = "/sendMessage", method = RequestMethod.GET)
    @ResponseBody
    public String sendMessage(@RequestParam String message) {
        kafkaProducer.send(message);
        return "ok";
    }
}

package com.fch.mykafka.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

/**
 * Kafka消息消费者
 * Created by macro on 2021/5/19.
 */
@Slf4j
@Component
public class KafkaConsumer {

    @KafkaListener(topics = "bootTopic")
    public void processMessage(String content) {
        log.info("consumer processMessage : {}",content);
    }

}

package com.fch.mykafka.config;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

/**
 * Kafka消息生产者
 * Created by macro on 2021/5/19.
 */
@Component
@Api("KafkaProducer,kafka生产者")
public class KafkaProducer {
    @Autowired
    private KafkaTemplate kafkaTemplate;
    @ApiOperation(value = "/messger",notes = "发送方法",produces = "application/json")
    public void send(String message){
        kafkaTemplate.send("bootTopic",message);
    }
}

package com.fch.mykafka.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * Swagger2API文档的配置
 */
@Configuration
@EnableSwagger2
public class Swagger2Config {
    @Bean
    public Docket createRestApi(){
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                //为当前包下controller生成API文档
                .apis(RequestHandlerSelectors.basePackage("com.fch.mykafka.controller"))
                //为有@Api注解的Controller生成API文档
//                .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))
                //为有@ApiOperation注解的方法生成API文档
//                .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("SwaggerUI演示111")
                .termsOfServiceUrl("xxxxx:8088")
                .description("mall-tiny")
                .contact("macro")
                .version("1.0")
                .build();
    }
}