springBoot集成Kafka

1.  环境搭建

（1）搭建工程kafka-spring-boot-demo 添加pom依赖，最终的依赖信息

        <!-- 继承Spring boot工程 -->
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.2.8.RELEASE</version>
        </parent>
        <properties>
            <fastjson.version>1.2.58</fastjson.version>
        </properties>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <!-- kafkfa -->
            <dependency>
                <groupId>org.springframework.kafka</groupId>