基于普通java和基于spring boot的 Java kafka producer and client demo

基于普通java和基于spring boot的kafka producer and client demo (kafka client v0.8.2以后)的总结如下：

1) 基于普通java的kafka producer and client demo (kafka client v0.8.2以后)

•    1.1 例子说明: https://blog.youkuaiyun.com/u012501054/article/details/80241921
•    1.2 代码例子： https://github.com/downgoon/hello-world/wiki/kafka-0.9-java-producer-and-consumer-demo

2) 基于spring-boot的kafka producer and client demo (kafka client v0.8.2以后)

•   2.1【在 Spring Boot 中开发 Kafka consumer 和 producer】https://blog.youkuaiyun.com/bigtree_3721/article/details/84551129
•   2.2【Spring Boot 中使用@KafkaListener并发批量接收消息】https://blog.youkuaiyun.com/russle/article/details/81258590