https://blog.csdn.net/moshowgame/article/details/80275084
https://bbs.csdn.net/topics/392417235
1、maven依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
2、springboot2中AbstractWebSocketMessageBrokerConfigurer过时
将 extends AbstractWebSocketMessageBrokerConfigurer 改为
implements WebSocketMessageBrokerConfigurer
其余与 SpringBoot1 相同。