一、创建项目并导入依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<!--https://mvnrepository.com/artifact/org.webjars/sockjs-client-->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>sockjs-client</artifactId>
<version>1.1.2</version>
</dependency>
<!--https://mvnrepository.com/artifact/org.webjars.bower/jquery-->
<dependency>
<groupId>org.webjars.bower</groupId>
<artifactId>jquery</artifactId>
<version>3.4.1</version>
</dependency>
<!--https://mvnrepository.com/artifact/org.webjars/stomp-websocket-->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>stomp-websocket</artifactId>
<version>2.3.3</version>
</dependency>
<!--https://mvnrepository.com/artifact/org.webjars/webjars-locator-core-->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>webjars-locator-core</artifactId>
<version>0.38</version>
</dependency>
注：我这里js文件用jar代替，其实和jar包效果用法一样
二、相关配置代码
2.1）创建一个WebSocketConfig配置文件并实现WebSocketMessagerBrokerConfigurer
2.2）在类上方加如下注解
2.3）重写方法
2.4）Message实体类
2.5）controller
下面两个写法一样
2.6）前端chat.html
