第一、普通websocket直接集成即可
<!-- Spring Websocket 相关依赖 -->
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
第二、web后端两点，创建配置，发布端点服务
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;@Configuration
public class WebSocketConfig {@Beanpublic ServerEndpointExporter serverEndpointExporter() {return new ServerEndpointExporter();}
}
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Component;import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.ConcurrentHashMap;@Component
@Slf4j
@ServerEndpoint("/websocket/message/{userId}")
public class WebSocketServer {/*** 静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。*/private static int onlineCount = 0;/*** concurrent包的线程安全Set，用来存放每个客户端对应的WebSocket对象。*/private static final ConcurrentHashMap<String, We
)
