添加依赖
xml
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<!-- WebSocket 支持 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
添加配置类
java
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@Configuration
public class WebSocketConfig {
@Bean
public ServerEndpointExporter serverEndpointExporter(){
return new ServerEndpointExporter();
}
}
添加服务类
java
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@Component
@ServerEndpoint("/ws/{clientId}")
public class WebSocketServer {
private static Map<String, Session> sessionMap = new HashMap<>();
@OnOpen
public void onOpen(Session session, @PathParam("clientId") String clientId) {
System.err.println("客户端：" + clientId + "建立连结");
sessionMap.put(clientId, session);
}
@OnClose
public void onClose(@PathParam("clientId") String clientId) {
sessionMap.remove(clientId);
}
/**
* 收到客户端消息后调用的方法
*
* @param message 客户端发送过来的消息
* @param clientId
*/
@OnMessage
public void onMessage(String message, @PathParam("clientId") String clientId) {
System.err.println("收到来自客户端" + clientId + "的消息：" + message);
}
public void sendMessage(String message) {
Collection<Session> sessions = sessionMap.values();
for (Session session : sessions) {
try {
session.getBasicRemote().sendText(message);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}