以下是一个使用Spring Boot整合WebSocket的简单示例，实现全双工通讯：
- 添加依赖到
pom.xml：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
- 配置WebSocket：
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/ws").withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableSimpleBroker("/topic");
registry.setApplicationDestinationPrefixes("/app");
}
}
- 创建控制器处理WebSocket请求：
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.handler.annotation.SendTo;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class WebSocketController {
@Autowired
private SimpMessagingTemplate simpMessagingTemplate;
@MessageMapping("/chat.sendMessage")
@SendTo("/topic/public")
public ChatMessage sendMessage(ChatMessage message) {
return message;
}
@MessageMapping("/chat.addUser")
@SendTo("/topic/public")
public ChatMessage addUser(Principal principal, ChatMessage message) {
message.setUsername(principal.getName());
return message;
}
}
class ChatMessage {
private String username;
private String message;
// getters and setters
}
- 前端JavaScript代码连接WebSocket并发送接收消息：
var socket = new SockJS('/ws');
stompClient = Stomp.over(socket);
stompClient.connect({}, function(frame) {
console.log('Connected: ' + frame);
stompClient.subscribe('/topic/public', function(message) {
// Handle incoming messages
showMe