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Java Spring boot websocket与JS的通信

stomp websocket spring-boot spring java

TheUnreal · 技术社区 · 7 年前

我的Spring boot应用程序中有以下WebSocketConfig:

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/ws").setAllowedOrigins("*").withSockJS();
    }

    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) {
        registry.setApplicationDestinationPrefixes("/app");
        registry.enableSimpleBroker("/topic");
    }
}

我的控制器中的代码:

@Autowired
    private SimpMessagingTemplate template;

    @Scheduled(fixedRate = 5000)
    public void getMessage() {
        System.out.println("scheduled");
        this.template.convertAndSend("/topic/updateService", "Hello");
    }

我试图用我的javascript应用程序以这种方式读取这些消息:

let socket = new SockJS(`https://localhost:8443/ws`);
    let stompClient = Stomp.over(socket);

    stompClient.connect({}, () => {
      stompClient.subscribe('/topic/updateService', (data) => {
        console.log("New message!");
        console.log(data);
      });
    }, () => {
      console.log('failed');
    });

虽然我订阅了/updateService,但我没有收到任何消息。

控制台日志显示一切正常:

虽然在我的Spring boot应用程序中我看到了 scheduled 在我的控制台中,我的客户端没有收到任何消息。

你知道哪里出了问题吗?

2 回复 | 直到 7 年前

Dmitry Zlykh 7 年前

您可以启用登录 application.properties 了解WS-connection的实际情况。

logging.level.org.springframework.messaging=trace
logging.level.org.springframework.web.socket=trace

connected to server undefined
我试着复制你的问题,对我来说效果很好。你有额外的路由或安全配置吗(我注意到http s 和自定义端口)?以下是您需要检查的代码:

@Controller
public class SomeController {

    @Autowired
    private SimpMessagingTemplate simpMessagingTemplate;

    @Scheduled(fixedDelay = 1000)
    private void send() {
        simpMessagingTemplate.convertAndSend("/topic/updateService", "Hello");
    }
}

主应用程序(&M);Websocket配置(不要忘记 @EnableWebSocketMessageBroker ):

@SpringBootApplication
@EnableScheduling
@EnableWebSocketMessageBroker
public class Main extends AbstractWebSocketMessageBrokerConfigurer {
    public static void main(String[] args) {
        SpringApplication.run(Main.class, args);
    }

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/ws").setAllowedOrigins("*").withSockJS();
    }

    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) {
        registry.setApplicationDestinationPrefixes("/app");
        registry.enableSimpleBroker("/topic");
    }
}

这是JS代码:

<script type="text/javascript">
        var stompClient = null;

        function connect() {
            var socket = new SockJS("http://localhost:8443/ws");
            stompClient = Stomp.over(socket);
            stompClient.connect({}, function () {
                stompClient.subscribe('/topic/updateService', function (data) {
                    console.log(data);
                });
            });
        }

        function disconnect() {
            if (stompClient != null) {
                stompClient.disconnect();
            }
            console.log("Disconnected");
        }

</script>

FirePapaya 5 年前

我知道这个问题很老,但也许我的回答会帮助别人。

<script>    
import SockJS from 'sockjs-client'
const Stomp = require('stompjs')
const socket = new SockJS('http://localhost:8088/monitor/activity',{transports: ['websocket'] })

// Usual Vue-js stuff
methods: {
  subscribe (frame) {
    console.log('Subscribed to: ' + frame)
    this.stompClient.subscribe('/web-socket/activity', (payload) => {
      console.log('Successfully handled message :' + payload)
    })
  },
  connect () {
    this.stompClient = Stomp.over(socket)
    this.stompClient.connect({}, this.subscribe)
  }
},
mounted() {
  this.connect
}
</script>

在服务器端(用Kotlin编写的Spring应用程序),我添加了配置类

@Configuration
class WebSocketConfig : WebSocketMessageBrokerConfigurer {

    override fun registerStompEndpoints(registry: StompEndpointRegistry) {

        registry.addEndpoint("/monitor/activity")
                .setAllowedOrigins("*")
                .withSockJS()
    }
}

如你所见,我不要推翻 configureMessageBroker 方法

在主类I中,启用web套接字和调度

@SpringBootApplication
@EnableScheduling
@EnableWebSocketMessageBroker
@EnableWebSocket
public class SpringBootVuejsApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootVuejsApplication.class, args);
    }
}

下面是向套接字发送消息的组件:

@Component
class LoanScheduledCron
@Autowired constructor(
        private val messagingTemplate: SimpMessagingTemplate
) {

    @Scheduled(fixedDelay = 5000)
    fun getSchedulersActivity () {
        messagingTemplate.convertAndSend("/web-socket/activity", "Still active")
    }
}

请注意,在调用方法时,我必须将完整目的地作为参数写入 convertAndSend .