Spring websocket发送给特定的人

Question

我为spring-web app添加了基于自定义令牌的身份验证，并为spring websocket扩展了相同的身份验证，如下所示

public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {

    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/topic", "/queue");
        config.setApplicationDestinationPrefixes("/app");
        config.setUserDestinationPrefix("/user");
    }

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/gs-guide-websocket").setAllowedOrigins("*").withSockJS();
    }

    @Override
      public void configureClientInboundChannel(ChannelRegistration registration) {
        registration.setInterceptors(new ChannelInterceptorAdapter() {

            @Override
            public Message<?> preSend(Message<?> message, MessageChannel channel) {

                StompHeaderAccessor accessor =
                    MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor.class);

                if (StompCommand.CONNECT.equals(accessor.getCommand())) {
                    String jwtToken = accessor.getFirstNativeHeader("Auth-Token");
                        if (!StringUtils.isEmpty(jwtToken)) {
                            Authentication auth = tokenService.retrieveUserAuthToken(jwtToken);
                            SecurityContextHolder.getContext().setAuthentication(auth);
                            accessor.setUser(auth);
                            //for Auth-Token '12345token' the user name is 'user1' as auth.getName() returns 'user1'
                        }
                }

                return message;
            }
        });
      }
}

连接到套接字的客户端代码是

var socket = new SockJS('http://localhost:8080/gs-guide-websocket');
    stompClient = Stomp.over(socket);
    stompClient.connect({'Auth-Token': '12345token'}, function (frame) {
        stompClient.subscribe('/user/queue/greetings', function (greeting) {
            alert(greeting.body);
        });
    });

从我的控制器我发送消息为

messagingTemplate.convertAndSendToUser("user1", "/queue/greetings", "Hi User1");

对于auth令牌12345token ，用户名是user1 。 但是当我向user1发送消息时，它没有在客户端收到。 这有什么我想念的吗？

Answer 1

在您的Websocket控制器中，您应该执行以下操作：

@Controller
public class GreetingController {

    @Autowired
    private SimpMessagingTemplate messagingTemplate;

    @MessageMapping("/hello")
    public void greeting(Principal principal, HelloMessage message) throws  Exception {
        Greeting greeting = new Greeting();
        greeting.setContent("Hello!");
        messagingTemplate.convertAndSendToUser(message.getToUser(), "/queue/reply", greeting);
    }
}

在客户端，您的用户应订阅topic / user / queue / reply。

您还必须添加一些目标前缀：

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {

    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/topic", "/queue" ,"/user");
        config.setApplicationDestinationPrefixes("/app");
        config.setUserDestinationPrefix("/user");
    }
/*...*/
}

当您的服务器在/ app / hello队列上收到消息时，它应该在您的dto中向用户发送消息。 用户必须等于用户的主体。

我认为代码中唯一的问题是您的“/ user”不在您的目标前缀中。 您的问候语消息被阻止，因为您将它们发送到以/ user开头的队列中，并且未注册此前缀。

您可以在git repo上查看来源： https ： //github.com/simvetanylen/test-spring-websocket

希望它有效！

Answer 2

在我之前的项目中，我向一个特定用户发送了消息; 详细我写了以下内容：

客户端 ：

function stompConnect(notificationTmpl) 
{
    var socket = new SockJS('/comm-svr');
    stompClient = Stomp.over(socket);
    var theUserId 
    stompClient.connect({userId:theUserId}, function (frame) {
            debug('Connected: ' + frame);
            stompClient.subscribe('/topic/connect/'+theUserId, function (data)                   {
//Handle data
              } 
        });
}

服务器端

Spring websocket听众：

@Component
public class WebSocketSessionListener
{
    private static final Logger logger = LoggerFactory.getLogger(WebSocketSessionListener.class.getName());
    private List<String> connectedClientId = new ArrayList<String>();

    @EventListener
    public void connectionEstablished(SessionConnectedEvent sce)
    {
        MessageHeaders msgHeaders = sce.getMessage().getHeaders();
        Principal princ = (Principal) msgHeaders.get("simpUser");
        StompHeaderAccessor sha = StompHeaderAccessor.wrap(sce.getMessage());
        List<String> nativeHeaders = sha.getNativeHeader("userId");
        if( nativeHeaders != null )
        {
            String userId = nativeHeaders.get(0);
            connectedClientId.add(userId);
            if( logger.isDebugEnabled() )
            {
                logger.debug("Connessione websocket stabilita. ID Utente "+userId);
            }
        }
        else
        {
            String userId = princ.getName();
            connectedClientId.add(userId);
            if( logger.isDebugEnabled() )
            {
                logger.debug("Connessione websocket stabilita. ID Utente "+userId);
            }
        }
    }

    @EventListener
    public void webSockectDisconnect(SessionDisconnectEvent sde)
    {
        MessageHeaders msgHeaders = sde.getMessage().getHeaders();
        Principal princ = (Principal) msgHeaders.get("simpUser");
        StompHeaderAccessor sha = StompHeaderAccessor.wrap(sde.getMessage());
        List<String> nativeHeaders = sha.getNativeHeader("userId");
        if( nativeHeaders != null )
        {
            String userId = nativeHeaders.get(0);
            connectedClientId.remove(userId);
            if( logger.isDebugEnabled() )
            {
                logger.debug("Connessione websocket stabilita. ID Utente "+userId);
            }
        }
        else
        {
            String userId = princ.getName();
            connectedClientId.remove(userId);
            if( logger.isDebugEnabled() )
            {
                logger.debug("Connessione websocket stabilita. ID Utente "+userId);
            }
        }
    }

    public List<String> getConnectedClientId()
    {
        return connectedClientId;
    }
    public void setConnectedClientId(List<String> connectedClientId)
    {
        this.connectedClientId = connectedClientId;
    }
}

Spring websocket消息发送者：

@Autowired
    private SimpMessagingTemplate msgTmp;
    private void propagateDvcMsg( WebDeviceStatusInfo device )
    {
        String msg = "";
        String userId =((Principal)SecurityContextHolder.getContext().getAuthentication().getPrincipal()).getName()
        msgTmp.convertAndSend("/topic/connect"+userId, msg);
    }

我希望它有用