java – Spring websocket发送给特定的人

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？

解决方法

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,它应该向您的dto中的用户发送消息.用户必须等于用户的主体.

我认为您的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.

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

希望它有效！