在 WebSocketHandler (Spring-websocket) 中访问 HTTP Session

Question

亲爱的，我正在尝试在我的 WebSocketHandler 中获取 HTTPSession。我在使用 'javax.websocket-api' 时可以成功，但我现在使用 'Spring-Websocket'.

配置：

@ConditionalOnWebApplication
@Configuration
@EnableWebSocket
public class WebSocketConfigurator implements WebSocketConfigurer {

    @Autowired
    private ApplicationContext context;

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        MyEndpoint endpoint = context.getBean(MyEndpoint.class);
        registry.addHandler(endpoint, "/signaling");
    }
}

建立连接时：

    @Component
    public class MyEndpoint implements WebSocketHandler {

        private WebSocketSession wsSession;

        @Override
        public void afterConnectionEstablished(WebSocketSession webSocketSession) throws Exception {
            this.wsSession = webSocketSession;
            // need to get the HTTP SESSION HERE        
            log.info("Opening: " + webSocketSession.getId());
        }
    }

现在这是我如何使用 'javax.websocket-api' 完成的示例：

配置：

@ServerEndpoint(value = "/signaling", //
        decoders = MessageDecoder.class, //
        encoders = MessageEncoder.class,
        configurator = MyEndpointConfigurator.class)
/***
 * define signaling endpoint         
 */
public class MyEndpoint extends NextRTCEndpoint {

}

然后我注入了修改握手的 HTTPSession :

public class MyEndpointConfigurator extends ServerEndpointConfig.Configurator {
    @Override
    public void modifyHandshake(ServerEndpointConfig config,
            HandshakeRequest request,
            HandshakeResponse response) {
        HttpSession httpSession = (HttpSession) request.getHttpSession();
        config.getUserProperties().put(HttpSession.class.getName(), httpSession);
    }
}

最后，在建立 WS 连接时可以访问：

    @OnOpen
    public void onOpen(Session session, EndpointConfig config) {
        this.wsSession = session;
        this.httpSession = (HttpSession) config.getUserProperties().get(HttpSession.class.getName());
        log.info("Opening: " + session.getId());

        server.register(session, httpSession);
    }

我无法成功地使用 'Spring Websocket' 做类似的事情。任何解决方案？请不要从 StompJS 推荐类，因为我没有使用它。

Answer 1

有这个可以用：

**
 * An interceptor to copy information from the HTTP session to the "handshake
 * attributes" map to made available via{@link WebSocketSession#getAttributes()}.
 *
 * <p>Copies a subset or all HTTP session attributes and/or the HTTP session id
 * under the key {@link #HTTP_SESSION_ID_ATTR_NAME}.
 *
 * @author Rossen Stoyanchev
 * @since 4.0
 */
public class HttpSessionHandshakeInterceptor implements HandshakeInterceptor {

并且Reference Manual中有一个示例如何配置它：

@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
    registry.addHandler(new MyHandler(), "/myHandler")
        .addInterceptors(new HttpSessionHandshakeInterceptor());
}

因此，无论您从 HTTP 会话中需要什么，都将在 WebSocketSession.getAttributes() 中可用。

在 WebSocketHandler (Spring-websocket) 中访问 HTTP Session

Access HTTP Session in WebSocketHandler (Spring-websocket)

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spring-websocket