首页 > 解决方案 > 在 WebSocketHandler 中访问 HTTP 会话(Spring-websocket)

问题描述

亲爱的,我正在尝试在我的 WebSocketHandler 中获取 HTTPSession。当我使用'javax.websocket-api'时我可以成功地做到这一点,但我现在使用的是'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' 做到这一点的一个例子:

配置:

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

}

然后我正在注入 HTTPSession 修改握手:

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,当 WS 连接建立时,它就可以访问了:

    @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);
    }

我无法成功使用“Spring Websocket”做类似的事情。有什么解决办法吗?请不要从 StompJS 提出课程,因为我没有使用它。

标签: javawebsocketspring-websockethttpsession

解决方案


有这个可以使用:

**
 * 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 {

参考手册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,您从 HTTP 会话中需要的任何内容都将在WebSocketSession.getAttributes().


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