session - 使用 Websockets 时无法在 Spring Controller 中获取 Session

Question

我正在将 Websockets SockJS 与 Spring MVC 框架一起使用。我尝试了工作正常的股票行情代码示例，但现在我想在我的 Controller 中获取 session ，但我找不到出路。

Client Code:
$scope.socket = new SockJS("ws/ws"); 
$scope.stompClient = Stomp.over($scope.socket); 
$scope.stompClient.connect("guest", "guest",connectCallback, errorCallback);

//in connectCallback
$scope.stompClient.subscribe('/topic/agent-sendstatus', showScreenPop);

    Java Code:
    @MessageMapping("/topic/agent-sendstatus")
        public void testmethod()
        {
            //How do i get Session here to further implement solution?

            template.convertAndSend("/topic/agent-sendstatus","bcd");
        }

Please suggest.

Answer 1

如果您指的是 WebSocket session ，Spring 4.1 允许您在传入客户端消息的 header 中获取 session 属性，这些属性可以通过 SimpMessageHeaderAccessor 访问。

@MessageMapping("/topic/agent-sendstatus")
public void testmethod(SimpMessageHeaderAccessor headerAccessor) {
    String sessionId = headerAccessor.getSessionId(); // Session ID
    Map<String, Object> attrs = headerAccessor.getSessionAttributes(); // Session Attributes
    ...
}