How to use

getAttributeNames

method

in

org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor

@Override
public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
    WebSocketHandler wsHandler, Map<String, Object> attributes) throws Exception {
  HttpSession session = getSession(request);
  if (session != null) {
    if (isCopyHttpSessionId()) {
      attributes.put(HTTP_SESSION_ID_ATTR_NAME, session.getId());
    }
    Enumeration<String> names = session.getAttributeNames();
    while (names.hasMoreElements()) {
      String name = names.nextElement();
      if (isCopyAllAttributes() || getAttributeNames().contains(name)) {
        attributes.put(name, session.getAttribute(name));
      }
    }
  }
  return true;
}

@Override
public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
    WebSocketHandler wsHandler, Map<String, Object> attributes) throws Exception {
  HttpSession session = getSession(request);
  if (session != null) {
    if (isCopyHttpSessionId()) {
      attributes.put(HTTP_SESSION_ID_ATTR_NAME, session.getId());
    }
    Enumeration<String> names = session.getAttributeNames();
    while (names.hasMoreElements()) {
      String name = names.nextElement();
      if (isCopyAllAttributes() || getAttributeNames().contains(name)) {
        attributes.put(name, session.getAttribute(name));
      }
    }
  }
  return true;
}

@Override
public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
    WebSocketHandler wsHandler, Map<String, Object> attributes) throws Exception {
  HttpSession session = getSession(request);
  if (session != null) {
    if (isCopyHttpSessionId()) {
      attributes.put(HTTP_SESSION_ID_ATTR_NAME, session.getId());
    }
    Enumeration<String> names = session.getAttributeNames();
    while (names.hasMoreElements()) {
      String name = names.nextElement();
      if (isCopyAllAttributes() || getAttributeNames().contains(name)) {
        attributes.put(name, session.getAttribute(name));
      }
    }
  }
  return true;
}