remote.deliver（）将回答发送到远程会话（即客户端）在服务频道上发布的。

remote.deliver() sends the "answer" to the remote session (i.e. the client) that published on the service channel.

您应该将未经请求的消息发布到正常频道（服务器端尚不存在）。所以，你应该写类似

You should publish an unsolicited message to a normal channel (which on the server side does not exist yet). So, you should write something like

String channelName = "whatever - not beginning with /service";
getBayeux().createIfAbsent(channelName);
getBayeux().getChannel(channelName).publish(getServerSession(), output, null);