[英]Multiple rooms in Spring using STOMP
Is it possible to create rooms with STOMP and Spring 4?是否可以使用 STOMP 和 Spring 4 创建房间? Socket.IO has rooms built in, so I'm wondering if Spring has this
Socket.IO 有房间内置,所以我想知道 Spring 是否有这个
My code at the moment:我目前的代码:
@MessageMapping("/room/greet/{room}")
@SendTo("/room/{room}")
public Greeting greet(@DestinationVariable String room, HelloMessage message) throws Exception {
return new Greeting("Hello, " + room + "!");
}
It would be ideal to have @SendTo("/room/{room}")最好有 @SendTo("/room/{room}")
however, I am limited to:但是,我仅限于:
@SendTo("/room/room1")
@SendTo("/room/room2")
@SendTo("/room/room3")
etc...which is VERY VERY unideal等等......这是非常非常不理想的
The client is:客户是:
stompClient.subscribe('/room/' + roomID, function(greeting){
showGreeting(JSON.parse(greeting.body).content);
});
where roomID can be room1, room2, or room3... What If I want more rooms?其中 roomID 可以是 room1、room2 或 room3... 如果我想要更多房间怎么办? It feels like such a pain right now
现在感觉好痛
It looks like this "room" feature is actually a publish/subscribe mechanism, something achieved with topics in Spring Websocket support (see STOMP protocol support and destinations for more info on this). 看起来这个“房间”功能实际上是一个发布/订阅机制,这是通过Spring Websocket支持中的主题实现的(有关此内容的更多信息,请参阅STOMP协议支持和目标 )。
With this example: 有了这个例子:
@Controller
public class GreetingController {
@MessageMapping("/room/greeting/{room}")
public Greeting greet(@DestinationVariable String room, HelloMessage message) throws Exception {
return new Greeting("Hello, " + message.getName() + "!");
}
}
If a message is sent to "/room/greeting/room1", then the return value Greeting will be automatically sent to "/topic/room/greeting/room1", so the initial destination prefixed with "/topic". 如果消息被发送到“/ room / greeting / room1”,则返回值Greeting将自动发送到“/ topic / room / greeting / room1”,因此初始目的地前缀为“/ topic”。
If you wish to customize the destination, you can use @SendTo
just like you did, or use a MessagingTemplate like this: 如果您想自定义目的地,可以像使用
@SendTo
一样使用@SendTo
,或者像这样使用MessagingTemplate:
@Controller
public class GreetingController {
private SimpMessagingTemplate template;
@Autowired
public GreetingController(SimpMessagingTemplate template) {
this.template = template;
}
@MessageMapping("/room/greeting/{room}")
public Greeting greet(@DestinationVariable String room, HelloMessage message) throws Exception {
Greeting greeting = new Greeting("Hello, " + message.getName() + "!");
this.template.convertAndSend("/topic/room/"+room, greeting);
}
}
I think taking a quick look at the reference documentation and some useful examples, such as a portfolio app and a chat app should be useful. 我想快速查看参考文档和一些有用的示例,例如投资组合应用程序和聊天应用程序应该很有用。
You can use netty socket the implementation of socket io in java可以使用netty socket在java中实现socket io
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