我不确定我到底要找什么，但我需要一个类似Keyed Object Pool的东西，但更多的是一个托管的对象集，我传递一个键和对象。Apache池你传递一个键给addObject（K键），工厂创建对象。不是我需要的，因为我已经有了对象。
我的场景是，我有一个Spring Boot 应用程序（ServerApp），其中有许多长期存在的WebSocketSession。WebSockets是来自硬件设备的连接，用于向ServerApp发送状态信息并侦听来自ServerApp的命令。ServerApp可以接受将向设备发送命令的Web服务调用。由于一次只有一个人可以访问设备，因此我需要管理对设备的访问。
控制器使用设备名称从池中查找设备。WebSocketHandler将在连接进入时添加设备：

静止控制器：

// web service call handler
@RequestMapping(value="/sendtocrom",method=RequestMethod.POST,consumes="text/plain")
public Response sentToDevice(
        @RequestHeader(value="Authorization") String authorization,
        @RequestParam(value="deviceName") String deviceName,
        @RequestBody String payload)
{
    try {
        DeviceWebSocket device = pool.borrowObject(deviceName); //wait for the device to become available
        device.getWebSocket().sendMessage(new TextMessage(payload)); //send data to the device via websocket
        pool.returnObject(deviceName); //return the device to the pool so other service calls can use it.
        return Response(true);   //return that message was sent
    } catch(NotAvailableException e) {
        return Response(false);  //return that we were not able to communicate with the device 
    }
}

Web套接字处理程序：

//when a connection comes in, add it to the pool
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
    String deviceName = getDeviceName(session); //deviceName passed in through a session header
    pool.add(deviceName,session);  //add the device to the pool
}

//when something comes in from the websocket, process it, and send a response
@Override
protected void handleTextMessage(WebSocketSession sesssion,TextMessage message) {
    String payload = message.getPayload();
    String deviceName = getDeviceName(session); //deviceName passed in through a session header}

    //process message

    try {
        //we need to lock the resource before sending incase a web service call is sending something
        DeviceWebSocket device = pool.borrowObject(deviceName); 
        device.getWebSocket().sendMessage(new TextMessage(new Response()));
        pool.returnObject(deviceName);
    } catch(Exception e) {
        //handle error
    }