如何在调用web-api中的特定方法时调用signalr集线器？

using Microsoft.AspNet.SignalR;

public class MyHub : Hub
{
    public void SendMessage(string message)
    {
        // 处理接收到的消息
        Clients.All.ReceiveMessage(message);
    }
}

using Microsoft.AspNet.SignalR;

public class MyController : ApiController
{
    public IHttpActionResult Post()
    {
        // 调用SignalR集线器中的方法
        var hubContext = GlobalHost.ConnectionManager.GetHubContext<MyHub>();
        hubContext.Clients.All.SendMessage("Hello from Web API!");

        return Ok();
    }
}

// 引入SignalR的JavaScript客户端库
<script src="~/Scripts/jquery.signalR-2.4.2.min.js"></script>
<script src="~/signalr/hubs"></script>

// 连接到SignalR集线器
var hub = $.connection.myHub;

// 定义接收消息的方法
hub.client.receiveMessage = function (message) {
    console.log("Received message: " + message);
};

// 启动SignalR连接
$.connection.hub.start().done(function () {
    console.log("SignalR connected.");
});