如何使用signalr向asp.net核心中的特定组发送消息？

services.AddSignalR();

app.UseRouting();
app.UseEndpoints(endpoints =>
{
    endpoints.MapHub<YourHubClass>("/yourHubUrl");
});

public class YourHubClass : Hub
{
    public async Task SendMessageToGroup(string groupName, string message)
    {
        await Clients.Group(groupName).SendAsync("ReceiveMessage", message);
    }

    // 其他自定义方法...
}

public class YourController : Controller
{
    private readonly IHubContext<YourHubClass> _hubContext;

    public YourController(IHubContext<YourHubClass> hubContext)
    {
        _hubContext = hubContext;
    }

    public IActionResult SendMessage(string groupName, string message)
    {
        _hubContext.Clients.Group(groupName).SendAsync("ReceiveMessage", message);
        return Ok();
    }
}

var connection = new signalR.HubConnectionBuilder().withUrl("/yourHubUrl").build();

connection.start().then(function () {
    connection.invoke("SendMessageToGroup", "yourGroupName", "yourMessage");
}).catch(function (err) {
    console.error(err.toString());
});