信号器返回模型对象

Question

故事是这样的，我有房间模型课程。我想使用 Signalr 返回 json。是否可以 ？如果是，我该如何使用它？

PS：我知道我不会将房间物品退还给客户。

public List<RoomModel> GetRooms()
        {
            GameUser user = _gameService.GetUserByClientId(Context.ConnectionId);

        var room = _gameService.GetAllowedRooms(user).Select(r => new RoomModel
        {
            Name = r.Name,
            Count = 0,
            Private = r.Private,
            Closed = r.Closed,
        }).ToList();

        return room;
    }

Answer 1

当您将对象发送到客户端时，SignalR 会自动序列化您的对象。（我假设你的客户端是javascript。）

正如您在此示例中所看到的，它们正在发送ShapeModel要在 javascript 中处理的复杂对象。序列化全部自动化。

如果您的示例中的方法是集线器方法，我建议您以不同的方式结束它。您可能会调用客户端事件，而不是返回值。所以：

public class RoomHub : Hub {
    public void GetRooms() {
        List<Room> rooms = new List<Room>();
        rooms.Add( new Room{ Name = "Room1", Count = 12, Closed = true, Private = false});
        rooms.Add( new Room{ Name = "Room2", Count = 20, Closed = false, Private = true});

        // sending a list of room objects
        Clients.Client(Context.ConnectionId).roomInfo(rooms);
    }
}

// Room class (your complex object)
public class Room
{
    public string Name { get; set; }
    public int Count { get; set; }
    public bool Private { get; set; }
    public bool Closed { get; set; }
}

请参阅此处有关从集线器方法调用的详细信息。

然后是 JavaScript 客户端：

var roomHub = $.connection.roomHub;

roomHub.client.roomInfo = function (rooms) {
    // the parameter rooms is a serialized List<Room>
    // which here will be an array of room objects.
    console.log(rooms);
    // You can read the room properties as well
    for (i=0; i<rooms.length; ++i) {
        console.log(rooms[i].Name);
        console.log(rooms[i].Count);
    }  
}

$.connection.hub.start().done(function () {
    console.log("You are connected");
    roomHub.server.getRooms();
});

在我的浏览器控制台上：