首先通过NuGet下载signalr包
在工程下新建一个类，继承Hub
public class DemoHub:Hub
{
public class Users
{
public string ConnectionId { get; set; }
public string Name { get; set; }
public string SId { get; set; }
}
//在线表
static List<Users> Connecteds = new List<Users>();
//验证
public void CheckedOnline(string name, string sid)
{
var id = Context.ConnectionId;
if (string.IsNullOrEmpty(name)||string.IsNullOrEmpty(sid))
{
Clients.Client(id).onExist("登录出错！");
}
if (Connecteds.Count(x=>x.Name==name)==0)
{
Connecteds.Add(new Users() { ConnectionId = id, Name = name, SId = sid });
}
else if(Connecteds.Count(x=>x.SId==sid)==0)
{
var oID = Connecteds.Find(x => x.Name == name).ConnectionId;
Clients.Client(id).onExist("被登录");
var mod = Connecteds.FirstOrDefault(x => x.Name == name);
Connecteds.Remove(mod);
Connecteds.Add(new Users() { ConnectionId = id, Name = name, SId = sid });
}
else if (Connecteds.Count(x=>x.SId==sid)==0)
{
Clients.Client(id).onExist("重复登录");
var mod = Connecteds.FirstOrDefault(x => x.Name == name);
Connecteds.Remove(mod);
}
}
//断开
public override System.Threading.Tasks.Task OnDisconnected(bool stopCalled)
{
var mod = Connecteds.FirstOrDefault(x=>x.ConnectionId==Context.ConnectionId);
if (mod!=null)
{
Connecteds.Remove(mod);
}
return base.OnDisconnected(stopCalled);
}
//重连
public override System.Threading.Tasks.Task OnReconnected()
{
return base.OnReconnected();
}
}
页面
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/jquery.signalR-2.2.0.min.js"></script>
<script src="@Url.Content("~/signalr/hubs")" type="text/javascript"></script>
<script type="text/javascript">
var hub = $.connection.demoHub;
$(function () {
//start
$.connection.hub.start().done(function () {
hub.server.CheckedOnline("@ViewBag.Name","@ViewBag.sid");
});
hub.client.onExist = function (msg) {
alert(msg);
}
//onReconnected
hub.client.onReconnected = function () {
hub = $.connection.demoHub;
$.connection.hub.start().done(function () {
hub.server.CheckedOnline("@ViewBag.Name", "@ViewBag.sid");
});
}
});
</script>
好了基本完成，就差一个提示后退出。
菜鸟第一次发文写程序，对于程序的不足欢迎探讨。
时间： 2024-08-26 00:20:39