Global.asax.cs文件
public class MvcApplication : System.Web.HttpApplication
{
/// <summary>
/// 全局事件开始
/// </summary>
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas(); WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
Application.Lock();
Application["online"] = ;
Application.UnLock();
}
/// <summary>
/// 全局事件结束
/// </summary>
protected void Application_End()
{ }
/// <summary>
/// 单个用户事件开始
/// </summary>
protected void Session_Start()
{
Application.Lock();
int online = (int)Application["online"];
Application["online"] = online + ;
Session["LoginDate"] = DateTime.Now;
Application.UnLock();
}
/// <summary>
/// 单个用户事件结束
/// </summary>
protected void Session_End()
{
Application.Lock();
int online = (int)Application["online"];
Application["online"] = online - ;
Application.UnLock();
}
}
Controller
[HttpPost]
public string LoginCheck()
{
if (Session["LoginDate"] == null)
{
Session["LoginDate"]=DateTime.Now;
return "登录超时!";
}
DateTime loginDate = Convert.ToDateTime(Session["LoginDate"]);
TimeSpan ts = DateTime.Now - loginDate; //记算当时间时与Session中保存的时间差
string str = string.Format("已经登录{0}天{1}小时{2}分{3}秒", ts.Days, ts.Hours, ts.Minutes, ts.Seconds); //格式化输出
return str;
}
Html
<span id="online"></span>
<span id="LoginInfo"></span>
jQuery
<script type="text/javascript">
$(function () {
AjaxHtml();
});
function AjaxHtml() {
LoginCheck();
OnLineCheck();
setInterval(function () {
LoginCheck();
}, 10000);//登录时间显示每10秒更新一次
setInterval(function () {
OnLineCheck();
}, 60000);//在线人数每60秒更新一次
}
function LoginCheck() {
$.post('/LoginInfo/LoginCheck', {}, function (result) {
$("#LoginInfo").html(result);
});
}
function OnLineCheck() {
$("#online").html('在线人数 <span style="color:red;">@System.Web.HttpContext.Current.Application["online"]</span>');
}
</script>