【原创作者】：丛兴滋（cncxz）[E-mail：cncxz@126.com]
demo下载地址 在线监测用户在线 （把这个loginin.aspx页面设为主页运行）
在原来的基础上稍加改动了下
首先建议个类库
下面有这几个类
ActiveUser.cs
代码
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
namespace OnlineUser
{
/// <summary>
///ActiveUser 的摘要说明
/// </summary>
public class ActiveUser
{
private readonly string _ticket; //票据名称
private readonly string _username; //登陆用户名
private readonly string _truename; //登陆用户名
private readonly string _roleid; //角色
private readonly DateTime _refreshtime; //最新刷新时间
private readonly DateTime _activetime; //最新活动时间
private readonly string _clientip; //登陆IP
public string Ticket { get { return _ticket; } }
public string UserName { get { return _username; } }
public string TrueName { get { return _truename; } }
public string RoleID { get { return _roleid; } }
public DateTime RefreshTime { get { return _refreshtime; } }
public DateTime ActiveTime { get { return _activetime; } }
public string ClientIP { get { return _clientip; } }
public ActiveUser()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
public ActiveUser(string Ticket, string UserName, string TrueName, string RoleID, string ClientIP)
{
this._ticket = Ticket;
this._username = UserName;
this._truename = TrueName;
this._roleid = RoleID;
this._refreshtime = DateTime.Now;
this._activetime = DateTime.Now;
this._clientip = ClientIP;
}
public ActiveUser(string Ticket, string UserName, string TrueName, string RoleID, DateTime RefreshTime, DateTime ActiveTime, string ClientIP)
{
this._ticket = Ticket;
this._username = UserName;
this._truename = TrueName;
this._roleid = RoleID;
this._refreshtime = RefreshTime;
this._activetime = ActiveTime;
this._clientip = ClientIP;
}
}
}
PassPort.cs
代码
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
namespace OnlineUser
{
/// <summary>
///PassPort 的摘要说明
/// </summary>
public class PassPort
{
private static DataTable _activeusers;
private int _activeTimeout;
private int _refreshTimeout;
//public PassPort()
//{
// //
// //TODO: 在此处添加构造函数逻辑
// //
//}
/// <summary>
/// 初始化在线用户表。
/// </summary>
private void userstableFormat()
{
if (_activeusers == null)
{
_activeusers = new DataTable("ActiveUsers");
DataColumn myDataColumn;
System.Type mystringtype;
mystringtype = System.Type.GetType("System.String");
System.Type mytimetype;
mytimetype = System.Type.GetType("System.DateTime");
myDataColumn = new DataColumn("Ticket", mystringtype);
_activeusers.Columns.Add(myDataColumn);
myDataColumn = new DataColumn("UserName", mystringtype);
_activeusers.Columns.Add(myDataColumn);
myDataColumn = new DataColumn("TrueName", mystringtype);
_activeusers.Columns.Add(myDataColumn);
myDataColumn = new DataColumn("RoleID", mystringtype);
_activeusers.Columns.Add(myDataColumn);
myDataColumn = new DataColumn("RefreshTime", mytimetype);
_activeusers.Columns.Add(myDataColumn);
myDataColumn = new DataColumn("ActiveTime", mytimetype);
_activeusers.Columns.Add(myDataColumn);
myDataColumn = new DataColumn("ClientIP", mystringtype);
_activeusers.Columns.Add(myDataColumn);
}
}
public PassPort()
{
userstableFormat(); //初始化在线用户表
//活动超时时间初始化 单位：分钟
try { _activeTimeout = int.Parse(ConfigurationSettings.AppSettings["ActiveTimeout"]); }
catch { _activeTimeout = 60; }
//自动刷新超时时间初始化 单位：分钟
try { _refreshTimeout = int.Parse(ConfigurationSettings.AppSettings["RefreshTimeout"]); }
catch { _refreshTimeout = 1; }
}
//全部用户列表
public DataTable ActiveUsers
{
get { return _activeusers.Copy(); }
}
/// <summary>
/// 新用户登陆。
/// </summary>
public void Login(ActiveUser user, bool SingleLogin)
{
DelTimeOut(); //清除超时用户
//if (SingleLogin)
//{
// //若是单人登陆则注销原来登陆的用户
// this.Logout(user.UserName, false);
//}
DataRow myRow;
try
{
myRow = _activeusers.NewRow();
myRow["Ticket"] = user.Ticket.Trim();
myRow["UserName"] = user.UserName.Trim();
myRow["TrueName"] = "" + user.TrueName.Trim();
myRow["RoleID"] = "" + user.RoleID.Trim();
myRow["ActiveTime"] = DateTime.Now;
myRow["RefreshTime"] = DateTime.Now;
myRow["ClientIP"] = user.ClientIP.Trim();
_activeusers.Rows.Add(myRow);
}
catch (Exception e)
{
throw (new Exception(e.Message));
}
_activeusers.AcceptChanges();
}
/// <summary>
///用户注销，根据Ticket或UserName。
/// </summary>
private void Logout(string strUserKey, bool byTicket)
{
DelTimeOut(); //清除超时用户
string strExpr;
strExpr = byTicket ? "Ticket='" + strUserKey.Trim() + "'" : "UserName='" + strUserKey.Trim() + "'";
DataRow[] curUser = _activeusers.Select(strExpr);
if (curUser.Length > 0)
{
for (int i = 0; i < curUser.Length; i++)
{
curUser[i].Delete();
}
}
_activeusers.AcceptChanges();
}
/// <summary>
/// 主动注销根据用户
/// </summary>
/// <param name="strUserName"></param>
private void LoginOut(string strUserName)
{
DelTimeOut(); //清除超时用户
string strExpr;
strExpr = "UserName='" + strUserName.Trim() + "'";
DataRow[] curUser = _activeusers.Select(strExpr);
if (curUser.Length > 0)
{
for (int i = 0; i < curUser.Length; i++)
{
curUser[i].Delete();
}
}
_activeusers.AcceptChanges();
}
/// <summary>
///用户注销，根据Ticket。
/// </summary>
/// <param name="strTicket">要注销的用户Ticket</param>
public void LogoutByTicket(string strTicket)
{
this.Logout(strTicket, false);
}
/// <summary>
///用户注销，根据Username。
/// </summary>
/// <param name="strTicket">要注销的用户Username</param>
public void LoginoutByUserName(string strUser)
{
this.LoginOut(strUser);
}
/// <summary>
///清除超时用户。
/// </summary>
private bool DelTimeOut()
{
string strExpr = "ActiveTime < #" + DateTime.Now.AddMinutes(0 - _activeTimeout) + "# or RefreshTime < #" + DateTime.Now.AddMinutes(0 - _refreshTimeout) + "#";
DataRow[] curUser = _activeusers.Select(strExpr);
if (curUser.Length > 0)
{
for (int i = 0; i < curUser.Length; i++)
{
curUser[i].Delete();
}
}
_activeusers.AcceptChanges();
return true;
}
/// <summary>
///更新用户活动时间。
/// </summary>
public void ActiveTime(string strTicket)
{
DelTimeOut();
string strExpr;
strExpr = "Ticket='" + strTicket + "'";
DataRow[] curUser;
curUser = _activeusers.Select(strExpr);
if (curUser.Length > 0)
{
for (int i = 0; i < curUser.Length; i++)
{
curUser[i]["ActiveTime"] = DateTime.Now;
curUser[i]["RefreshTime"] = DateTime.Now;
}
}
_activeusers.AcceptChanges();
}
/// <summary>
///更新系统自动刷新时间。
/// </summary>
public void RefreshTime(string strTicket)
{
DelTimeOut();
string strExpr;
strExpr = "Ticket='" + strTicket + "'";
DataRow[] curUser;
curUser = _activeusers.Select(strExpr);
if (curUser.Length > 0)
{
for (int i = 0; i < curUser.Length; i++)
{
curUser[i]["RefreshTime"] = DateTime.Now;
}
}
_activeusers.AcceptChanges();
}
private ActiveUser SingleUser(string strUserKey, bool byTicket)
{
strUserKey = strUserKey.Trim();
string strExpr;
ActiveUser myuser;
strExpr = byTicket ? "Ticket='" + strUserKey + "'" : "UserName='" + strUserKey + "'";
DataRow[] curUser = _activeusers.Select(strExpr);
if (curUser.Length > 0)
{
string myTicket = (string)curUser[0]["Ticket"];
string myUser = (string)curUser[0]["UserName"];
string myName = (string)curUser[0]["TrueName"];
string myRoleID = (string)curUser[0]["RoleID"];
DateTime myActiveTime = (DateTime)curUser[0]["ActiveTime"];
DateTime myRefreshtime = (DateTime)curUser[0]["RefreshTime"];
string myClientIP = (string)curUser[0]["ClientIP"];
myuser = new ActiveUser(myTicket, myUser, myName, myRoleID, myActiveTime, myRefreshtime, myClientIP);
}
else
{
myuser = new ActiveUser("", "", "", "", "");
}
return myuser;
}
/// <summary>
///按Ticket获取活动用户。
/// </summary>
public ActiveUser SingleUser_byTicket(string strTicket)
{
return this.SingleUser(strTicket, true);
}
/// <summary>
///按UserName获取活动用户。
/// </summary>
public ActiveUser SingleUser_byUserName(string strUserName)
{
return this.SingleUser(strUserName, false);
}
/// <summary>
///按Ticket判断用户是否在线。
/// </summary>
public bool IsOnline_byTicket(string strTicket)
{
return (bool)(this.SingleUser(strTicket, true).UserName != string.Empty);
}
/// <summary>
///按UserName判断用户是否在线。
/// </summary>
public bool IsOnline_byUserName(string strUserName)
{
return (bool)(this.SingleUser(strUserName, false).UserName != string.Empty);
}
/// <summary>
/// 快速检测用户是否在线
/// </summary>
/// <param name="strUserName"></param>
/// <returns></returns>
public bool IsOnlinebyUserName(string strUserName)
{
string strExpr ="UserName='" + strUserName + "'";
DataRow[] curUser = _activeusers.Select(strExpr);
return curUser.Length > 0;
}
}
}
Refresh.cs
代码
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
namespace OnlineUser
{
/// <summary>
///Refresh 的摘要说明
/// </summary>
public class Refresh : PlaceHolder
{
public Refresh()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
/// <summary>
/// 设置存储Ticket的Session名称，默认为Ticket。
/// </summary>
public virtual string SessionName
{
get
{
object obj1 = this.ViewState["SessionName"];
if (obj1 != null) { return ((string)obj1).Trim(); }
return "Ticket";
}
set
{
this.ViewState["SessionName"] = value;
}
}
protected override void Render(HtmlTextWriter writer)
{
string myTicket = (string)this.Page.Session[this.SessionName];
if (myTicket != null)
{
PassPort myPass = new PassPort();
myPass.RefreshTime(myTicket);
writer.Write("OK：" + DateTime.Now.ToString());
}
else
{
writer.Write("Sorry：" + DateTime.Now.ToString());
}
base.Render(writer);
}
}
}
Script.cs
代码
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Text;
namespace OnlineUser
{
/// <summary>
///Script 的摘要说明
/// </summary>
public class Script : PlaceHolder
{
public Script()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
/// <summary>
/// 设置js自动刷新的间隔时间，默认为25秒。
/// </summary>
public virtual int RefreshTime
{
get
{
object obj1 = this.ViewState["RefreshTime"];
if (obj1 != null) { return int.Parse(((string)obj1).Trim()); }
return 25;
}
set
{
this.ViewState["RefreshTime"] = value;
}
}
protected override void Render(HtmlTextWriter writer)
{
//从web.config中读取xmlhttp的访问地址
string refreshUrl = (string)ConfigurationSettings.AppSettings["refreshUrl"];
StringBuilder st = new StringBuilder();
st.Append("<script type=\"text/javascript\">\n");
st.Append("window.attachEvent(\"onload\", " + this.ClientID + "_postRefresh);\n");
st.Append(" var " + this.ClientID + "_xmlhttp=null;\n");
st.Append("function " + this.ClientID + "_postRefresh(){\n");
st.Append(" var " + this.ClientID + "_xmlhttp = new ActiveXObject(\"Msxml2.XMLHTTP\");\n");
st.Append(this.ClientID + "_xmlhttp.Open(\"POST\", \"" + refreshUrl + "\", false);\n");
st.Append(this.ClientID + "_xmlhttp.Send();\n");
st.Append("var refreshStr= " + this.ClientID + "_xmlhttp.responseText;\n");
st.Append("try {\n");
st.Append(" var refreshStr2=refreshStr;\n");
st.Append("}\n");
st.Append(" catch(e) {}\n");
st.Append(" setTimeout(\"" + this.ClientID + "_postRefresh()\"," + this.RefreshTime.ToString() + "000);\n");
st.Append(" }\n");
st.Append("</script>\n");
writer.Write(writer.NewLine);
writer.Write(st.ToString());
writer.Write(writer.NewLine);
base.Render(writer);
}
}
}
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