HttpContext.Current.Request.Url.ToString() 并不可靠。如果当前URL为 http://localhost/search.aspx?user=http://csharp.xdowns.com&tag=%BC%BC%CA%F5 通过HttpContext.Current.Request.Url.ToString()获取到的却是 http://localhost/search.aspxuser=http://csharp.xdowns.com&tag=¼¼Êõ 正确的方法是：HttpContext.Current.Request.Url.PathAndQuery1、通过ASP.NET获取如果测试的url地址是http://www.test.com/testweb/default.aspx, 结果如下：Request.ApplicationPath: /testwebRequest.CurrentExecutionFilePath: /testweb/default.aspxRequest.FilePath: /testweb/default.aspxRequest.Path: /testweb/default.aspxRequest.PhysicalApplicationPath: E:\WWW\testwebRequest.PhysicalPath: E:\WWW\testweb\default.aspxRequest.RawUrl: /testweb/default.aspxRequest.Url.AbsolutePath: /testweb/default.aspxRequest.Url.AbsoluteUrl: http://www.test.com/testweb/default.aspxRequest.Url.Host: www.test.comRequest.Url.LocalPath: /testweb/default.aspx 2、通过JS获取<table width=100% cellpadding=0 cellspacing=0 border=0 ><script> thisURL = document.URL; thisHREF = document.location.href; thisSLoc = self.location.href; thisDLoc = document.location; strwrite = "<tr><td valign=top>thisURL: </td><td>[" + thisURL + "]</td></tr>" strwrite += "<tr><td valign=top>thisHREF: </td><td>[" + thisHREF + "]</td></tr>" strwrite += "<tr><td valign=top>thisSLoc: </td><td>[" + thisSLoc + "]</td></tr>" strwrite += "<tr><td valign=top>thisDLoc: </td><td>[" + thisDLoc + "]</td></tr>" document.write( strwrite ); </script> thisDLoc = document.location; <BR>thisURL = document.URL; <BR>thisHREF = document.location.href; <BR>thisSLoc = self.location.href;<BR><script> thisTLoc = top.location.href; thisPLoc = parent.document.location; thisTHost = top.location.hostname; thisHost = location.hostname; strwrite = "<tr><td valign=top>thisTLoc: </td><td>[" + thisTLoc + "]</td></tr>" strwrite += "<tr><td valign=top>thisPLoc: </td><td>[" + thisPLoc + "]</td></tr>" strwrite += "<tr><td valign=top>thisTHost: </td><td>[" + thisTHost + "]</td></tr>" strwrite += "<tr><td valign=top>thisHost: </td><td>[" + thisHost + "]</td></tr>" document.write( strwrite ); </script> thisTLoc = top.location.href; <BR>thisPLoc = parent.document.location; <BR>thisTHost = top.location.hostname; <BR>thisHost = location.hostname;<BR><script> tmpHPage = thisHREF.split( "/" ); thisHPage = tmpHPage[ tmpHPage.length-1 ]; tmpUPage = thisURL.split( "/" ); thisUPage = tmpUPage[ tmpUPage.length-1 ]; strwrite = "<tr><td valign=top>thisHPage: </td><td>[" + thisHPage + "]</td></tr>" strwrite += "<tr><td valign=top>thisUPage: </td><td>[" + thisUPage + "]</td></tr>" document.write( strwrite ); </script><tr><td>＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝获取IP1、ASP.NET中获取获取服务器的IP地址： using System.Net; string myIP,myMac;System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList; if ( addressList.Length>1) 
{
myIP = addressList[0].ToString(); myMac = addressList[1].ToString(); 
} else { myIP = addressList[0].ToString(); myMac = "没有可用的连接"；} myIP地址就是服务器端的ip地址。获取客户端的ip地址，可以使用//获取登录者ip地址string ip = Request.ServerVariables["REMOTE_ADDR"].ToString(); 2、通过JS获取<html><head><title></title><meta http-equiv="Content-Type" content="text/html; charset=gbk"></head><body><object classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6" id="locator" style="display:none;visibility:hidden"></object><object classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223" id="foo" style="display:none;visibility:hidden"></object> <form name="myForm"> <br/>MAC地址：<input type="text" name="macAddress"> <br/>IP地址：<input type="text" name="ipAddress"> <br/>主机名：<input type="text" name="hostName"></form></body></html><script language="javascript"> var sMacAddr=""; var sIPAddr=""; var sDNSName=""; var service = locator.ConnectServer(); service.Security_.ImpersonationLevel=3; service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');</script><script FOR="foo" EVENT="OnObjectReady(objObject,objAsyncContext)" LANGUAGE="JScript"> if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true){ if(objObject.IPEnabled && objObject.IPAddress(0) !=null && objObject.IPAddress(0) != "undefined") sIPAddr = objObject.IPAddress(0); if(objObject.MACAddress != null &&objObject.MACAddress != "undefined") sMacAddr = objObject.MACAddress; if(objObject.DNSHostName != null &&objObject.DNSHostName != "undefined") sDNSName = objObject.DNSHostName; }</script><script FOR="foo" EVENT="OnCompleted(hResult,pErrorObject, pAsyncContext)" LANGUAGE="JScript"> myForm.macAddress.value=sMacAddr; myForm.ipAddress.value=sIPAddr; myForm.hostName.value=sDNSName;</script>