asp.net和脚本获取当前的URL、IP地址

时间：2023-03-09 13:19:57
asp.net和脚本获取当前的URL、IP地址

介绍一下ASP.NET取得当前页面的完整URL 的方放，icech做成了函数，直接用吧！

 private string GetPath()

     {

         string strPath = "http://" + Request.ServerVariables["HTTP_HOST"] + Request.ServerVariables["PATH_INFO"] + "?" + Request.ServerVariables["QUERY_STRING"];

         if(strPath.EndsWith("?"))

         {

             strPath = strPath.Substring(, strPath.Length - );

         }

         return strPath;

     }

asp.net获取URL和IP地址
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:                 /testweb
Request.CurrentExecutionFilePath:        /testweb/default.aspx
Request.FilePath:                        /testweb/default.aspx
Request.Path:                            /testweb/default.aspx
Request.PhysicalApplicationPath:         E:/WWW/testwebRequest.PhysicalPath:                    E:/WWW/testweb/default.aspx
Request.RawUrl:                          /testweb/default.aspx
Request.Url.AbsolutePath:                /testweb/default.aspx
Request.Url.AbsoluteUrl:                http://www.test.com/testweb/default.aspx
Request.Url.Host:                       http://www.test.com/
Request.Url.LocalPath:                   /testweb/default.aspx

2、通过JS获取

 <table width=% cellpadding= cellspacing= border= >  

 <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- ];   

 tmpUPage = thisURL.split( "/" );   

 thisUPage = tmpUPage[ tmpUPage.length- ];   

 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IP

 、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>)

 {

 myIP = addressList[].ToString();

 myMac = addressList[].ToString();

 }

 else

 {

 myIP = addressList[].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>

整理：

Request.ServerVariables("REMOTE_ADDR") 来取得客户端的IP地址，但如果客户端是使用代理服务器来访问，那取到的就是代理服务器的IP地址，而不是真正的客户端IP地址。

要想透过代理服务器取得客户端的真实IP地址，就要使用 Request.ServerVariables("HTTP_X_FORWARDED_FOR") 来读取。

不过要注意的事，并不是每个代理服务器都能用 Request.ServerVariables("HTTP_X_FORWARDED_FOR") 来读取客户端的真实 IP，有些用此方法读取到的仍然是代理服务器的IP。

还有一点需要注意的是：如果客户端没有通过代理服务器来访问，那么用 Request.ServerVariables ("HTTP_X_FORWARDED_FOR") 取到的值将是空的。因此，如果要在程序中使用此方法，可以这样处理：
......
userip = Request.ServerVariables("HTTP_X_FORWARDED_FOR")
If userip = "" Then userip = Request.ServerVariables("REMOTE_ADDR")
......

//方法一
HttpContext.Current.Request.UserHostAddress;

//方法二
HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

//方法三
string strHostName = System.Net.Dns.GetHostName();
string clientIPAddress = System.Net.Dns.GetHostAddresses(strHostName).GetValue(0).ToString();

//方法四（无视代理）
HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

客户端：

//方法五
var ip = '<!--#echo var="REMOTE_ADDR"-->';
alert("Your IP address is "+ip);

//方法六（无视代理）
function GetLocalIPAddress() 
{ 
    var obj = null; 
    var rslt = ""; 
    try 
    { 
        obj = new ActiveXObject("rcbdyctl.Setting"); 
        rslt = obj.GetIPAddress; 
        obj = null; 
    } 
    catch(e) 
    { 
        // 
    } 
     
    return rslt; 
} 
来自印度的MCT Maulik Patel提供了一种服务端的解决方案，很好：

if(Context.Request.ServerVariables["HTTP_VIA"]!=null) // 服务器， using proxy
{ 
       得到真实的客户端地址
     ip=Context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();  // Return real client IP.
}
else//如果没有使用代理服务器或者得不到客户端的ip  not using proxy or can't get the Client IP
{ 
      
      //得到服务端的地址
     ip=Context.Request.ServerVariables["REMOTE_ADDR"].ToString(); //While it can't get the Client IP, it will return proxy IP.
}

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