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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！

1 private string GetPath()  
2     {  
3         string strPath = "http://" + Request.ServerVariables["HTTP_HOST"] + Request.ServerVariables["PATH_INFO"] + "?" + Request.ServerVariables["QUERY_STRING"];  
4         if(strPath.EndsWith("?"))  
5         {  
6             strPath = strPath.Substring(0, strPath.Length - 1);  
7         }  
8         return strPath;  
9     }

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

 1 <table width=100% cellpadding=0 cellspacing=0 border=0 >  
 2   
 3 <script>   
 4   
 5 thisURL = document.URL;   
 6   
 7 thisHREF = document.location.href;   
 8   
 9 thisSLoc = self.location.href;   
10   
11 thisDLoc = document.location;   
12   
13 strwrite = "<tr><td valign=top>thisURL: </td><td>[" + thisURL + "]</td></tr>"   
14   
15 strwrite += "<tr><td valign=top>thisHREF: </td><td>[" + thisHREF + "]</td></tr>"  
16   
17 strwrite += "<tr><td valign=top>thisSLoc: </td><td>[" + thisSLoc + "]</td></tr>"  
18   
19 strwrite += "<tr><td valign=top>thisDLoc: </td><td>[" + thisDLoc + "]</td></tr>"  
20   
21 document.write( strwrite );   
22   
23 </script>   
24   
25 thisDLoc = document.location; <BR>  
26   
27 thisURL = document.URL; <BR>  
28   
29 thisHREF = document.location.href; <BR>  
30   
31 thisSLoc = self.location.href;<BR>  
32   
33 <script>   
34   
35 thisTLoc = top.location.href;   
36   
37 thisPLoc = parent.document.location;   
38   
39 thisTHost = top.location.hostname;   
40   
41 thisHost = location.hostname;   
42   
43 strwrite = "<tr><td valign=top>thisTLoc: </td><td>[" + thisTLoc + "]</td></tr>"  
44   
45 strwrite += "<tr><td valign=top>thisPLoc: </td><td>[" + thisPLoc + "]</td></tr>"  
46   
47 strwrite += "<tr><td valign=top>thisTHost: </td><td>[" + thisTHost + "]</td></tr>"  
48   
49 strwrite += "<tr><td valign=top>thisHost: </td><td>[" + thisHost + "]</td></tr>"  
50   
51 document.write( strwrite );   
52   
53 </script>   
54   
55 thisTLoc = top.location.href; <BR>  
56   
57 thisPLoc = parent.document.location; <BR>  
58   
59 thisTHost = top.location.hostname; <BR>  
60   
61 thisHost = location.hostname;<BR>  
62   
63 <script>   
64   
65 tmpHPage = thisHREF.split( "/" );   
66   
67 thisHPage = tmpHPage[ tmpHPage.length-1 ];   
68   
69 tmpUPage = thisURL.split( "/" );   
70   
71 thisUPage = tmpUPage[ tmpUPage.length-1 ];   
72   
73 strwrite = "<tr><td valign=top>thisHPage: </td><td>[" + thisHPage + "]</td></tr>"  
74   
75 strwrite += "<tr><td valign=top>thisUPage: </td><td>[" + thisUPage + "]</td></tr>"  
76   
77 document.write( strwrite );   
78   
79 </script><tr><td>  
80   
81 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝  
82 获取IP  
83 1、ASP.NET中获取  
84   
85 获取服务器的IP地址：   
86 using System.Net;   
87   
88 string myIP,myMac;  
89 System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;  
90 if ( addressList.Length>1)   
91 {  
92 myIP = addressList[0].ToString();   
93 myMac = addressList[1].ToString();   
94 }   
95 else   
96 {   
97 myIP = addressList[0].ToString();   
98 myMac = "没有可用的连接"；  
99 }

View Code

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

 1 <html>  
 2 <head>  
 3 <title></title>  
 4 <meta http-equiv="Content-Type" content="text/html; charset=gbk">  
 5 </head>  
 6   
 7 <body>  
 8   
 9 <object classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6" id="locator" style="display:none;visibility:hidden"></object>  
10 <object classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223" id="foo" style="display:none;visibility:hidden"></object>                                                          
11   
12 <form name="myForm">  
13 <br/>MAC地址：<input type="text" name="macAddress">  
14 <br/>IP地址：<input type="text" name="ipAddress">  
15 <br/>主机名：<input type="text" name="hostName">  
16 </form>  
17   
18 </body>  
19 </html>  
20 <script language="javascript">  
21 var sMacAddr="";  
22 var sIPAddr="";  
23 var sDNSName="";  
24   
25 var service = locator.ConnectServer();  
26 service.Security_.ImpersonationLevel=3;  
27 service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');  
28   
29 </script>  
30   
31 <script FOR="foo" EVENT="OnObjectReady(objObject,objAsyncContext)" LANGUAGE="JScript">  
32          if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true){  
33                            if(objObject.IPEnabled && objObject.IPAddress(0) !=null && objObject.IPAddress(0) != "undefined")  
34                                          sIPAddr = objObject.IPAddress(0);  
35                            if(objObject.MACAddress != null &&objObject.MACAddress != "undefined")  
36                      sMacAddr = objObject.MACAddress;  
37                            if(objObject.DNSHostName != null &&objObject.DNSHostName != "undefined")  
38                                          sDNSName = objObject.DNSHostName;  
39           }  
40 </script>  
41   
42 <script FOR="foo" EVENT="OnCompleted(hResult,pErrorObject, pAsyncContext)" LANGUAGE="JScript">  
43   
44         myForm.macAddress.value=sMacAddr;  
45 myForm.ipAddress.value=sIPAddr;  
46         myForm.hostName.value=sDNSName;  
47 </script>

View Code

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 = '';
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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原文地址：https://www.cnblogs.com/loyung/p/3213698.html