获取Url链接内容

一、获取链接整个HTML

    public string GetWholeHtmlCode(string url)
        {
            string strHtml = string.Empty;
            StreamReader strReader = null;
            HttpWebResponse wrpContent = null;      
            try
            {
                HttpWebRequest wrqContent = (HttpWebRequest)WebRequest.Create(strUrl);
                wrqContent.Timeout = 300000;
                wrpContent = (HttpWebResponse)wrqContent.GetResponse();
                if (wrpContent.StatusCode != HttpStatusCode.OK)
                {
                    flgPageRetrieved = false;
                    strHtml = "Sorry, the web page is not run successful";
                }
                if (wrpContent != null)
                {
                    strReader = new StreamReader(wrpContent.GetResponseStream(), Encoding.GetEncoding("utf-8"));
                    strHtml = strReader.ReadToEnd();
                }
            }
            catch (Exception e)
            {
                flgPageRetrieved = false;
                strHtml = e.Message;
            }
            finally
            {
                if (strReader != null)
                    strReader.Close();
                if (wrpContent != null)
                    wrpContent.Close();
            }
            return strHtml;
        }

获取其它如纯文本、图片地址、链接地址请参考All-In-One Code Framework (ASP.NET)，CSASPNETStripHtmlCode项目

‍

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.PathAndQuery

1、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=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>

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获取IP
1、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>