web程序中获取应用程序系统变量的方法（ For.net 1.1)

获取系统变量在.net 的web应用程序中的确是非常方便，比如获取 "http://ap2:8080/"或者"http://10.0.0.1/mypplication/"等诸如此类的系统变量。
注：本文主要是针对.net Framework 1.0、1.1的情况，因为.net 2.0的命名空间已经发生了很大的变化，在后面的文章中将会专门加以介绍。

为描述方便，先新建一aspx文件，前台文件如下：

<asp:Button id="btn_Page" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 16px" runat="server"

Text="通过Page获取"></asp:Button>

<asp:Label id="lbInfo1" style="Z-INDEX: 102; LEFT: 48px; POSITION: absolute; TOP: 56px" runat="server"></asp:Label>

<asp:Button id="btn_ServerVal" style="Z-INDEX: 103; LEFT: 520px; POSITION: absolute; TOP: 16px"

runat="server" Text="通过ServerVariables获取"></asp:Button>

<asp:Label id="lbInfo2" style="Z-INDEX: 104; LEFT: 48px; POSITION: absolute; TOP: 80px" runat="server"></asp:Label>

<asp:Label id="lbInfo3" style="Z-INDEX: 105; LEFT: 48px; POSITION: absolute; TOP: 104px" runat="server"></asp:Label>

<asp:Button id="btn_Cintext" style="Z-INDEX: 106; LEFT: 280px; POSITION: absolute; TOP: 16px"

runat="server" Text="通过Context获取"></asp:Button>

</form>

</body>

第一种方法，直接在在页面中获取。利用Page.Request命名空间。

private void btn_Page_Click(object sender, System.EventArgs e)

{

this.lbInfo2.Text="";

this.lbInfo3.Text="";

this.lbInfo1.Text=Page.Request.ApplicationPath+" "

+Page.Request.CurrentExecutionFilePath+" "

+Page.Request.UserHostAddress+" "

+Page.Request.Url.Host+" "

+Page.Request.RawUrl+" "

+Page.Request.UserHostName+" "

+Page.Request.Url.HostNameType+" "

+Page.Request.Url.Port+" "

+Page.Request.UrlReferrer.Host+" "

+Page.Request.Url.LocalPath+" "

+Page.Request.Url.Authority+" "

+Page.Request.Url.UserInfo+" "

+" ";

}

第二种方法：在非Web项目中用Context的Request方法。

private void btn_Cintext_Click(object sender, System.EventArgs e)

{

this.lbInfo1.Text="";

this.lbInfo3.Text="";

this.lbInfo2.Text=

System.Web.HttpContext.Current.Server.MachineName+" "

+System.Web.HttpContext.Current.Request.ApplicationPath+" "

+System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+" "

+System.Web.HttpContext.Current.Request.RawUrl+" "

+System.Web.HttpContext.Current.Request.Url+" "

+System.Web.HttpContext.Current.Request.UserHostAddress+" "

+System.Web.HttpContext.Current.Request.UserHostName+" "

+System.Web.HttpContext.Current.Request.RequestType+" "

+System.Web.HttpContext.Current.Request.UrlReferrer.Host+" "

+System.Web.HttpContext.Current.Request.UrlReferrer.HostNameType+" "

+System.Web.HttpContext.Current.Request.Path+" "

+System.Web.HttpContext.Current.Request.Url.Port+" "

+System.Web.HttpContext.Current.Request.Url.IsDefaultPort.ToString()+" "

+System.Web.HttpContext.Current.Request.Url.IsFile.ToString()+" "

+System.Web.HttpContext.Current.Request.Url.LocalPath+" "

+" ";

}

第三种方法：可以从Request.ServerVariables的集合中获取。获取的变量也最全。

private void btn_ServerVal_Click(object sender, System.EventArgs e)

{

this.lbInfo1.Text="";

this.lbInfo2.Text="";

int loop1, loop2;

System.Collections.Specialized.NameValueCollection coll;

//以下两种方式均可

//coll=Page.Request.ServerVariables;

coll=System.Web.HttpContext.Current.Request.ServerVariables;

this.lbInfo3.Text="";

// Get names of all keys into a string array.

String[] arr1 = coll.AllKeys;

for (loop1 = 0; loop1 < arr1.Length; loop1++)

{

this.lbInfo3.Text+=("Key: " + arr1[loop1] + " ");

String[] arr2=coll.GetValues(arr1[loop1]);

for (loop2 = 0; loop2 < arr2.Length; loop2++)

{

this.lbInfo3.Text+=("Value " + loop2 + ": " + Server.HtmlEncode(arr2[loop2]) + " ");

}

亦可用于 Web service

注意，以上方法获取IP未必真实。

posted @ 2007-12-29 13:41 邀月阅读(847) 评论(0) 编辑收藏举报

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web程序中获取应用程序系统变量的方法（ For.net 1.1)

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