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:

<body MS_POSITIONING="GridLayout">
        
<form id="Form2" method="post" runat="server">
            
<FONT face="宋体">
                
<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></FONT>
        
</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+"<br/>"
                
+Page.Request.CurrentExecutionFilePath+"<br/>"
                
+Page.Request.UserHostAddress+"<br/>"
                
+Page.Request.Url.Host+"<br/>"
                
+Page.Request.RawUrl+"<br/>"
                
+Page.Request.UserHostName+"<br/>"
                
+Page.Request.Url.HostNameType+"<br/>"
                
+Page.Request.Url.Port+"<br/>"
                
+Page.Request.UrlReferrer.Host+"<br/>"
                
+Page.Request.Url.LocalPath+"<br/>"
                
+Page.Request.Url.Authority+"<br/>"
                
+Page.Request.Url.UserInfo+"<br/>"
                
+"<br/>";
        
        }


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
+"<br/>"
                
+System.Web.HttpContext.Current.Request.ApplicationPath+"<br/>"
                
+System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+"<br/>"
                
+System.Web.HttpContext.Current.Request.RawUrl+"<br/>"
                
+System.Web.HttpContext.Current.Request.Url+"<br/>"
                
+System.Web.HttpContext.Current.Request.UserHostAddress+"<br/>"
                
+System.Web.HttpContext.Current.Request.UserHostName+"<br/>"
                
+System.Web.HttpContext.Current.Request.RequestType+"<br/>"
                
+System.Web.HttpContext.Current.Request.UrlReferrer.Host+"<br/>"
                
+System.Web.HttpContext.Current.Request.UrlReferrer.HostNameType+"<br/>"
                
+System.Web.HttpContext.Current.Request.Path+"<br/>"
                
+System.Web.HttpContext.Current.Request.Url.Port+"<br/>"
                
+System.Web.HttpContext.Current.Request.Url.IsDefaultPort.ToString()+"<br/>"
                
+System.Web.HttpContext.Current.Request.Url.IsFile.ToString()+"<br/>"
                
+System.Web.HttpContext.Current.Request.Url.LocalPath+"<br/>"
                
+"<br/>";
        
        }


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] + "<br>");
                String[] arr2
=coll.GetValues(arr1[loop1]);
                
for (loop2 = 0; loop2 < arr2.Length; loop2++
                
{
                    
this.lbInfo3.Text+=("Value " + loop2 + "" + Server.HtmlEncode(arr2[loop2]) + "<br>");
                }

            }

        }

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