asp.net获取网站路径

引用自：
asp.net获取网站路径
http://hi.baidu.com/zhangfengbang/blog/item/5f99d74b0ce661f883025cbc.html
HttpRequest 成员
http://msdn.microsoft.com/zh-cn/library/system.web.httprequest_members(v=VS.80).aspx
ASP.NET获取网站根目录的url的函数，很简单
http://www.xueit.com/html/2009-03/21_932_00.html
 

 

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网站在服务器磁盘上的物理路径: HttpRuntime.AppDomainAppPath
虚拟程序路径: HttpRuntime.AppDomainAppVirtualPath

任何于Request/HttpContext.Current等相关的方法, 都只能在有请求上下文或者页面时使用. 即在无请求上下文时,HttpContext.Current为null. 而上面提到的方法一直可用.

对于全局Cache对象的访问亦然.

 

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示例：输出asp.net 网站路径。 

private   void  responseHtml()
    {
         System.Text.StringBuilder sb  =   new  System.Text.StringBuilder();
   // 输出:当前时间: 2007-08-30 11:03:49
         sb.Append( string .Format( " 当前时间: {0} " , Server.HtmlEncode(DateTime.Now.ToString())));
         sb.Append( " <br /> " );

   // 当前请求的虚拟路径: /aDirectory/Sample/responseHtml.aspx
         sb.Append( string .Format( " 当前请求的虚拟路径: {0} " ,Server.HtmlEncode(Request.CurrentExecutionFilePath)));
         sb.Append( " <br /> " );

   // 获取当前应用程序的根目录路径: /aDirectory
         sb.Append( string .Format( " 获取当前应用程序的根目录路径: {0} " , Server.HtmlEncode(Request.ApplicationPath)));
         sb.Append( " <br /> " );

   // 当前请求的虚拟路径: /aDirectory/Sample/responseHtml.aspx
         sb.Append( string .Format( " 当前请求的虚拟路径: {0} " ,Server.HtmlEncode(Request.FilePath)));
         sb.Append( " <br /> " );

   // 当前请求的虚拟路径: /aDirectory/Sample/responseHtml.aspx
         sb.Append( string .Format( " 当前请求的虚拟路径: {0} " ,Server.HtmlEncode(Request.Path)));
         sb.Append( " <br /> " );

   // 获取当前正在执行的应用程序的根目录的物理文件系统路径: E:\Visual Studio 2005\
         sb.Append( string .Format( " 获取当前正在执行的应用程序的根目录的物理文件系统路径: {0} " , Server.HtmlEncode(Request.PhysicalApplicationPath)));
         sb.Append( " <br /> " );

   // 获取与请求的 URL 相对应的物理文件系统路径: E:\Visual Studio 2005\\aDirectory\
         sb.Append( string .Format( " 获取与请求的 URL 相对应的物理文件系统路径: {0} " , Server.HtmlEncode(Request.PhysicalApplicationPath)));
         sb.Append( " <br /> " );
         Response.Write(sb.ToString());
     }

 

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在ASP.NET编程中经常需要用Request获取url的有关信息.

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.PathInfo:
Request.PhysicalApplicationPath:          E:\WWW\testweb\
Request.PhysicalPath:                         E:\WWW\testweb\default.aspx
Request.RawUrl:                                 /testweb/default.aspx
Request.Url.AbsolutePath:                    /testweb/default.aspx
Request.Url.AbsoluteUri:                      http://www.test.com/testweb/default.aspx
Request.Url.Host:                                www.test.com
Request.Url.LocalPath:                        /testweb/default.aspx 

当url中带参数时可以使用:
HttpContext.Current.Request.Url.PathAndQuery.ToString()//

本页地址:   Request.URL; 

上页地址:  
Request.UrlReferrer  
Request.ServerViables["http_referer"]  
Request.RawUrl  
Request.RawUrl.QueryAndPath  
System.IO.Path.GetFileName(Request.FilePath.ToString()) 

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获取网站根目录的url源代码--2010.05.09
http://www.xueit.com/html/2009-03/21_932_00.html

public   static   string  GetRootURI()
    {
         string  AppPath  =   "" ;
        HttpContext HttpCurrent  =  HttpContext.Current;
        HttpRequest Req;
         if  (HttpCurrent  !=   null )
        {
            Req  =  HttpCurrent.Request;
             string  UrlAuthority  =  Req.Url.GetLeftPart(UriPartial.Authority);
             if  (Req.ApplicationPath  ==   null   ||  Req.ApplicationPath  ==   " / " )
                 // 直接安装在   Web   站点   
                AppPath  =  UrlAuthority;
             else
                 // 安装在虚拟子目录下   
                AppPath  =  UrlAuthority  +  Req.ApplicationPath;
        }
         return  AppPath;
    }

可修改为静态属性 

private   static   string  rootURI;

     ///   <summary>
     ///  获得网站根目录的url的函数
     ///   </summary>
     ///   <returns> 应用程序根目录 eg:   http://www.xxx.net :2156/im </returns>
     public   static   string  RootURI
    {
         get
        {
             if  ( string .IsNullOrEmpty(rootURI))
            {
                HttpContext HttpCurrent  =  HttpContext.Current;
                HttpRequest Req;
                 if  (HttpCurrent  !=   null )
                {
                    Req  =  HttpCurrent.Request;

                     string  UrlAuthority  =  Req.Url.GetLeftPart(UriPartial.Authority);
                     if  (Req.ApplicationPath  ==   null   ||  Req.ApplicationPath  ==   " / " )
                         // 直接安装在   Web   站点   
                        rootURI  =  UrlAuthority;
                     else
                         // 安装在虚拟子目录下   
                        rootURI  =  UrlAuthority  +  Req.ApplicationPath;
                }
            }

             return  rootURI;
        }
    }