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

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.

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());
}

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())

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;
}
}