如何把物理路径转换成虚拟路径

1 什么是物理路径？什么是虚拟路径？

(1) 例子：

用IIS举个例子：

WEB服务目录是d:\路径

那么用HTTP访问网站根目录的时候，其实访问的是d:\路径,那么其中虚拟路径就是\（根），物理路径就是d:\路径

(2) 我自己的理解：绝对路径一般都是带有磁盘完成路径， 而虚拟路径一般不带有磁盘

2 程序中虚拟路径和物理路径的转化

#region 物理路径和相对路径的转换

//本地路径转换成URL相对路径

private string urlconvertor(string imagesurl1)

{

string tmpRootDir = Server.MapPath(System.Web.HttpContext.Current.Request.ApplicationPath.ToString())//获取程序根目录

string imagesurl2 = imagesurl1.Replace(tmpRootDir, "")//转换成相对路径

imagesurl2 = imagesurl2.Replace(@"\", @"/")

//imagesurl2 = imagesurl2.Replace(@"Aspx_Uc/", @"")

return imagesurl2

}

//相对路径转换成服务器本地物理路径

private string urlconvertorlocal(string imagesurl1)

{

string tmpRootDir = Server.MapPath(System.Web.HttpContext.Current.Request.ApplicationPath.ToString())//获取程序根目录

string imagesurl2 = tmpRootDir + imagesurl1.Replace(@"/", @"\")//转换成绝对路径

return imagesurl2

}

#endregion

3 下载的方法

/// <summary>

/// 获取物理地址

/// </summary>

public static string MapPathFile(string FileName)

{

return HttpContext.Current.Server.MapPath(FileName)

}

/// <summary>

/// 普通下载

/// </summary>

/// <param name="FileName">文件虚拟路径</param>

public static bool DownLoadold(string FileName)

{

bool bools = false

string destFileName = MapPathFile(FileName)

if (File.Exists(destFileName))

{

FileInfo fi = new FileInfo(destFileName)

HttpContext.Current.Response.Clear()

HttpContext.Current.Response.ClearHeaders()

HttpContext.Current.Response.Buffer = false

HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachmentfilename=" + HttpUtility.UrlEncode(Path.GetFileName(destFileName), System.Text.Encoding.UTF8))

HttpContext.Current.Response.AppendHeader("Content-Length", fi.Length.ToString())

HttpContext.Current.Response.ContentType = "application/octet-stream"

HttpContext.Current.Response.WriteFile(destFileName)

HttpContext.Current.Response.Flush()

HttpContext.Current.Response.End()

bools = true

}

return bools

}

public static void ResponseFile(string path, HttpContext context)

{

context = HttpContext.Current

System.IO.Stream iStream = null

byte[] buffer = new Byte[10000]

int length

long dataToRead

string filename = System.IO.Path.GetFileName(path)

try

{

iStream = new System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read)

dataToRead = iStream.Length

context.Response.ContentType = "application/octet-stream"

context.Response.AddHeader("Content-Disposition", "attachmentfilename=" + HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8))

while (dataToRead >0)

{

if (context.Response.IsClientConnected)

{

length = iStream.Read(buffer, 0, 10000)

context.Response.OutputStream.Write(buffer, 0, length)

context.Response.Flush()

buffer = new Byte[10000]

dataToRead = dataToRead - length

}

else

{

dataToRead = -1

}

}

}

catch (Exception ex)

{

context.Response.Write(ex.Message)

}

finally

{

if (iStream != null)

{

iStream.Close()

}

}

}

public static void ResponseFile(string path, string fileName, HttpContext context)

{

context = HttpContext.Current

System.IO.Stream iStream = null

byte[] buffer = new Byte[10000]

int length

long dataToRead

try

{

iStream = new System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read)

dataToRead = iStream.Length

context.Response.ContentType = "application/octet-stream"

context.Response.AddHeader("Content-Disposition", "attachmentfilename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8))

while (dataToRead >0)

{

if (context.Response.IsClientConnected)

{

length = iStream.Read(buffer, 0, 10000)

context.Response.OutputStream.Write(buffer, 0, length)

context.Response.Flush()

buffer = new Byte[10000]

dataToRead = dataToRead - length

}

else

{

dataToRead = -1

}

}

}

catch (Exception ex)

{

context.Response.Write(ex.Message)

}

finally

{

if (iStream != null)

{

iStream.Close()

}

}

}

一、就是将你的配置文件安装在system32目录下

二、在你的服务中通过注册表来获得这个服务的安装路径

/*

Windows服务在系统安装后会在注册表的 "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\[ServiceName]"下以服务的ServiceName建1个目录，目录中会有"ImagePath"节，这里保存的就是该服务的安装路径。

*/

/// <summary>

/// 获取服务安装路径

/// </summary>

/// <param name="ServiceName"></param>

/// <returns></returns>

public static string GetWindowsServiceInstallPath(string ServiceName)

{

string key = @"SYSTEM\CurrentControlSet\Services\" + ServiceName

string path = Registry.LocalMachine.OpenSubKey(key).GetValue("ImagePath").ToString()

//替换掉双引号

path = path.Replace("\"", string.Empty)

FileInfo fi = new FileInfo(path)

return fi.Directory.ToString()

}

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