以流的方式下载文件，隐藏实际的下载路径-优快云博客

本文介绍了一种通过流的方式下载文件，并隐藏实际下载路径的方法，使用了ASP.NET来实现。代码示例包括获取文件路径、设置HTTP响应头、写入文件内容等关键步骤。

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转自： http://dev.mjxy.cn/a-Download-the-file-to-stream-download-hide-the-real-path.aspx

以流的方式下载文件，隐藏实际的下载路径

 
    01string path = Server.MapPath("~/UploadFiles/" + "a.doc"); 

    02        System.IO.FileInfo file = new System.IO.FileInfo(path); 

    03  

    04        Response.Clear(); 

    05        Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name); 

    06  

    07        Response.AddHeader("Content-Length", file.Length.ToString()); 

    08        Response.ContentType = "application/octet-stream"; 

    09        Response.WriteFile(file.FullName); 

    10        Response.End(); 

    11  

    12public void down(string cc) 

    13  { 

    14   if (cc != "") 

    15   { 

    16  

    17    string path = System.Web.HttpContext.Current.Server.MapPath(cc); 

    18    System.IO.FileInfo file = new System.IO.FileInfo(path); 

    19    if (file.Exists) 

    20    { 

    21     System.Web.HttpContext.Current.Response.Clear(); 

    22     System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name); 

    23  

    24     System.Web.HttpContext.Current.Response.AddHeader("Content-Length", file.Length.ToString()); 

    25  

    26     System.Web.HttpContext.Current.Response.ContentType = "application/octet-stream"; 

    27  

    28     System.Web.HttpContext.Current.Response.Filter.Close(); 

    29     System.Web.HttpContext.Current.Response.WriteFile(file.FullName); 

    30     System.Web.HttpContext.Current.Response.End(); 

    31    } 

    32    else

    33    { 

    34     System.Web.HttpContext.Current.Response.Write("文件不存在"); 

    35     System.Web.HttpContext.Current.Response.End(); 

    36    } 

    37    } 

    38  }