/// <summary>
/// 下载文件的具体方法
/// </summary>
/// <returns>成功则为true，失败异常则为false</returns>
public ActionResult DownLoadFile(string path, string fileName)
{
//path = Server.MapPath(path);
string msg = "";
if (!System.IO.File.Exists(path))
{
var model = design_ProjectDrawingsBLL.GetModel(p => p.存储路径 == path);
model.备注 = "false";
try
{
design_ProjectDrawingsBLL.Modify(model);
}
catch (Exception e)
{
return(Content(e.Message));
}
msg = "<script>alert('文件下载失败！');parent.location.href='Index';</script>";
return(Content(msg));
}
FileStream fs = new FileStream(path, FileMode.Open);
byte[] bytes = new byte[(int)fs.Length];
fs.Read(bytes, 0, bytes.Length);
fs.Close();
FileInfo fi = new FileInfo(path);
//**********处理可以解决文件类型问题
string fileextname = fi.Extension;
string DEFAULT_CONTENT_TYPE = "application/unknown";
RegistryKey regkey, fileextkey;
string filecontenttype;
try
{
regkey = Registry.ClassesRoot;
fileextkey = regkey.OpenSubKey(fileextname);
filecontenttype = fileextkey.GetValue("Content Type", DEFAULT_CONTENT_TYPE).ToString();
}
catch
{
filecontenttype = DEFAULT_CONTENT_TYPE;
}
//**********end
Response.Charset = "UTF-8";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
Response.ContentType = filecontenttype;
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);//设置文件信息
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();
return(new EmptyResult());
}
