Windows 注册表中的 Mime 类型
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Mime Types in the windows registry
提问by acadia
In my windows service built with C# I am trying to set the mime types based on the file extensions as shown below
在我用 C# 构建的 Windows 服务中，我试图根据文件扩展名设置 mime 类型，如下所示
static string GetMimeType(string fileName)
{
string mimeType = "application/unknown";
string ext = Path.GetExtension(fileName).ToLower();
Microsoft.Win32.RegistryKey regKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey(ext);
if (regKey != null && regKey.GetValue("Content Type") != null)
mimeType = regKey.GetValue("Content Type").ToString();
return mimeType;
}
On the production server we don't have Acrobat or word installed for obvious reasons. How do I get around with this? Is there any other way of setting the mime types? If not how do I create those mime types on the production server without having to install those softwares.
在生产服务器上，由于显而易见的原因，我们没有安装 Acrobat 或 word。我该如何解决这个问题？有没有其他方法可以设置 mime 类型？如果不是，我如何在生产服务器上创建这些 mime 类型而不必安装这些软件。
Thanks in advance
提前致谢
回答by Rup
You can simply create the registry entries for those types for your code to read
您可以简单地为这些类型创建注册表项以供您的代码读取
- in regedit go to HKEY_LOCAL_MACHINE\Software\Classes (the central part of HKCR)
- right click Classes, New Key - call it .pdf
- right click on the right hand side, New String - "Content Type", "application/pdf"
- 在 regedit 中转到 HKEY_LOCAL_MACHINE\Software\Classes（HKCR 的中心部分）
- 右键单击类，新键 - 称之为 .pdf
- 右键单击右侧，新字符串 - “内容类型”，“应用程序/pdf”
or you can find a machine that does have Acrobat installed and then use regedit to export the .pdf key to a registry script you can import on your server. You'll end up with lots of scripts: you can use notepad to edit them together but make sure you don't change the encoding when you save - it has to be Unicode!
或者您可以找到一台安装了 Acrobat 的机器，然后使用 regedit 将 .pdf 密钥导出到您可以在您的服务器上导入的注册表脚本。您最终会得到很多脚本：您可以使用记事本将它们一起编辑，但请确保在保存时不要更改编码 - 它必须是 Unicode！
You could equally add a list of mappings into your application but IIS won't serve static content when it doesn't have a content type so you should probably add them to your registry too in case you ever need to serve static PDFs.
您同样可以将映射列表添加到您的应用程序中，但是当 IIS 没有内容类型时，它不会提供静态内容，因此您可能也应该将它们添加到您的注册表中，以防您需要提供静态 PDF。
