Asp.Net Core 静态文件包含/排除规则

Question

我已经设置了静态文件和目录浏览，如下所示：

    PhysicalFileProvider physicalFileProvider = new PhysicalFileProvider(somePath, ExclusionFilters.None);
    app.UseStaticFiles(new StaticFileOptions
    {
        FileProvider = physicalFileProvider,
        RequestPath = "/files",
        ServeUnknownFileTypes = true
    }); 

    app.UseDirectoryBrowser(new DirectoryBrowserOptions
    {
        FileProvider = new PhysicalFileProvider(somePath),
        RequestPath = "/files"
    });

我一直在搜索文档并浏览对象模型，但我不知道如何设置包含和排除过滤器。我当前的代码正在过滤以

.

开头的文件（隐藏？但我在 Windows 上运行）我想显示和下载这些文件，但隐藏其他类型，例如 *.json 和 web.config。

Answer 1

这有点麻烦，但对我有用。您可以创建一个新的文件提供程序，该文件提供程序在幕后使用PhysicalFileProvider（或其他任何东西），但根据模式隐藏文件。

public class TplFileProvider : IFileProvider
{
    private readonly IFileProvider fileProvider;

    public TplFileProvider(string root)
    {
        fileProvider = new PhysicalFileProvider(root);
    }
    public TplFileProvider(string root, ExclusionFilters exclusionFilter)
    {
        fileProvider = new PhysicalFileProvider(root, exclusionFilter);
    }

    public IDirectoryContents GetDirectoryContents(string subpath)
    {
        return (IDirectoryContents) fileProvider.GetDirectoryContents(subpath).Where(i => isAllowed(i.Name));
    }

    public IFileInfo GetFileInfo(string subpath)
    {
        var file = fileProvider.GetFileInfo(subpath);
        if (isAllowed(subpath))
        {
            return file;
        }
        else
        {
            return new NotFoundFileInfo(file.Name);
        }
    }

    private static bool isAllowed(string subpath)
    {
        return subpath.EndsWith(".json") || subpath.Equals("web.config");
    }
}

编辑：这是使用文件类型白名单的更好方法：

var path = Path.GetFullPath(rawPath);

var mapping = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
    {
        { ".json", "application/json" },
        { ".jpg", "image/jpeg" },
        { ".png", "image/png" },
    };
staticFileOptions = new StaticFileOptions()
{
    RequestPath = "/StaticTiles",
    ServeUnknownFileTypes = false,
    ContentTypeProvider = new FileExtensionContentTypeProvider(mapping),
    FileProvider = new PhysicalFileProvider(path),
};
app.UseStaticFiles(staticFileOptions);