ASP.NET Core 如何确定 MIME 类型并应用不同的中间件? [英] How does ASP.NET Core determine MIME types and apply different middleware?

问题描述

我使用 ASP.NET Core MVC 和 .NET Core 2.0.

I use ASP.NET Core MVC and .NET Core 2.0.

我有一些静态文件，它们有不同的文件类型，JPEG、PNG、BMP ...

I have some static files, they have different file types, JPEG, PNG, BMP ...

我想根据不同的文件类型应用不同的中间件.

I would like to apply different middleware according to different file types.

比如PNG文件我会用ImageCompressMiddleware，BMP文件我会用ImageConvertMiddleware.

Such as PNG file I will use ImageCompressMiddleware, BMP file I will use ImageConvertMiddleware.

ASP.NET Core 如何确定 MIME 类型并应用不同的中间件?

How does ASP.NET Core determine MIME types and apply different middleware?

或者根据文件扩展名.

推荐答案

在 configure 部分创建一个 FileExtensionContentTypeProvider 对象，并为每个 MIME Type 填充或移除 Mapping 如下:

Create a FileExtensionContentTypeProvider object in configure section and fill or remove Mapping for each MIME Type as follows:

public void Configure(IApplicationBuilder app)
{
    // Set up custom content types -associating file extension to MIME type
    var provider = new FileExtensionContentTypeProvider();
    // Add new mappings
    provider.Mappings[".myapp"] = "application/x-msdownload";
    provider.Mappings[".htm3"] = "text/html";
    provider.Mappings[".image"] = "image/png";
    // Replace an existing mapping
    provider.Mappings[".rtf"] = "application/x-msdownload";
    // Remove MP4 videos.
    provider.Mappings.Remove(".mp4");

    app.UseStaticFiles(new StaticFileOptions()
    {
        FileProvider = new PhysicalFileProvider(
            Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot", "images")),
        RequestPath = new PathString("/MyImages"),
        ContentTypeProvider = provider
    });
    .
    .
    .
}

转到此链接了解更多信息:微软

Go to this link for more information: microsoft

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