NETCORE 使用中间件做文件服务器

创建net6 webapi 项目

创建中间件类 StaticRequestMiddleware

    public class StaticRequestMiddleware
    {
        public static string RootPath { get; set; }

        private readonly RequestDelegate _next;

        private readonly IConfiguration _configuration;

        public StaticRequestMiddleware(RequestDelegate next, IConfiguration configuration)
        {
            _next = next;
            _configuration = configuration;

            RootPath = _configuration.GetSection("PathTiles").Value;
        }
        public async Task Invoke(HttpContext context)
        {
            var pathExpand = context.Request.Path.Value;

            var path = RootPath + pathExpand;

            var responseOriginalBody = context.Response.Body;
            var memStream = new MemoryStream();
            context.Response.Body = memStream;

            //await _next(context);
            context.Response.StatusCode = 200;

            var buffer = FileTools.GetFileStream(path);

            memStream.WriteAsync(buffer, 0, buffer.Length);

            memStream.Position = 0;

            await memStream.CopyToAsync(responseOriginalBody);

            context.Response.Body = responseOriginalBody;
        }
    }

配置文件

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  //"PathTiles": "C:\\TilesPublishServer",
  "PathTiles": "C:\\Users\\12850\\Desktop",
  "AllowedHosts": "*"
}

注入中间件 Program.cs

app.UseMiddleware<StaticRequestMiddleware>();

访问：https://localhost:7179/1.txt

开启GZIP与Br的压缩

在 Program.cs

builder.Services.Configure<BrotliCompressionProviderOptions>(options =>
{
    options.Level = CompressionLevel.Optimal;
});


builder.Services.Configure<GzipCompressionProviderOptions>(options =>
{
    options.Level = CompressionLevel.Optimal;
});
builder.Services.AddResponseCompression(options =>
{
    options.EnableForHttps = true;
    // 添加br与gzip的Provider
    options.Providers.Add<BrotliCompressionProvider>();
    options.Providers.Add<GzipCompressionProvider>();
    // 扩展一些类型 (MimeTypes中有一些基本的类型,可以打断点看看)
    options.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(new[]
    {
        "text/html; charset=utf-8",
        "application/xhtml+xml",
        "application/atom+xml",
        "image/svg+xml"
    });
});