71 lines
2.2 KiB
C#
71 lines
2.2 KiB
C#
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using System;
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using System.IO;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.FileProviders;
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using Microsoft.Extensions.Hosting;
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namespace ETFileServer
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{
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public class Startup
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{
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private IConfiguration Configuration { get; }
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public Startup(IConfiguration configuration)
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{
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Configuration = configuration;
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}
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public void ConfigureServices(IServiceCollection services)
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{
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services.AddControllers();
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// 1. 从配置中获取文件根目录路径
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string fileRootPath = Configuration["DirectoryPath"];
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if (string.IsNullOrEmpty(fileRootPath))
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{
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throw new InvalidOperationException("DirectoryPath is not configured in appsettings.json.");
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}
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// 2. 解析为绝对路径
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string fullPath = Path.GetFullPath(fileRootPath);
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if (!Directory.Exists(fullPath))
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{
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// 在启动时检查目录是否存在，如果不存在则创建
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Directory.CreateDirectory(fullPath);
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Console.WriteLine($"Warning: Root directory not found. Created directory at: {fullPath}");
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}
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// 3. 创建并注册一个 PhysicalFileProvider 作为单例服务
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// 这样整个应用都可以安全地使用它来访问文件
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var provider = new PhysicalFileProvider(fullPath);
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services.AddSingleton<IFileProvider>(provider);
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}
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public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
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{
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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app.UseRouting();
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app.UseEndpoints(endpoints =>
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{
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endpoints.MapControllers();
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});
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// 对于任何未匹配到Controller的请求，直接返回404 Not Found
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app.Run(context =>
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{
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context.Response.StatusCode = 404;
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return Task.CompletedTask;
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});
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}
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}
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}
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