.NET 7.0生产环境抛出FileNotFoundException问题求助

云原生阿岚

2026-7-5

.NET 7.0项目生产环境发布后抛出System.IO.FileNotFoundException

我有一个.NET 7.0项目，开发环境运行正常，但发布到生产环境后出现未处理异常：

Unhandled Exception: System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

已尝试以下操作但未解决问题：

确认发布包完整，发布流程无错误
在生产服务器安装了对应版本的ASP.NET Core SDK

该项目此前在同一服务器发布运行正常，本次问题是代码变更后出现的。

项目Program.cs代码

Log.Logger = new LoggerConfiguration()
                       .Enrich.FromLogContext()
                       .CreateLogger();

try
{
    var builder = WebApplication.CreateBuilder(args);
    builder.Host.UseSerilog().ConfigureLogging(logging =>
    {
        logging.ClearProviders();
        logging.SetMinimumLevel(LogLevel.Trace);
    });

    var configuration = builder.Configuration;
    Log.Logger = new LoggerConfiguration().ReadFrom.Configuration(configuration).CreateLogger();

    var connectionString = configuration.GetConnectionString("AfgAzadUnConnection");

    builder.Services.Configure(connectionString);

    var app = builder.Build();

    if (!app.Environment.IsDevelopment())
    {
         app.UseExceptionHandler("/Error");
         app.UseHsts();
    }

    app.UseHttpsRedirection();
    app.UseStaticFiles();

    app.UseRouting();
    app.UseRequestLocalization("en");
    app.UseSetVisitorId();
    app.UseAuthentication();
    app.UseCookiePolicy();
    app.UseAuthorization();
    app.MapRazorPages();
    app.MapHub<OnlineVisitorHub>("/chathub");

    app.Run();
}
catch (Exception ex)
{
    Log.Fatal(ex, "اجرای اپلیکشن با خطا  مواجه شد.");
}
finally
{
    Log.CloseAndFlush();
}