Question

在Startup.cs配置功能中，我这样做：

        app.UseStaticFiles(new StaticFileOptions()
        {
            FileProvider = new PhysicalFileProvider(@"\\server\somepath\someimages"),
            RequestPath = "/images"
        });

稍后，在控制器中说，我不想硬编码：

        string ImageImLookingFor = "/images" + foo.jpg;

相反，我想做类似的事情：

        string ImageImLookingFor = SomeObjectThatGivesMe.RequestPath + foo.jpg;

这可能吗？

Answer 1

不确定是否可以，但是解决方法可以是appsettings键，并可以从两个位置读取它。

例如：在您的应用设置中

{
 "ImagesPath" : '/images"
}

在Starup.cs

   app.UseStaticFiles(new StaticFileOptions()
    {
        FileProvider = new PhysicalFileProvider(@"\\server\somepath\someimages"),
        RequestPath = Configuration["ImagesPath"]
    });

在您的控制器中

    string ImageImLookingFor = configuration.RequestPath + foo.jpg;

您可以使配置文件成为强类型，并用IOptions<ImageConfiguration>替换它，其中ImageConfiguration是具有ImagesPath属性的类

Answer 2

您可以尝试将StaticFileOptions和services.Configure配置为

public class Startup
{
    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<StaticFileOptions>(options => {
            options.FileProvider = new PhysicalFileProvider(@"xxx");
            options.RequestPath = "/images";
        });
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {            
        app.UseStaticFiles(app.ApplicationServices.GetRequiredService<IOptions<StaticFileOptions>>().Value);            
    }
}

然后通过IOptions<StaticFileOptions>像

进行访问

public class HomeController : Controller
{
    private readonly StaticFileOptions _options;
    public HomeController(IOptions<StaticFileOptions> options)
    {
        this.configuration = configuration;
        _serviceProvider = serviceProvider;
        _options = options.Value;
    }
    public IActionResult Index()
    {
        return Ok(_options.RequestPath);
    }        
}

ASP.NET Core 2.2-稍后在代码中访问StaticFileOption RequestPath

2 个答案: