Dan*_*end 5 c# asp.net-core asp.net-core-configuration
我无法让我Configuration.GetSection返回.Value. 我想我实施了这个问题的所有建议,但仍然无法让它发挥作用。
appsettings.json
{
"AmazonSettings": {
"BaseUrl": "https://testing.com",
"ClientID": "123456",
"ResponseType": "code",
"RedirectUri": "https://localhost:44303/FirstTimeWelcome"
},
}
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启动:
public IConfiguration Configuration { get; }
public Startup(IHostingEnvironment env)
{
//Set up configuration sources.
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json")
.AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
.AddEnvironmentVariables();
Configuration = builder.Build();
}
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配置服务:
public void ConfigureServices(IServiceCollection services)
{
services.AddOptions();
services.Configure<AmazonSettings>(Configuration.GetSection("AmazonSettings"));
services.AddMvc()
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AmazonSettings 类:
public class AmazonSettings
{
public string BaseUrl { get; set; }
public string ClientID { get; set; }
public string RedirectUri { get; set; }
public string ResponseType { get; set; }
}
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我正在尝试通过 IOptions 访问 AmazonSettings.Value:
public class HomeController : Controller
{
private readonly AmazonSettings _amazonSettings;
public IActionResult Index()
{
ViewBag.LoginUrl = _amazonSettings.BaseUrl;
return View("/Pages/Index.cshtml"); ;
}
public HomeController(IOptions<AmazonSettings> amazonSettings)
{
_amazonSettings = amazonSettings.Value;
}
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当我调试时,值为空:
我的问题是我在 HomeController 中的代码从未被命中。
如果我在控制器上方添加 Routes["home"] 并导航到 localhost/home,我就可以到达那里,并且 .Value 已填充。但是,我无法使用 Routes[""],因为我使用的是 Razor 页面,这导致了 ambigeousActionException。
然后我意识到我根本不需要在 Razor Pages 中使用控制器。我可以直接从 Index.cshtml.cs 访问我的数据
public class IndexModel : PageModel
private readonly AmazonSettings _amazonSettings;
public string LoginUrl;
public IndexModel(IOptions<AmazonSettings> amazonSettings)
{
_amazonSettings = amazonSettings.Value;
}
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在我的 Index.cshtml 页面中进行以下访问:
<a href=@Model.LoginUrl><h1>@Model.LoginUrl</h1></a>
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事实证明,在调试时,启动代码中 GetSection 返回的 .Value 可能为 null,但在到达 IndexModel 时它会被填充。
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