Question

我有一个带有appsetting.json文件的AspnetCore项目：

{
   "Logging": {
      "IncludeScopes": false,
      "LogLevel": {
        "Default": "Warning"
      }
    },
   "ConectionStrings": {
     "DB": "Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=test;Data Source=ENIAC"
   }
}

现在我得到此设置，并使用以下代码将其注入到控制器中：

public Startup(IHostingEnvironment env)
{
    var builder = new ConfigurationBuilder()
        .SetBasePath(env.ContentRootPath)
        .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
        .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
        .AddEnvironmentVariables();
    Configuration = builder.Build();
}

public IConfigurationRoot Configuration { get; }

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc();
    services.AddSingleton<IConfiguration>(Configuration);
}

并且在我的控制器中，我尝试使用以下代码访问连接字符串：

public HomeController(IConfiguration _config) {
    config = _config;
    var t = config.GetConnectionString("DB");
    Debug.WriteLine(t);
}

但是t现在为空。

我的错误在哪里？我该如何解决这个问题？

Answer 1

您的appsettings.json文件中有一个错字：ConectionStrings应该是ConnectionStrings。

如何从注入到ASP网络核心中的控制器的IConfiguration访问ConnectionString？

1 个答案: