.Net Core 2.1不读取用户秘密

Question

I am running a .net core 2.1 application on a mac and I am trying to access my connections string which should be overridden by my user secrets. The .csproj file includes a guid

<UserSecretsId>{{Secret Guid}}</UserSecretsId>

Add the user secret keys

dotnet user-secrets set "ConnectionStrings:DefaultConnection" "Secret Connection String"

I create the configuration which reads from my appsettings.json file perfectly however it does not replaces the default values with the ones from my user secrets.

// this is done so I build my configurations in a class library
var assembly = AppDomain.CurrentDomain.GetAssemblies()
    .Single(o => o.EntryPoint != null);

var configurationBuilder = new ConfigurationBuilder()
    .AddEnvironmentVariables()
    // .AddUserSecrets<Program>() -> This does not work either
    .AddUserSecrets(assembly, optional: false);

configurationBuilder.SetBasePath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));
configurationBuilder.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
var configuration = configurationBuilder.Build();

Console.WriteLine(configuration["ConnectionStrings:DefaultConnection"]);

As I stated previously trying to access the values it does not replace the values with the user secrets values. Please let me know what I am missing.

Answer 1

The order you add configuration sources to your ConfigurationBuilder is important - those added later override those added earlier. In your example, you're calling AddUserSecrets before AddJsonFile , which results in your JSON file values overriding your user secrets values.

For the sake of completeness, here's a fixed version:

var configurationBuilder = new ConfigurationBuilder()
    .AddEnvironmentVariables();

configurationBuilder.SetBasePath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));
configurationBuilder.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);

// configurationBuilder.AddUserSecrets<Program>(); -> This does not work either
configurationBuilder.AddUserSecrets(assembly, optional: false);

In light of this, you might also want to move the AddEnvironmentVariables call to run later in the configuration setup.