Why is the above code unable to correctly retrieve EmailSettingNames.DefaultFromAddress? #10069

4 Answer(s)

• 

  0

  AI-Bot created 2 months ago

  Support Team ABP Agent

  1. Solution

  • Root cause: You created a minimal app with only AbpEmailingModule. The setting system throws “Undefined setting: Abp.Mailing.DefaultFromAddress” because the Email settings are defined by the Emailing module but are registered through module initialization and typically read from configuration/setting stores. In a console app created this way, you must:

    • Ensure the Emailing module is added and initialized.
    • Provide values for the email settings via appsettings.json (Settings section) or a setting store before you try to read them.
    • Make sure the virtual file system and configuration are available to the module.

  • Fix (recommended simple approach): Add an appsettings.json next to your console app and load it when creating the application so ABP’s configuration system can populate settings.

  using Microsoft.Extensions.Configuration;
    using Volo.Abp;
    using Volo.Abp.Emailing;
    using Volo.Abp.Settings;
  
    internal class Program
    {
        private static async Task Main(string[] args)
        {
            // Build configuration that includes appsettings.json
            var configuration = new ConfigurationBuilder()
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: false)
                .AddEnvironmentVariables()
                .Build();
  
            // Create Abp application with the configuration
            using var app = await AbpApplicationFactory.CreateAsync<AbpEmailingModule>(options =>
            {
                options.Services.ReplaceConfiguration(configuration);
            });
  
            await app.InitializeAsync();
  
            var settingProvider = app.ServiceProvider.GetRequiredService<ISettingProvider>();
  
            // Now this will work if setting exists in config or store
            var from = await settingProvider.GetOrNullAsync(EmailSettingNames.DefaultFromAddress);
            Console.WriteLine(from ?? "No value found");
        }
    }
  

  appsettings.json:

  {
      "Settings": {
        "Abp.Mailing.DefaultFromAddress": "noreply@yourapp.com",
        "Abp.Mailing.DefaultFromDisplayName": "Your App",
        "Abp.Mailing.Smtp.Host": "127.0.0.1",
        "Abp.Mailing.Smtp.Port": "25",
        "Abp.Mailing.Smtp.UseDefaultCredentials": "true"
      }
    }
  

  • Alternative: Set the setting programmatically before reading it (e.g., when you don’t want to use configuration). Note: Password must be stored encrypted normally; shown here for the DefaultFromAddress only:

  var settingManager = app.ServiceProvider.GetRequiredService<ISettingManager>();
    await settingManager.SetGlobalAsync(EmailSettingNames.DefaultFromAddress, "noreply@yourapp.com");
  
    var from2 = await settingProvider.GetOrNullAsync(EmailSettingNames.DefaultFromAddress);
  

  • Notes:
    • If you also need to manage settings via database UI, include Setting Management modules in a real app. For a console-only test, configuration or programmatic set is sufficient.
    • Ensure you are referencing Volo.Abp.Emailing and that AbpEmailingModule is included (you already do).
    • The error “Undefined setting” means the setting definition wasn’t available to the SettingDefinitionManager at the time of resolution or no configuration was provided; wiring configuration as shown resolves it.

  2. Sources

  • https://docs.abp.io/en/abp/latest/Emailing
  • https://docs.abp.io/en/abp/latest/Settings
  • https://github.com/abpframework/abp/blob/dev/framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/EmailSettingNames.cs

  ---

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• 

  0

  maliming created 2 months ago

  Support Team Fullstack Developer

  hi

  Can you add the AutoFac module dependency?

  https://abp.io/docs/latest/framework/fundamentals/autofac-integration

  Thanks.

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• 

  0

  rexhxiao created 2 months ago

  That is a built-in module in ABP. I think I found the reason. You must execute:

  options.UseAutofac();

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• 

  0

  maliming created 2 months ago

  Support Team Fullstack Developer

  Yes, AutoFac will support more advanced features.

  Thanks.

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