.NET Core控制檯應用程序，如何爲每個環境配置appSettings？

Question

我有一個.NET核心1.0.0控制檯應用程序和兩個環境。基於我在運行時設置的環境變量，我需要能夠使用appSettings.dev.json和appSettings.test.json。對於ASP.NET Core Web應用程序，這似乎是非常直接的，通過依賴注入和IHostingEnvironment以及EnvironmentName env。變量，但是我應該如何爲控制檯應用程序進行連接（除了編寫使用Microsoft.Framework.Configuration.EnvironmentVariables的自定義代碼之外）？

謝謝。

Answer 1

這就是我們在我們的.netcore控制檯應用程序中所做的。這裏的關鍵在於，（，請根據您的需求可能不是全部）依賴你的項目即權和複製到輸出appSetting.json爲您buildoptions的一部分

{ 
     "Microsoft.Extensions.Configuration": "1.0.0", 
     "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0", 
     "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0", 
     "Microsoft.Extensions.Configuration.Json": "1.0.0", 
    } 
    "buildOptions": { 
    "emitEntryPoint": true, 
    "copyToOutput": { 
     "include": [ 
     "appsettings*.json", 
     "App*.config" 
       ] 
      } 
}, 

    using Microsoft.Extensions.Configuration; 
    namespace MyApp 
    { 
    public static void Main(string[] args) 
    { 
     var environmentName = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT"); 


     var builder = new ConfigurationBuilder() 
      .AddJsonFile($"appsettings.json", true, true) 
      .AddJsonFile($"appsettings.{environmentName}.json", true, true) 
      .AddEnvironmentVariables(); 
     Configuration = builder.Build(); 
     var myConnString= Configuration.GetConnectionString("SQLConn"); 
    } 

}

Answer 2

您可以ASP.Net核心環境變量做到這一點（ASPNETCORE_ENVIRONMENT）： -

using Microsoft.AspNetCore.Hosting; 
using System; 

public class Program { 
    private static string HostingEnvironment => Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT"); 
    private static bool IsEnvironment(string environmentName) => HostingEnvironment?.ToLower() == environmentName?.ToLower() && null != environmentName; 

    private static bool Development => IsEnvironment(EnvironmentName.Development); 
    private static bool Production => IsEnvironment(EnvironmentName.Production); 
    private static bool Staging => IsEnvironment(EnvironmentName.Staging); 

    public static void Main(string[] args) { // Your code here } 
} 

然後你可以簡單地使用屬性

public static void Main(string[] args) { 
     if (Development){ 
      // Blow up the planet 
     } 
    }