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我尝试为我的 ASP.NET Core 2.0 应用程序设置“dev”和“prod”环境,但它不起作用......这是我的配置:

内容appsettings.json(完全一样appsettings.Development.json

{
  "Logging": {
    "IncludeScopes": false,
    "LogLevel": { "Default": "Warning" }
  },
  "ConnectionStrings": {
    "MyAppContext":     
      "...AccountName=MyApptables4dev; AccountKey=xxxxxx==;EndpointSuffix=core.windows.net"
  },
  "Authentication": {
    "AzureAd": {
      "AADInstance": "https://login.microsoftonline.com/",
      "CallbackPath": "/signin-oidc",
      "ClientId": "xxxxxxx",
      "Domain": "MyAppapp-dev.azurewebsites.net",
      "TenantId": "yyyyyyy"
    }
  }
}

仅用于appsettings.Production.json连接字符串和域名更改:

"MyAppContext":"...AccountName=MyApptables4dev;AccountKey=yyyyyy==;EndpointSuffix=core..."

"Domain": "MyAppapp.azurewebsites.net",

Startup.cs:_

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, reloadOnChange: true);

    if (env.IsDevelopment())
    {
        builder = builder.AddUserSecrets<Startup>();
    }

    builder.AddEnvironmentVariables();
    Configuration = builder.Build();
}

public void ConfigureServices(IServiceCollection services)
{
    // Adds services required for using options.
    services.AddOptions();

    // Register the IConfiguration instance which "ConnectionStrings" binds against.
    //services.Configure<ConnectionStrings>(Configuration.GetSection("ConnectionStrings"));
    services.Configure<AppSecrets>(Configuration);
    services.AddSingleton<ITableRepositories, TableClientOperationsService>();
    // ...

secrets.json位于用户文件夹中)内容

{
  "MyAppTablesConnectionString": "DefaultEndpointsProtocol=https;AccountName=myapptables4dev;AccountKey=xxx==;EndpointSuffix=core.windows.net"
}

最后是访问数据库的类(在我的例子中是 AzureTables)

public class TableClientOperationsService : ITableRepositories
{
    // ... 

    public TableClientOperationsService() { }
    public TableClientOperationsService(IOptions<AppSecrets> optionsAccessor)
    {
        tables = new Dictionary<string, CloudTable>();            
        // 'null' in 'prod'!
        connectionString = optionsAccessor.Value.MyAppTablesConnectionString; 
    }

知道MyAppTablesConnectionString“生产”中的“空”,也许问题来自那里,但我不知道如何使它与连接字符串MyAppContextMyAppTablesConnectionString连接字符串一起工作......

4

1 回答 1

1

因此,您的代码从设置中读取值MyAppTablesConnectionString

connectionString = optionsAccessor.Value.MyAppTablesConnectionString; 

但根据提供的信息,只有 dev env 具有此设置(通过 secret.json 定义并由 读取builder = builder.AddUserSecrets<Startup>();)。

所以是的,生产环境得到了null,因为该设置未在任何配置源中定义:

  • 用户密码不与 prod 一起使用
  • appsettings文件没有描述MyAppTablesConnectionString
  • 并且您不会通过 env 变量传递此值。
于 2017-10-11T10:40:55.193 回答