在 Azure Function 應用程序設置中使用數組

Question

I'm using appsettings.json for the configuration of my Azure Function (netcoreapp3.1, running on a Windows machine).

在appsettings.json文件中有一個帶有設置的數組：

{
    "ArraySettings": [
        {
            "ArraySettingProperty1": "ArraySetting1Value1",
            "ArraySettingProperty2": "ArraySetting1Property2"
        },
        {
            "ArraySettingProperty1": "ArraySetting2Value1",
            "ArraySettingProperty2": "ArraySetting2Property2"
        }
    ],
    "SingleSetting": "SingleValue"
}

如果我在本地運行 Azure Function 它工作正常。 But it seems not to work on Azure although the appsettings.json file was deployt and can be found by the Azure Function.

在Startup.cs中：

private IConfiguration InitializeConfiguration(IFunctionsHostBuilder functionsHostBuilder)
        {
            ExecutionContextOptions executionContextOptions = functionsHostBuilder
               .Services
               .BuildServiceProvider()
               .GetService<IOptions<ExecutionContextOptions>>()
               .Value;

            return new ConfigurationBuilder()
                .SetBasePath(executionContextOptions.AppDirectory)
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables()
                .Build();
        }

這是我已經嘗試過的（沒有成功）：

1. 將設置復制到local.settings.json文件的Values部分

2. 以以下密鑰格式將設置添加到 Azure 上的應用程序設置（無論是否注釋掉appsettings.json配置）：

   2.1 ArraySettings:ArraySettingProperty1:0

   2.2 ArraySettings__ArraySettingsProperty1__0

   2.3 值__ArraySettings__ArraySettingsProperty1__0

為什么陣列設置在本地有效，但在 Azure 上無效？ 我怎樣才能讓它們在 Azure 上工作？ 謝謝！

Answer 1

請嘗試在您的應用服務的配置設置中進行如下設置：

Key: ArraySettings__0__ArraySettingProperty1

Value: ArraySetting1Value1

Key: ArraySettings__0__ArraySettingProperty2

Value: ArraySetting1Value2

Key: ArraySettings__1__ArraySettingProperty1

Value: ArraySetting1Value1

Key: ArraySettings__1__ArraySettingProperty2

Value: ArraySetting1Value2

Key: SingleSetting

Value: SingleValue

如果您的應用服務部署在 Windows 上，您可以使用:作為分隔符而不是__ 。 但是__適用於 Windows 和 Linux。

Answer 2

這有效：

public class MyOptions
{
      public List<string> MyArray { get; set; }
}

// local.settings.json:
{
  "IsEncrypted": false,
  "Values": {
    "MyOptions:MyArray:0": "foo",
    "MyOptions:MyArray:1": "bar"
  }
}

// In startup.cs:
builder.Services.Configure<MyOptions>(configuration.GetSection("MyOptions"));