在 Azure web 应用程序设置中使用数组

Question

In my ASP.NET 5 (RC1) code I have an appsetting.json that looks something like this:

{
    "SomeSettings": {
        "PropA": "ValueA",
        "PropB": [
            "ValueB1",
            "ValueB2"
        ]
    }
}

These value are used when a run the code on my dev machine (ie. localhost). If I want to overwrite the "SomeSettings" in Azure's Application settings for the wep app, how would I specify the "PropB" array?

The SomeSettings.cs class that I want to store the information in looks like this:

public class SomeSettings
{
    public string PropA { get; set; }
    public List<string> PropB { get; set; }
}

The problem is "PropB" - how to I specify an array or List as a string in Azure - is this even possible?

In my Startup class's constructor I have:

var builder = new ConfigurationBuilder()
    .AddJsonFile("appsettings.json")
    .AddEnvironmentVariables();

And in my Startup class's Configure methods I have:

var someSettings = configuration.GetSection("SomeSettings").Get<SomeSettings>();

Answer 1

Adding the settings under "App settings" like this will do the trick... Notice the ":0" and ":1" below

Format: Key -> Value

SomeSettings:PropA -> AzureValueA
SomeSettings:PropB:0 -> AzureValueB1
SomeSettings:PropB:1 -> AzureValueB2

If you aren't running on Windows, replace the colon : with double underscore __ to get your app to see the settings. So instead of eg SomeSettings:PropA , you'd use SomeSettings__PropA .

Answer 2

In case the array value is an object (see that WriteTo value below) you can copy the entire WriteTo value, update the values if you need to and create an application setting for it as follows;

  "Serilog": {
    "WriteTo": [
      {
        "Name": "ApplicationInsights",
        "Args": {
          "restrictedToMinimumLevel": "Information",
          "telemetryConverter": "Serilog.Sinks.ApplicationInsights.Sinks.ApplicationInsights.TelemetryConverters.TraceTelemetryConverter, Serilog.Sinks.ApplicationInsights",
          "instrumentationKey": "YOUR-KEY"
        }
      },
      {
        "Name": "UmbracoFile",
        "Args": {
          "RestrictedToMinimumLevel": "Error"
        }
      },
      {
        "Name": "Async",
        "Args": {
          "configure": [
            {
              "Name": "Console"
            }
          ]
        }
      }

    ]
  }

Answer 3

Following the documentation the value should be like this:

['entry1', 'entry2', 'entry3']

https://learn.microsoft.com/en-us/azure/app-service/configure-common?tabs=portal#configure-arrays-in-app-settings

Answer 4

Simple approach is store the JSON as string in AppSetting, and de-serialize by yourself

var serializer = new JavaScriptSerializer();
var settings = serializer.Deserialize<SomeSettings>(configuration.GetSection("SomeSettings"));

or you will have to create your own customer configuration i believe. https://msdn.microsoft.com/en-us/library/2tw134k3.aspx