在asp dot net 3.1中无法从appsettings.json中读取字符串数组

{
  "MyArray": ["value1", "value2", "value3"]
}

using Microsoft.Extensions.Configuration;

public void ConfigureServices(IServiceCollection services)
{
    // 加载appsettings.json文件
    var configuration = new ConfigurationBuilder()
        .SetBasePath(Directory.GetCurrentDirectory())
        .AddJsonFile("appsettings.json")
        .Build();

    services.AddSingleton(configuration);
}

public class MyService
{
    private readonly IConfiguration _configuration;

    public MyService(IConfiguration configuration)
    {
        _configuration = configuration;
    }

    public void DoSomething()
    {
        // 读取MyArray配置项的值
        var myArray = _configuration.GetSection("MyArray").Get<string[]>();

        // 使用字符串数组进行操作
        // ...
    }
}