.Net Core 配置文件读取IOptions,IOptionsMonitor,IOptionsSnapshot

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "Demo": {
    "Value1": "1",
    "Value2": "2",
    "Value3": "3",
    "Value4": "4"
  }
}

private readonly IConfiguration _configuration;

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

var section = _configuration.GetSection("Demo");
var value1 = section.GetValue("Value1", "1");

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "Demo": {
    "Value1": "1",
    "Value2": "2",
    "Value3": "3",
    "Value4": "4",
    "Model" {
      "Name": "小二",
      "Phone": "12345678911"
    }
  }
}

var model = _configuration.GetSection("Demo:Model");

var options = new DemoOptions();
_configuration.GetSection("Demo").Bind(options);

var options2 = _configuration.GetSection("Demo").Get<DemoOptions>();

builder.Services.Configure<DemoOptions>(builder.Configuration.GetSection("Demo"));

private readonly DemoOptions _demoOptions;
public ValuesController(IOptions<DemoOptions> options)
{
    _demoOptions = options.Value;
}