ASP.NET Core使用IConfiguration获取Json数组

本文介绍了ASP.NET Core使用IConfiguration获取Json数组的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在appsettings.json中

In appsettings.json

{ "MyArray": [ "str1", "str2", "str3" ] }

在Startup.cs

In Startup.cs

public void ConfigureServices(IServiceCollection services) { services.AddSingleton<IConfiguration>(Configuration); }

在HomeController中

In HomeController

public class HomeController : Controller { private readonly IConfiguration _config; public HomeController(IConfiguration config) { this._config = config; } public IActionResult Index() { return Json(_config.GetSection("MyArray")); } }

上面有我的代码，我为空 如何获得数组?

There are my codes above, I got null How to get the array?

推荐答案

如果要选择第一项的值，则应该这样做-

If you want to pick value of first item then you should do like this-

var item0 = _config.GetSection("MyArray:0");

如果要选择整个数组的值，则应该这样做-

If you want to pick value of entire array then you should do like this-

IConfigurationSection myArraySection = _config.GetSection("MyArray"); var itemArray = myArraySection.AsEnumerable();

理想情况下，您应该考虑使用选项文件，由官方文档建议.这将为您带来更多好处.

Ideally, you should consider using options pattern suggested by official documentation. This will give you more benefits.