ASP。使用IConfiguration获取Json数组

在appsettings.json

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

在Startup.cs

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

在HomeController

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

上面是我的代码。结果是零。如何获取数组?

当前回答

您可以安装以下两个NuGet包:

using Microsoft.Extensions.Configuration; 
using Microsoft.Extensions.Configuration.Binder;

然后你将有可能使用以下扩展方法:

var myArray = _config.GetSection("MyArray").Get<string[]>();

2017-10-03 09:48:05

其他回答

对于从配置返回复杂JSON对象数组的情况，我调整了@djangojazz的答案，以使用匿名类型和动态而不是元组。

给定的设置部分:

"TestUsers": [
{
  "UserName": "TestUser",
  "Email": "Test@place.com",
  "Password": "P@ssw0rd!"
},
{
  "UserName": "TestUser2",
  "Email": "Test2@place.com",
  "Password": "P@ssw0rd!"
}],

你可以这样返回对象数组:

public dynamic GetTestUsers()
{
    var testUsers = Configuration.GetSection("TestUsers")
                    .GetChildren()
                    .ToList()
                    .Select(x => new {
                        UserName = x.GetValue<string>("UserName"),
                        Email = x.GetValue<string>("Email"),
                        Password = x.GetValue<string>("Password")
                    });

    return new { Data = testUsers };
}

2018-10-30 14:24:00

你可以直接获得数组，而不需要在配置中增加一个新的级别:

public void ConfigureServices(IServiceCollection services) {
    services.Configure<List<String>>(Configuration.GetSection("MyArray"));
    //...
}

2017-08-04 10:53:35

.Net Core 7.x中处理对象的不同方法

在appsettings.json:

{
      "People": [
          { "FirstName": "Glen", "LastName": "Johnson", "Age": 30 },
          { "FirstName": "Matt", "LastName": "Smith", "Age": 40 },
          { "FirstName": "Fred", "LastName": "Williams", "Age": 50 }
      ]
}

Person类:

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public int Age { get; set; }
}

在代码中:

var appConfig = App.Current.AppConfiguration;   // Or could be passed in through DI
var children = appConfig.GetSection("People")
    .GetChildren()
    .ToList();

var people = new List<Person>();
foreach (var child in children)
{
    var rec = new Person
    {
        FirstName = appConfig[$"{child.Path}:FirstName"],
        LastName = appConfig[$"{child.Path}:LastName"],
        Age = int.Parse(appConfig[$"{child.Path}:Age"]),
    };
    people.Add(rec);
}

2023-01-27 21:48:34

这为我工作，从我的配置返回一个字符串数组:

var allowedMethods = Configuration.GetSection("AppSettings:CORS-Settings:Allow-Methods")
    .Get<string[]>();

我的配置部分是这样的:

"AppSettings": {
    "CORS-Settings": {
        "Allow-Origins": [ "http://localhost:8000" ],
        "Allow-Methods": [ "OPTIONS","GET","HEAD","POST","PUT","DELETE" ]
    }
}

2018-12-29 18:16:13

在ASP。NET Core 2.2及以后版本，我们可以在应用程序的任何地方注入IConfiguration 就像在你的例子中，你可以在HomeController中注入IConfiguration并像这样使用来获取数组。

string[] array = _config.GetSection("MyArray").Get<string[]>();

2019-08-01 20:42:04

ASP。使用IConfiguration获取Json数组

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