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?
这对我很管用;
创建json文件:
{
"keyGroups": [
{
"Name": "group1",
"keys": [
"user3",
"user4"
]
},
{
"Name": "feature2And3",
"keys": [
"user3",
"user4"
]
},
{
"Name": "feature5Group",
"keys": [
"user5"
]
}
]
}
然后，定义一些映射类:
public class KeyGroup
{
public string name { get; set; }
public List<String> keys { get; set; }
}
nuget packages:
Microsoft.Extentions.Configuration.Binder 3.1.3
Microsoft.Extentions.Configuration 3.1.3
Microsoft.Extentions.Configuration.json 3.1.3
然后加载它:
using Microsoft.Extensions.Configuration;
using System.Linq;
using System.Collections.Generic;
ConfigurationBuilder configurationBuilder = new ConfigurationBuilder();
configurationBuilder.AddJsonFile("keygroup.json", optional: true, reloadOnChange: true);
IConfigurationRoot config = configurationBuilder.Build();
var sectionKeyGroups =
config.GetSection("keyGroups");
List<KeyGroup> keyGroups =
sectionKeyGroups.Get<List<KeyGroup>>();
Dictionary<String, KeyGroup> dict =
keyGroups = keyGroups.ToDictionary(kg => kg.name, kg => kg);
appsettings.json:
"MySetting": {
"MyValues": [
"C#",
"ASP.NET",
"SQL"
]
},
我的设置类：
namespace AspNetCore.API.Models
{
public class MySetting : IMySetting
{
public string[] MyValues { get; set; }
}
public interface IMySetting
{
string[] MyValues { get; set; }
}
}
Startup.cs
public void ConfigureServices(IServiceCollection services)
{
...
services.Configure<MySetting>(Configuration.GetSection(nameof(MySetting)));
services.AddSingleton<IMySetting>(sp => sp.GetRequiredService<IOptions<MySetting>>().Value);
...
}
Controller.cs
public class DynamicController : ControllerBase
{
private readonly IMySetting _mySetting;
public DynamicController(IMySetting mySetting)
{
this._mySetting = mySetting;
}
}
访问值:
var myValues = this._mySetting.MyValues;
灯塔3.1
Json配置:
"TestUsers":
{
"User": [
{
"UserName": "TestUser",
"Email": "Test@place.com",
"Password": "P@ssw0rd!"
},
{
"UserName": "TestUser2",
"Email": "Test2@place.com",
"Password": "P@ssw0rd!"
}]
}
然后创建一个User.cs类，它具有与上面Json配置中的User对象对应的auto属性。然后你可以引用Microsoft.Extensions.Configuration.Abstractions并执行以下操作:
List<User> myTestUsers = Config.GetSection("TestUsers").GetSection("User").Get<List<User>>();
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 };
}
.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);
}
