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?
在应用程序设置中添加一个级别。json:
{
"MySettings": {
"MyArray": [
"str1",
"str2",
"str3"
]
}
}
创建一个代表你的section的类:
public class MySettings
{
public List<string> MyArray {get; set;}
}
在你的应用启动类中,绑定你的模型并将其注入到DI服务中:
services.Configure<MySettings>(options => Configuration.GetSection("MySettings").Bind(options));
在你的控制器中,从DI服务中获取配置数据:
public class HomeController : Controller
{
private readonly List<string> _myArray;
public HomeController(IOptions<MySettings> mySettings)
{
_myArray = mySettings.Value.MyArray;
}
public IActionResult Index()
{
return Json(_myArray);
}
}
你也可以把你的整个配置模型存储在控制器的属性中,如果你需要所有的数据:
public class HomeController : Controller
{
private readonly MySettings _mySettings;
public HomeController(IOptions<MySettings> mySettings)
{
_mySettings = mySettings.Value;
}
public IActionResult Index()
{
return Json(_mySettings.MyArray);
}
}
ASP。NET Core的依赖注入服务就像一个魔法一样:)
从appsettings.json中获取所有section的所有值
public static string[] Sections = { "LogDirectory", "Application", "Email" };
Dictionary<string, string> sectionDictionary = new Dictionary<string, string>();
List<string> sectionNames = new List<string>(Sections);
sectionNames.ForEach(section =>
{
List<KeyValuePair<string, string>> sectionValues = configuration.GetSection(section)
.AsEnumerable()
.Where(p => p.Value != null)
.ToList();
foreach (var subSection in sectionValues)
{
sectionDictionary.Add(subSection.Key, subSection.Value);
}
});
return sectionDictionary;