如何在startup.cs的Configure方法中使用ConfigurationBinder
本文关键字:方法 ConfigurationBinder Configure startup cs | 更新日期: 2023-09-27 18:03:53
asp.net mvc 6 beta5
我尝试使用config.json来激活''disactive logging
public IConfiguration Configuration { get; set; }
public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
{
var configurationBuilder = new ConfigurationBuilder(appEnv.ApplicationBasePath)
.AddJsonFile("config.json")
.AddEnvironmentVariables();
Configuration = configurationBuilder.Build();
DBContext.ConnectionString = Configuration.Get("Data:DefaultConnection:ConnectionString");
}
public void ConfigureServices(IServiceCollection services)
{
services.AddOptions();
services.Configure<AppSettings>(Configuration.GetConfigurationSection("AppSettings"));
}
// Configure is called after ConfigureServices is called.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerfactory)
{
// that line cause NullReferenceException
AppSettings settings = ConfigurationBinder.Bind<AppSettings>(Configuration);
if (settings.Log.IsActive)
{
................
}
ASP。NET 5(vNext(-获取配置设置和http://perezgb.com/2015/07/04/aspnet-5-typed-settings-with-the-configurationbinder/
有没有其他方法可以在"configure"方法中获得AppSettings的实例?我需要键入的对象。
ConfigureServices
中配置的每个服务都可以通过运行时注入Configure
方法:
public void Configure(IApplicationBuilder app, IOptions<AppSettings> options)
{
// access options.Options here
}
这是一个比直接访问ServiceProvider
更干净的解决方案。
您可以使用服务定位器获得如下结果
IOptions<AppSettings> settings = app.ApplicationServices.GetService<IOptions<AppSettings>>();
if (settings.Options.whatever)
{
...
}
我注意到,如果你用VS2015的最终版本创建一个新项目,项目模板不会像以前的项目模板那样包含AppSettings,不知道为什么。