使用 ConfigurationBuilder 设置基本路径

对象的应用程序基路径。我正在开发的网络应用程序。我在配置构建器上总是出错。这就是我得到的错误。

DNX,Version=v4.5.1 error CS1061: 'ConfigurationBuilder' does not contain a definition for 'SetBasePath' and no extension method 'SetBasePath' accepting a first argument of type 'ConfigurationBuilder' could be found (are you missing a using directive or an assembly reference?)

我假设我的 .AddJsonFile()和 .AddEnvironmentVariables()会得到相同的错误。我做错什么了吗？我没有向我的 project. json 添加正确的依赖项吗？我附上了我的 Startup.cs 和我的项目 t.json。

Project Json

{
"version": "1.0.0-*",
"compilationOptions": {
"emitEntryPoint": true
},
"tooling": {
"defaultNamespace": "TripPlanner"
},


"dependencies": {
"Microsoft.AspNet.StaticFiles":  "1.0.0-rc1-final",
"Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
"Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
"Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
"Microsoft.Framework.Configuration": "1.0.0-beta8",
"Microsoft.Framework.DependencyInjection": "1.0.0-beta8"
//"Microsoft.Extensions.PlatformAbstractions": "1.0.0-beta8"
},


"commands": {
"web": "Microsoft.AspNet.Server.Kestrel"
},


"frameworks": {
"dnx451": { },
"dnxcore50": { }
},


"exclude": [
"wwwroot",
"node_modules"
],
"publishExclude": [
"**.user",
"**.vspscc"
]
}

Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNet.Builder;
using Microsoft.AspNet.Hosting;
using Microsoft.AspNet.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.PlatformAbstractions;
using Microsoft.Framework.Configuration;
using Microsoft.Framework.DependencyInjection;
using TripPlanner.Services;






namespace TripPlanner
{
public class Startup
{
public static IConfigurationRoot Configuration;


public Startup(IApplicationEnvironment appEnv){
var builder = new ConfigurationBuilder()
.SetBasePath(appEnv.ApplicationBasePath)
.AddJsonFile("config.json")
.AddEnvironmentVariables();


Configuration = builder.Build();
}


// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(Microsoft.Extensions.DependencyInjection.IServiceCollection services)
{
services.AddMvc();
#if DEBUG
services.AddScoped<IMailService, DebugMailService> ();
#else
services.AddScoped<IMailService, RealMailService> ();
#endif
}


// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app)
{
//app.UseDefaultFiles();
app.UseStaticFiles();
app.UseMvc(config =>
{
config.MapRoute(
name: "Default",
template: "{controller}/{action}/{id?}",
defaults: new { controller  = "App", action = "Index"}
);
});


}


// Entry point for the application.
public static void Main(string[] args) => Microsoft.AspNet.Hosting.WebApplication.Run<Startup>(args);
}
}

错误出现在 startup.cs 顶部附近的 public startup函数中。