获得ASP.NET 5控制器VS 2015年wwwroot文件夹路径

问题描述

对不起，一个noob问题，但似乎我无法从控制器得到使用Server.Mappath。我需要输出的JSON文件列表从图像中的wwwroot文件夹。他们是wwwroot文件/图像。我怎样才能得到一个可靠的wwwroot路径？

Sorry for a noob question, but it seems I can't get Server.MapPath from Controller. I need to output json file list from images folder at wwwroot. They are is at wwwroot/images. How can I get a reliable wwwroot path?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNet.Mvc;
using www.Classes;
using System.Web;

namespace www.Controllers
{
    [Route("api/[controller]")]
    public class ProductsController : Controller
    {
        [HttpGet]
        public IEnumerable<string> Get()
        {
            FolderScanner scanner = new FolderScanner(Server.MapPath("/"));
            return scanner.scan();
        }
    }
}

从使用Server.Mappath System.Web命名似乎不可用。

Server.MapPath seems not available from System.Web namespace.

项目使用ASP.NET 5和DOTNET 4.6框架

Project is using ASP.NET 5 and dotNET 4.6 Framework

推荐答案

您将需要注入 IApplicationEnvironment 进入你的类可以访问 ApplicationBasePath 属性值：阅读关于Dependency注射。成功注入的依赖，在 wwwroot的路径后，应提供给您。例如：

You will need to inject IApplicationEnvironment into your class to have access to the ApplicationBasePath property value: Read about Dependency Injection. After successfully injecting the dependency, the wwwroot path should be available to you. For example:

private readonly IApplicationEnvironment _appEnvironment;

public ProductsController(IApplicationEnvironment appEnvironment)
{
   _appEnvironment = appEnvironment;
}

用法：

 [HttpGet]
 public IEnumerable<string> Get()
 {
    FolderScanner scanner = new FolderScanner(_appEnvironment.ApplicationBasePath);
    return scanner.scan();
 }

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