从ASP.NET 5控制器VS 2015获取wwwroot文件夹路径

Question

很抱歉有一个noob问题,但似乎我无法从Controller获取Server.MapPath.我需要从wwwroot的images文件夹输出json文件列表.他们是在wwwroot/images.我怎样才能获得可靠的wwwroot路径？

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();
        }
    }
}

System.MapPath似乎在System.Web命名空间中不可用.

Project正在使用ASP.NET 5和dotNET 4.6 Framework

Answer 1

您将需要注入IHostingEnvironment到您的类中以访问ApplicationBasePath属性值:阅读有关依赖注入的信息.成功注入依赖项后,您应该可以使用wwwroot路径.例如:

private readonly IHostingEnvironment _appEnvironment;

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

用法:

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

Answer 2

我知道这已经得到了解答,但根据我的托管环境(IIS Express与IIS),它给了我不同的结果.如果您想获得wwwroot路径,以下方法似乎适用于所有托管环境(请参阅此GitHub问题).

例如

private readonly IHostingEnvironment _hostEnvironment;

public ProductsController(IHostingEnvironment hostEnvironment)
{
   _hostEnvironment = hostEnvironment;
}

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