如何解决MVC5中的wwwroot路径

Question

我想在运行时编辑wwwroot的内容，如何映射~/wwwroot（是否有像VirtualPathUtility这样的实用程序？）

VirtualPathUtility.ToAbsolute("~/wwwroot")不起作用（预期）

Answer 1

首先在控制器的构造函数中注入Microsoft.AspNet.Hosting.IHostingEnvironment，然后使用MapPath方法，如下所示：

public class FooController : Controller
{
    private readonly IHostingEnvironment _hostingEnvironment;

    public FooController(IHostingEnvironment hostingEnvironment)
    {
        _hostingEnvironment= hostingEnvironment;
    }

    public IActionResult Bar()
    {
        // this maps to /wwwroot folder
        var wwwroot = _hostingEnvironment.MapPath("");

        // this maps to /wwwroot/someFolder
        var someFolder=_hostingEnvironment.MapPath("someFolder");
        return View();
    }
}