在 C# 中路由 ASP.NETcore

Question

_Layout 中的 Products/List 字符串有问题。 cshtml。当我启动该站点并单击“产品”选项卡时，没有重定向到 sheet 部分，它给出了 _Layout 中指定的地址路径的 404 error.Instead。 cshtml (asp-action= "Products/List")，它输出“Products%2FList”。问题与路由设置有关吗？但是，如果您手动输入完整地址：https://localhost:44332/Products/List，则控制器可以毫无问题地找到它。

布局：

    <ul class="navbar-nav flex-grow-1">
        <li class="nav-item">
            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
        </li>
        <li class="nav-item">
            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
        <li class="nav-item">
            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Products/List">Products</a>
        </li>

产品控制器：

using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace AppForPryaniki.Controllers
{
    public class ProductsController : Controller
    {
        private ProductReader reader;


        public ProductsController()
        {
            reader = new ProductReader();
        }

        // Products/List
        public IActionResult List()
        {
            List<Product> products = reader.ReadFromFile();

            return View(products);
        }

        // Products/Details/1
        public IActionResult Details(int id)
        {
            List<Product> products = reader.ReadFromFile();
            Product product = products.Where(x => x.Id == id).FirstOrDefault();

            if (product != null)
            {

                return View(product);
            }
            else
            {
                return NotFound();
            }
        }
    }
}

设置路由：

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }
            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
            });
        }
    }
}

家庭控制器

namespace AppForPryaniki.Controllers
{
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;

        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
        }

        public IActionResult Index()
        {

            Product product = new Product();
            product.Id = 1;
            product.Name = "Test";

            return View(product);
        }

        public IActionResult Privacy()
        {
            return View();
        }

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }
        public IActionResult Products()
        {
            return View();
        }


        public IActionResult Test()
        {
            return View();
        }

    }
}

Answer 1

你这里有两个错误：

<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Products/List">Products</a>

首先，您想要路由到 ProductsController 上的某个操作，因此 Home 是用于 asp-controller 的错误值。相反，您想使用 Products.

其次，asp-action 的值也是错误的，因为您想要的操作称为 List，而不是 Products/List。正确的值为 List.

更改后的样子如下：

<a class="nav-link text-dark" asp-area="" asp-controller="Products" asp-action="List">Products</a>

当您检查 https://localhost:44332/Products/List 看它是否有效时，您自己解决了一半。当您能够像那样直接导航到某些内容时，这始终表明您尝试在视图中生成的 link 就是问题所在。

Answer 2

控制器和动作的名称不正确。 asp-controller 应该是 Products 而 asp-action 应该是 List.

在 C# 中路由 ASP.NETcore

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