利用Asp.Net Core MVC的Razor引擎来做前端模版

单独版本的Razor用起来像是后妈生的

Asp.Net Core MVC本身是用来写服务端的，我有一个奇葩的想法：我准备用来做前端模板引擎，把cshtml渲染成静态的html文件部署

搞个扩展，用于输出模版字符串

//https://stackoverflow.com/questions/40912375/return-view-as-string-in-net-core

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.AspNetCore.Mvc.ViewEngines;
using Microsoft.AspNetCore.Mvc.ViewFeatures;
using System.IO;
using System.Threading.Tasks;

public static class ControllerExtensions
    {
        public static async Task<string> RenderViewAsync<TModel>(this Controller controller, string viewName, TModel model, bool isPartial = false)
        {
            if (string.IsNullOrEmpty(viewName))
            {
                viewName = controller.ControllerContext.ActionDescriptor.ActionName;
            }

            controller.ViewData.Model = model;

            using (var writer = new StringWriter())
            {
                IViewEngine viewEngine = controller.HttpContext.RequestServices.GetService(typeof(ICompositeViewEngine)) as ICompositeViewEngine;
                ViewEngineResult viewResult = GetViewEngineResult(controller, viewName, isPartial, viewEngine);

                if (viewResult.Success == false)
                {
                    throw new System.Exception($"A view with the name {viewName} could not be found");
                }

                ViewContext viewContext = new ViewContext(
                    controller.ControllerContext,
                    viewResult.View,
                    controller.ViewData,
                    controller.TempData,
                    writer,
                    new HtmlHelperOptions()
                );

                await viewResult.View.RenderAsync(viewContext);

                return writer.GetStringBuilder().ToString();
            }
        }

        private static ViewEngineResult GetViewEngineResult(Controller controller, string viewName, bool isPartial, IViewEngine viewEngine)
        {
            if (viewName.StartsWith("~/"))
            {
                var hostingEnv = controller.HttpContext.RequestServices.GetService(typeof(IHostingEnvironment)) as IHostingEnvironment;
                return viewEngine.GetView(hostingEnv.WebRootPath, viewName, !isPartial);
            }
            else
            {
                return viewEngine.FindView(controller.ControllerContext, viewName, !isPartial);
            }
        }
    }

准备在这里写事件，把其他模版进行编译，每次按F5把所有的cshtml都保存成.html静态文件

public class HomeController : Controller
    {
        public async Task<IActionResult> IndexAsync()
        {
            var html = await this.RenderViewAsync("~/Views/Home/Index.cshtml", new { });
            Console.WriteLine(html);
            return View();
        }
    }

防止静态js css文件被缓存

<script src="js/access.js" asp-append-version="true"></script>

编译后将生成：

<script src="js/access.js?v=5GEX-XriYrVTj0KQYUQLJAoF2R-D-CbE88HQqoWdk9g"></script>