asp.net - 发布到 azure、asp.net core React 应用程序

Question

我用谷歌搜索了很多，但我还没弄清楚该怎么做。我有一个网络应用程序，想部署在 azure 上。我生成了链接，但使用我的 React 组件的路由返回 500 状态代码。

对于我的组件，我使用 JSX，并将它们放在/js 下的 wwwroot 文件夹中(我没有使用 ES16)。

我需要一些东西来捆绑它并将 jsx 处理成 js 对吗？我不明白为什么它在本地主机上工作。

在 Startup.cs 的配置方法中，我添加了如下脚本:

app.UseReact(config =>
        {

            config
              .AddScript("~/js/test.jsx")
              .AddScript("~/js/users.jsx")
              .AddScript("~/js/userCards.jsx")
              .AddScript("~/js/userInfo.jsx")
              .AddScript("~/js/cards.jsx")
              .AddScript("~/js/user.jsx")
              .AddScript("~/js/addCard.jsx")
              .AddScript("~/js/cardImages.jsx")

              .SetJsonSerializerSettings(new JsonSerializerSettings
              {
                  StringEscapeHandling = StringEscapeHandling.EscapeHtml,
                  ContractResolver = new CamelCasePropertyNamesContractResolver()
              });

        });

如果这是一个愚蠢的问题，我很抱歉，但我似乎找不到 ASP.NET Core 的良好解释。

[编辑]我正在使用 VS2017、asp.net core 1.0.4 和 React.AspNet 3.0.1

错误日志:

ReactEngineNotFoundException: No usable JavaScript engine was found. Please 
install a JavaScript engine such as React.JavaScriptEngine.ClearScriptV8 (on 
 Windows) or React.JavaScriptEngine.VroomJs (on Linux and Mac OS X). Refer 
  to the ReactJS.NET documentation for more details.
   React.AspNet.HtmlHelperExtensions.get_Environment()

   TinyIoCResolutionException: Unable to resolve type: 
  React.JavaScriptEngineFactory
  React.AspNet.HtmlHelperExtensions.get_Environment()

  TinyIoCResolutionException: Unable to resolve type: React.ReactEnvironment
  React.AspNet.HtmlHelperExtensions.get_Environment()

   ReactNotInitialisedException: ReactJS.NET has not been initialised 
   correctly. Please ensure you have called app.AddReact() and 
   app.UseReact() in your Startup.cs file.
    React.AspNet.HtmlHelperExtensions.get_Environment()

它说我没有 app.AddReact 也没有 app.UseReact，但我都有......

 public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
        services.AddReact();

        services.AddServerSentEvents();
        services.AddServerSentEvents<INotificationsServerSentEventsService, NotificationsServerSentEventsService>();

        services.AddMvc();            

        services.AddSingleton<HttpClient>();
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory, IServiceProvider serviceProvider)
    {
        loggerFactory.AddConsole(Configuration.GetSection("Logging"));
        loggerFactory.AddDebug();

        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
            app.UseBrowserLink();
        }
        else
        {
            app.UseDeveloperExceptionPage();
            app.UseBrowserLink();
        }


        app.MapServerSentEvents("/see-heartbeat");
        app.MapServerSentEvents("/sse-notifications", serviceProvider.GetService<NotificationsServerSentEventsService>());

        app.UseStatusCodePagesWithReExecute("/Error/{0}");

        app.UseReact(config =>
        {

            config
              .AddScript("~/js/test.jsx")
              .AddScript("~/js/users.jsx")
              .AddScript("~/js/userCards.jsx")
              .AddScript("~/js/userInfo.jsx")
              .AddScript("~/js/cards.jsx")
              .AddScript("~/js/user.jsx")
              .AddScript("~/js/addCard.jsx")
              .AddScript("~/js/cardImages.jsx")

              .SetJsonSerializerSettings(new JsonSerializerSettings
              {
                  StringEscapeHandling = StringEscapeHandling.EscapeHtml,
                  ContractResolver = new CamelCasePropertyNamesContractResolver()
              });

        });

        app.UseDefaultFiles();
        app.UseStaticFiles();


        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Index}/{action=Index}/{id?}");
        });


    }

Answer 1

这是因为 JavaScript 引擎位于您的 PC 上，而不是位于 Azure 中。摘自:https://github.com/reactjs/React.NET/issues/400 (实际上是关于如何让 React 工作的完整说明)

结合使用这些指南，我能够在将应用程序发布到 Azure 时正常运行:

http://www.samulihaverinen.com/web-development/dotnet/2016/01/19/how-to-run-clearscript-v8-javascript-engine-in-azure/

https://github.com/Taritsyn/JavaScriptEngineSwitcher/wiki/Registration-of-JS-engines

从第一个指南开始，我单独安装了依赖项:

Uninstall-Package React.AspNet
Install-Package JavaScriptEngineSwitcher.Core
Install-Package JavaScriptEngineSwitcher.Msie (May not be needed)
Install-Package JSPool
Install-Package JavaScriptEngineSwitcher.ChakraCore
Install-Package JavaScriptEngineSwitcher.ChakraCore.Native.win-x64 (Selected native implementation)
Install-Package Microsoft.ChakraCore (I think this is key to enabling ChakraCore on the server)
Install-Package React.AspNet -IgnoreDependencies

在第二个指南中，我安装了一个包以在 .NET Core 1.X 中启用 JavaScriptEngineSwitcher 配置:

Install-Package JavaScriptEngineSwitcher.Extensions.MsDependencyInjection

在 Startup.cs 中

ConfigureServices():
services.AddJsEngineSwitcher(options => options.DefaultEngineName = ChakraCoreJsEngine.EngineName).AddChakraCore();