asp.net - 使用Asp.net Core 2.1将Angular 5.2更新为Angular 6 Visual Studio Mac 7.5.2

Question

我正在尝试使用下面的命令更新angular 5.2create from.netcore 2.1core模板

dotnet new angular -o my-new-app
cd my-new-app
cd ClientApp
npm install --save <package_name>

用于创建角度项目的链接- https://docs.microsoft.com/en-us/aspnet/core/spa/angular?view=aspnetcore-2.1&tabs=visual-studio
现在我按照链接更新到angular 6 How to update / upgrade from Angular 4 to Angular 5+
使用另一个链接进行更新，但所有链接都显示相同的错误
https://asish.com.au/how-to-upgrade-angular-5-application-to-angular-6-with-visual-studio-2017/
https://update.angular.io/
但是有很多错误
处理请求时发生未处理的异常。
AggregateException:发生一个或多个错误。（发生了一个或多个错误。（npm脚本“start”退出，但未指示angular cli正在侦听请求。错误输出为：未知选项：'--extractcss'
）
这是我的package.json文件

{
  "name": "WebApp",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve --extract-css",
    "build": "ng build --extract-css",
    "build:ssr": "npm run build -- --app=ssr --output-hashing=media",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^6.0.4",
    "@angular/common": "^6.0.4",
    "@angular/compiler": "^6.0.4",
    "@angular/core": "^6.0.4",
    "@angular/forms": "^6.0.4",
    "@angular/http": "^6.0.4",
    "@angular/platform-browser": "^6.0.4",
    "@angular/platform-browser-dynamic": "^6.0.4",
    "@angular/platform-server": "^6.0.4",
    "@angular/router": "^6.0.4",
    "@nguniversal/module-map-ngfactory-loader": "^6.0.0",
    "aspnet-prerendering": "^3.0.1",
    "bootstrap": "^4.1.1",
    "core-js": "^2.4.1",
    "rxjs": "^6.2.0",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.6.8",
    "@angular/cli": "^6.0.8",
    "@angular/compiler-cli": "^6.0.4",
    "@angular/language-service": "^6.0.4",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~10.3.1",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~3.1.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "^2.0.2",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^2.0.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^1.1.0",
    "protractor": "^5.3.2",
    "ts-node": "~6.1.0",
    "tslint": "~5.10.0",
    "typescript": "~2.9.1"
  },
  "optionalDependencies": {
    "node-sass": "^4.9.0"
  }
}

斯达克

public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

            // In production, the Angular files will be served from this directory
            services.AddSpaStaticFiles(configuration =>
            {
                configuration.RootPath = "ClientApp/dist";
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseSpaStaticFiles();

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

            app.UseSpa(spa =>
            {
                // To learn more about options for serving an Angular SPA from ASP.NET Core,
                // see https://go.microsoft.com/fwlink/?linkid=864501

                spa.Options.SourcePath = "ClientApp";

                if (env.IsDevelopment())
                {
                    spa.UseAngularCliServer(npmScript: "start");
                }
            });
        }
    }

贾森

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "WebApp": {
      "root": "",
      "sourceRoot": "src",
      "projectType": "application",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist",
            "index": "src/index.html",
            "main": "src/main.ts",
            "tsConfig": "src/tsconfig.app.json",
            "progress": true,
            "polyfills": "src/polyfills.ts",
            "assets": [
              "src/assets"
            ],
            "styles": [
              "src/styles.css",
              "node_modules/bootstrap/dist/css/bootstrap.min.css"
            ],
            "scripts": []
          },
          "configurations": {
            "production": {
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "WebApp:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "WebApp:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "WebApp:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "karmaConfig": "./karma.conf.js",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.spec.json",
            "scripts": [],
            "styles": [
              "src/styles.css",
              "node_modules/bootstrap/dist/css/bootstrap.min.css"
            ],
            "assets": [
              "src/assets"
            ]
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "src/tsconfig.app.json",
              "src/tsconfig.spec.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        }
      }
    },
    "WebApp-e2e": {
      "root": "",
      "sourceRoot": "e2e",
      "projectType": "application",
      "architect": {
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "./protractor.conf.js",
            "devServerTarget": "WebApp:serve"
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "e2e/tsconfig.e2e.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        }
      }
    }
  },
  "defaultProject": "WebApp",
  "schematics": {
    "@schematics/angular:component": {
      "prefix": "app",
      "styleext": "css"
    },
    "@schematics/angular:directive": {
      "prefix": "app"
    }
  }
}

错误详细信息

有人能告诉我怎样用适当的连接把角5.2转换成角6吗

Answer 1

更新角度5.2到6的完整步骤

dotnet new angular -o my-new-app
cd my-new-app
cd ClientApp
npm install

首先，使用以下命令将angular cli全局更新到最新版本：

npm install -g @angular/cli

接下来，我们需要更新特定于应用程序的angular cli本地版本。为此，导航到angular app根文件夹（package.json所在的文件夹）并运行以下命令。

npm install @angular/cli

angular cli现在支持包含多个项目的工作区，例如多个应用程序或库。因此，现在可以在同一个cli项目（称为工作区）中使用多个应用程序，并创建库（一组共享的组件、指令、管道和服务）！这个新的架构使用angular.json而不是.angular-cli.json进行构建和项目配置。因此，需要删除.angular-cli.json文件，并在项目中添加新的angular.json文件。别担心，你不必手动操作。运行以下命令将配置文件转换为新格式（angular.json）。

ng update @angular/cli

成功完成此命令后，可以在解决方案资源管理器中看到angular.json文件。我必须运行此命令两次才能获取新文件。因此，如果第一次运行该命令后在解决方案资源管理器中找不到新的angular.json文件，请再试一次。
接下来，是时候将所有框架包升级到angular 6了。为此，请运行以下命令：

ng update @angular/core

所有的角度框架包都升级到角度6。您可以通过package.json文件验证它。
接下来，运行ng update来识别和更新其他依赖项。
Angular6现在依赖于TypeScript2.7和RxJS6。所以，我们需要升级rxjs。您可能已经在考虑在使用rxjs导入和运算符的任何地方手动更改代码。别担心，有个包裹能搞定这件事。运行以下命令升级rxjs。

npm install -g rxjs-tslint
rxjs-5-to-6-migrate -p src/tsconfig.app.json

完成后，删除rxjs compat。这个包需要与版本6之前的rxjs向后兼容。但是，现在不再需要它了，所以让我们使用以下命令删除它：

npm uninstall rxjs-compat

现在，运行ng serve以查看应用程序正在构建和运行，没有任何错误。这里还剩下一件事。如果我们从Visual Studio 2017生成应用程序并运行它，您可能会在浏览器中看到以下异常。
InvalidOperationException:NPM脚本“start”退出，但未指示Angular CLI正在侦听请求。错误输出为：未知选项：'-extractcss'
这是因为ng serve命令不再支持--extractcss选项。extract css是一个javascript库和一个在线工具，允许您从html文档中提取元素id、类和内联样式，并将它们作为css样式表输出。此选项在NG SERVE上不可用，因为它是与建筑相关的选项，而不是与SERVICE相关的选项。
要解决此问题，请从package.json文件的scripts部分的ng serve命令中删除--extract css选项。

"start": "ng serve"

保存package.json文件，构建应用程序并再次运行。你应该在浏览器中看到应用程序正在运行。
源链接- http://www.talkingdotnet.com/upgrade-angular-5-app-angular-6-visual-studio-2017/