Angular 2 无法显示内容

Question

我要在这个问题的开头说我对 Angular 2 和 Angular 总体上还很陌生，所以这个问题很可能真的简单的答案。不管怎样，就在这里。我一直在尝试创建一个网站，但我的问题是 Angular 不会插入我的组件。它停留在它说正在加载的部分...并且不会加载我的东西，即使它们很简单 HTML。我将提供我非常确定的相关文件，但如果您需要更多，请随时询问。

这是systemjs.config.js：

(function (global) {
    System.config({
        transpiler: 'ts',
        typescriptOptions: {
            // Copy of compiler options in standard tsconfig.json
            "target": "es5",
            "module": "commonjs",
            "moduleResolution": "node",
            "sourceMap": true,
            "emitDecoratorMetadata": true,
            "experimentalDecorators": true,
            "lib": ["es2015", "dom"],
            "noImplicitAny": true,
            "suppressImplicitAnyIndexErrors": true
        },
        meta: {
            'typescript': {
                "exports": "ts"
            }
        },
        paths: {
            // paths serve as alias
            'npm:': 'https://unpkg.com/'
        },
        // map tells the System loader where to look for things
        map: {
            // our app is within the app folder
            'app': 'app',

            // angular bundles
            '@angular/animations': 'npm:@angular/animations/bundles/animations.umd.js',
            '@angular/animations/browser': 'npm:@angular/animations/bundles/animations-browser.umd.js',
            '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
            '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
            '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
            '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
            '@angular/platform-browser/animations': 'npm:@angular/platform-browser/bundles/platform-browser-animations.umd.js',
            '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
            '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
            '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
            '@angular/router/upgrade': 'npm:@angular/router/bundles/router-upgrade.umd.js',
            '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
            '@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',
            '@angular/upgrade/static': 'npm:@angular/upgrade/bundles/upgrade-static.umd.js',

            // other libraries
            'rxjs': 'npm:rxjs@5.0.1',
            'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
            'ts': 'npm:plugin-typescript@5.2.7/lib/plugin.js',
            'typescript': 'npm:typescript@2.2.1/lib/typescript.js',

        },
        // packages tells the System loader how to load when no filename and/or no extension
        packages: {
            app: {
                main: './src/bootstrap.ts',
                defaultExtension: 'ts',
                meta: {
                    './*.ts': {
                        loader: 'systemjs-angular-loader.js'
                    }
                }
            },
            rxjs: {
                defaultExtension: 'js'
            }
        }
    });

})(this);

systemjs-angular-loader.js:

var templateUrlRegex = /templateUrl\s*:(\s*['"`](.*?)['"`]\s*)/gm;
var stylesRegex = /styleUrls *:(\s*\[[^\]]*?\])/g;
var stringRegex = /(['`"])((?:[^\]\|.)*?)/g;

module.exports.translate = function (load) {
    if (load.source.indexOf('moduleId') != -1) return load;

    var url = document.createElement('a');
    url.href = load.address;

    var basePathParts = url.pathname.split('/');

    basePathParts.pop();
    var basePath = basePathParts.join('/');

    var baseHref = document.createElement('a');
    baseHref.href = this.baseURL;
    baseHref = baseHref.pathname;

    if (!baseHref.startsWith('/base/')) { // it is not karma
        basePath = basePath.replace(baseHref, '');
    }

    load.source = load.source
      .replace(templateUrlRegex, function (match, quote, url) {
          let resolvedUrl = url;

          if (url.startsWith('.')) {
              resolvedUrl = basePath + url.substr(1);
          }

          return 'templateUrl: "' + resolvedUrl + '"';
      })
      .replace(stylesRegex, function (match, relativeUrls) {
          var urls = [];

          while ((match = stringRegex.exec(relativeUrls)) !== null) {
              if (match[2].startsWith('.')) {
                  urls.push('"' + basePath + match[2].substr(1) + '"');
              } else {
                  urls.push('"' + match[2] + '"');
              }
          }

          return "styleUrls: [" + urls.join(', ') + "]";
      });

    return load;
};

index.html:

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Website</title>
    <meta name="description" content="">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="/static/css/app.css" />
    <base href="/">
</head>
<body>
    <abi-app>Loading...</abi-app>
</body>
<!-- Libraries imports -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/reflect-metadata/reflect.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<!-- Configure SystemJS -->
<script src="systemjs.config.js"></script>
<script>
    //bootstrap the Angular2 application
    System.import('app').catch(console.log.bind(console));
</script>
<script src="http://localhost:35729/livereload.js"></script>
</html>

gulpfile.js:

var gulp = require('gulp');
var connect = require('gulp-connect');
var PATHS = {
    src: 'src/**/*.ts',
    html: 'src/**/*.html',
    css: 'src/**/*.css'
};

gulp.task('clean', function (done) {
    var del = require('del');
    del(['dist'], done);
});

gulp.task('ts2js', function () {
    var typescript = require('gulp-typescript');
    var sourcemaps = require('gulp-sourcemaps');

    var tsResult = gulp.src(PATHS.src)
      .pipe(sourcemaps.init())
      .pipe(typescript({
          noImplicitAny: true,
          module: 'system',
          target: 'ES5',
          moduleResolution: 'node',
          emitDecoratorMetadata: true,
          experimentalDecorators: true
      }));

    return tsResult.js
      .pipe(sourcemaps.write())
      .pipe(gulp.dest('dist'))
      .pipe(connect.reload());
});

gulp.task('play', ['ts2js'], function () {
    var http = require('http');
    var open = require('open');
    var watch = require('gulp-watch');



    var port = 9000,
      app;

    connect.server({
        root: __dirname,
        port: port,
        livereload: true,
        fallback: 'index.html'
    });
    open('http://localhost:' + port + '/index.html');

    gulp.watch(PATHS.src, ['ts2js']);
    watch(PATHS.html).pipe(connect.reload());
    watch(PATHS.css).pipe(connect.reload());
});

bootstrap.ts:

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './components/app/app.module';
platformBrowserDynamic().bootstrapModule(AppModule);

app.module.ts:

import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouterModule } from '@angular/router';
import { HttpModule } from '@angular/http';
import { Home } from './home';
import { Gallery } from './gallery';
import { AppRoutingModule } from './app-routing.module';
import { NavigationMenuComponent } from './navigation-menu/navigation-menu.component';

import { ABIComponent } from './app.component';
import { HomeModule } from './home/home.module';

@NgModule({
    imports: [BrowserModule, HttpModule, HomeModule, AppRoutingModule],
  declarations: [ABIComponent, NavigationMenuComponent ],
  bootstrap: [ABIComponent ]
})
export class AppModule { }

app.component.ts:

import {Component} from '@angular/core';
import { Router } from '@angular/router';
import { NavigationMenuComponent } from './navigation-menu/navigation-menu.component';

@Component({
    selector: 'abi-app',
    template: `<div>
                    <h1>Hello World!</h1>

               </div>`
})
export class ABIComponent {

}

如果您对这个项目的树感兴趣：

/src

--组件

--- 应用

----app.component.ts

----app.module.ts

-- bootstrap.ts

/gulpfile.js

/index.html

/systemjs-angular-loader.js

/systemjs.config.js

Answer 1

使用@angular/cli代替webpack:-

https://cli.angular.io/

Angular 2 无法显示内容

Angular 2 Trouble Displaying Content

javascript

systemjs

angular