Angular 4 <app-root>未加载

Question

＆＃13;

＆＃13;

{
  "name": "angular-hello-world",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^4.0.0",
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/forms": "^4.0.0",
    "@angular/http": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@angular/router": "^4.0.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.4.1",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.2.7",
    "@angular/compiler-cli": "^4.0.0",
    "@angular/language-service": "^4.0.0",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "~3.0.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.0.4",
    "tslint": "~5.3.2",
    "typescript": "~2.3.3"
  },
  "description": "This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 1.2.7.",
  "main": "karma.conf.js",
  "keywords": [],
  "author": ""
}

＆＃13;

＆＃13;

＆＃13;

我开始使用Angular。

安装了最新的node.js（v6.11.2） 安装的打字稿 安装角度cli 1.0.0

使用ng new -ng4 angular-hello-world创建项目。

然后去了项目地点

ng serve。

服务器正常工作，我得到了“正在加载...”＃39;文字，但角度不是加载，以使“应用程序工作”＃39;文本。

我正在使用代理服务器执行此操作，但我不认为这是因为项目已成功创建并且ng服务命令成功启动服务器。

如果我将正常的html标记添加到index.html文件中，我可以在页面刷新时看到它。所以它必须工作。

只是不加载角度。

任何人都可以帮助我吗？

由于