angular-in-memory-web-api内部服务器错误

Question

我已经达到了Angular's Tour-of-Heroes tutorial中的最新步骤。在使用angular-in-memory-web-api之后，我的屏幕上没有显示任何数据。没有编译错误，但在浏览器的控制台中，我得到了如下信息：

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所有内容都与教程中的完全相同。我还没有找到解决这个问题的方法，所以我不得不自己问。

这是我的package.json的样子：

{
  "name": "tour-of-heroes",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.2.0",
    "@angular/common": "^5.2.0",
    "@angular/compiler": "^5.2.0",
    "@angular/core": "^5.2.0",
    "@angular/forms": "^5.2.0",
    "@angular/http": "^5.2.0",
    "@angular/platform-browser": "^5.2.0",
    "@angular/platform-browser-dynamic": "^5.2.0",
    "@angular/router": "^5.2.0",
    "angular-in-memory-web-api": "^0.6.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.6",
    "zone.js": "^0.8.19"
  },
  "devDependencies": {
    "@angular/cli": "~1.7.1",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "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": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "~2.5.3"
  }
}

Answer 1

这是由于angular- in -memory-web-api版本0.6.0中的更改造成的。解决问题的好方法：

npm install angular-in-memory-web-api@0.5.4 --save

如果您下载教程的完整示例，则package.json具有：

"angular-in-memory-web-api": "~0.5.0",

所以0.6.0超出了范围。