更新Angular 2版本后看不到的路径

Question

我最近将我的angular / cli更新为2.3，但我意识到它无法加载我的路径。但是，当我有一个角度cli版本2.1时，应用程序正在准确加载路径没有问题，但在更新后，我的应用程序中指定的路径都没有能够加载。下面，我的bootsrap.min.css和以前的角度cli版本中加载的其他版本在当前更新的cli版本中不再加载，2.3。任何人都知道为什么会发生这种情况？我已经被困在这3天了。

遇到错误

     http://localhost:4200/bootstrap/css/bootstrap.min.css 404 (Not Found)

        Unhandled Promise rejection: Failed to load ../bootstrap/css/bootstrap.min.css ; Zone: <root> ; Task: Promise.then ; Value: Failed to load ../bootstrap/css/bootstrap.min.css undefined

    ZoneAwareError {__zone_symbol__error: Error: Uncaught (in promise): Failed to load ../bootstrap/css/bootstrap.min.css
        at resolvePromis…, rejection: "Failed to load ../bootstrap/css/bootstrap.min.css", promise: ZoneAwarePromise, zone: Zone, task: ZoneTask}

 http://localhost:4200/font-awesome/css/font-awesome.min.css 404 (Not Found)
GET http://localhost:4200/css/local.css 404 (Not Found)

的package.json

{
  "name": "frontend",
  "version": "0.0.0",
  "license": "MIT",
  "angular-cli": {},
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "test": "ng test",
    "pree2e": "webdriver-manager update --standalone false --gecko false",
    "e2e": "protractor"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "^2.3.1",
    "@angular/compiler": "^2.3.1",
    "@angular/core": "^2.3.1",
    "@angular/forms": "^2.3.1",
    "@angular/http": "^2.3.1",
    "@angular/platform-browser": "^2.3.1",
    "@angular/platform-browser-dynamic": "^2.3.1",
    "@angular/router": "^3.3.1",
    "@types/lodash": "^4.14.54",
    "core-js": "^2.4.1",
    "lodash": "^4.17.4",
    "rxjs": "^5.0.1",
    "ts-helpers": "^1.1.1",
    "zone.js": "^0.7.2"
  },
  "devDependencies": {
    "@angular/compiler-cli": "^2.3.1",
    "@types/jasmine": "2.5.38",
    "@types/node": "^6.0.42",
    "angular-cli": "1.0.0-beta.28.3",
    "codelyzer": "~2.0.0-beta.1",
    "jasmine-core": "2.5.2",
    "jasmine-spec-reporter": "2.5.0",
    "karma": "1.2.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-remap-istanbul": "^0.2.1",
    "protractor": "~4.0.13",
    "ts-node": "1.2.1",
    "tslint": "^4.3.0",
    "typescript": "~2.0.3"
  }
}