我的angular 7 PWA在离线时找不到文件'ngsw.json'

Question

我正在做一个PWA应用程序，它运行良好（通过Chorme的审核），但当我想在离线模式下尝试它。 出现504 TIMEOUT错误。 DevsTools（Chorme）显示'获取脚本时出现未知错误，无法加载资源：net :: ERR_INTERNET_DISCONNECTED'并且网络切片在应用程序尝试获取时显示失败“ngsw.json？ngsw-cache-bust = 0.30493506524068925 “

这是我的包裹：

{
  "name": "avl",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^7.2.8",
    "@angular/cdk": "^7.3.4",
    "@angular/common": "~7.2.0",
    "@angular/compiler": "~7.2.0",
    "@angular/core": "~7.2.0",
    "@angular/flex-layout": "^7.0.0-beta.24",
    "@angular/forms": "~7.2.0",
    "@angular/http": "^7.2.8",
    "@angular/material": "^7.3.4",
    "@angular/platform-browser": "~7.2.0",
    "@angular/platform-browser-dynamic": "~7.2.0",
    "@angular/pwa": "^0.13.8",
    "@angular/router": "~7.2.0",
    "@angular/service-worker": "^7.2.13",
    "@mapbox/leaflet-pip": "^1.1.0",
    "@types/fontfaceobserver": "^0.0.6",
    "@types/leaflet": "^1.4.3",
    "@types/pixi.js": "4.7.2",
    "cerialize": "^0.1.18",
    "core-js": "^2.5.4",
    "fontfaceobserver": "^2.1.0",
    "leaflet-pixi-overlay": "^1.6.0",
    "moment": "^2.24.0",
    "net": "^1.0.2",
    "pixi.js": "4.7.2",
    "rxjs": "~6.3.3",
    "rxjs-compat": "6.3.3",
    "tslib": "^1.9.0",
    "wellknown": "^0.5.0",
    "zone.js": "~0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.13.7",
    "@angular/cli": "~7.3.3",
    "@angular/compiler-cli": "~7.2.0",
    "@angular/language-service": "^7.2.8",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~3.2.2"
  }
}

这是我的ngsw-config.json

{
  "index": "/index.html",
  "assetGroups": [
    {
      "name": "app",
      "installMode": "prefetch",
      "resources": {
        "files": [
          "/favicon.ico",
          "/index.html",
          "/*.css",
          "/*.js",
          "/*.json"
        ]
      }
    }, {
      "name": "assets",
      "installMode": "lazy",
      "updateMode": "prefetch",
      "resources": {
        "files": [
          "/assets/**",
          "/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani|json)"
        ]
      }
    }
  ]
}

我希望用他的CSS看到应用程序的HTML

Answer 1

网络清单对我来说是正确的。

服务人员不使用ng serve 。 所以你必须做一个prod build（ng build --prod）并在本地用Web服务器提供编译代码。

为了验证您的服务工作者是否已正确安装并且它正在运行：

• 打开Chrome开发工具
• 访问“应用程序”选项卡
• 点击“服务工作者”链接（左侧）

如果服务工作者正在运行，它将在那里显示。

我写了一个分步指南来创建一个Angular PWA（在Github上还有一个最终的DEMO），也许你可以跟着它看看是否有任何遗漏。