在Ionic Framework Ionic上针对Android 8发行版进行编译时，收到“应用程序错误net :: ERR_CONNECTION_REFUSED（http：// localhost /）

Question

[尝试在Android 8实际设备上运行应用程序时收到“应用程序错误net :: ERR_CONNECTION_REFUSED（http://localhost/）。它是在Ionic Framework Ionic，发行版上编译的。

我已经尽力在互联网上可以找到的所有东西。还有其他想法吗？

Ionic:

   Ionic CLI          : 5.1.0 (C:\Users\me\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework    : ionic-angular 3.9.8
   @ionic/app-scripts : 3.2.4

Cordova:

   Cordova CLI       : not installed
   Cordova Platforms : none
   Cordova Plugins   : cordova-plugin-ionic 4.1.7, cordova-plugin-ionic-keyboard 2.1.2, cordova-plugin-ionic-webview 1.2.1, (and 15 other plugins)

Utility:

   cordova-res : 0.3.0
   native-run  : 0.2.6

System:

   NodeJS : v8.10.0 (c:\Program Files\nodejs\node.exe)
   npm    : 6.11.3
   OS     : Windows 10

这些是我的package.json依赖项：

  "dependencies": {
    "@angular/animations": "~7.2.15",
    "@angular/common": "~7.2.15",
    "@angular/compiler": "~7.2.15",
    "@angular/compiler-cli": "~7.2.15",
    "@angular/core": "~7.2.15",
    "@angular/forms": "~7.2.15",
    "@angular/http": "~7.2.15",
    "@angular/platform-browser": "~7.2.15",
    "@angular/platform-browser-dynamic": "~7.2.15",
    "@ionic-native/background-mode": "5.14.0",
    "@ionic-native/badge": "^5.14.0",
    "@ionic-native/browser-tab": "5.14.0",
    "@ionic-native/calendar": "5.14.0",
    "@ionic-native/core": "^5.14.0",
    "@ionic-native/http": "5.14.0",
    "@ionic-native/in-app-browser": "5.14.0",
    "@ionic-native/network": "5.14.0",
    "@ionic-native/onesignal": "5.14.0",
    "@ionic-native/pro": "5.14.0",
    "@ionic-native/splash-screen": "5.14.0",
    "@ionic-native/status-bar": "5.14.0",
    "@ionic/pro": "^2.0.4",
    "@ionic/storage": "2.2.0",
    "@reactivex/rxjs": "6.5.3",
    "@vimeo/player": "2.10.0",
    "android-versions": "1.5.0",
    "cordova-android": "^7.0.0",
    "cordova-ios": "5.0.1",
    "cordova-plugin-add-swift-support": "2.0.2",
    "cordova-plugin-badge": "^0.8.8",
    "cordova-plugin-browsertab": "0.2.0",
    "cordova-plugin-calendar": "5.1.4",
    "cordova-plugin-compat": "1.2.0",
    "cordova-plugin-device": "2.0.3",
    "cordova-plugin-file": "^6.0.2",
    "cordova-plugin-file-transfer": "^1.7.1",
    "cordova-plugin-inappbrowser": "3.1.0",
    "cordova-plugin-ionic": "^5.4.4",
    "cordova-plugin-ionic-keyboard": "2.2.0",
    "cordova-plugin-ionic-webview": "^1.2.1",
    "cordova-plugin-splashscreen": "^5.0.3",
    "cordova-plugin-statusbar": "2.4.3",
    "cordova-plugin-whitelist": "1.3.4",
    "if-env": "^1.0.4",
    "ionic-angular": "3.9.8",
    "ionicons": "4.6.3",
    "npm-gui": "^2.1.0",
    "npm-install-peers": "^1.2.1",
    "onesignal-cordova-plugin": "^2.6.0",
    "promise-polyfill": "^8.1.3",
    "rxjs": "^6.5.3",
    "rxjs-compat": "^6.5.3",
    "sw-toolbox": "3.6.0",
    "zone.js": "^0.8.29"
  },

Answer 1

您收到该错误，因为数据不在您的设备上。它无法访问您的android设备上的本地主机，因为没有。最好的办法是在计算机的仿真器上运行它。在那里您可以使用本地主机。检查How to solve Error Code: 0, Message HTTP failure on android - IONIC API，看看是否有帮助。如果您对配置有任何疑问，请随时询问。

Answer 2

您可以运行您的应用。只需使用USB电缆将设备与计算机连接，然后打开镶边并检查元件。单击右上角的三个点（自定义和控制devTools）。然后选择“更多工具”>“远程设备”。您可以在那里看到您的设备。像附件一样添加服务器端口。在您的手机中打开Chrome，然后输入服务器网址，然后按http://localhost:3000键即可。现在，您可以打开自己的android应用，并且可以访问服务器。