为生产构建我的电子 vue 应用程序后出现白屏
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【中文标题】为生产构建我的电子 vue 应用程序后出现白屏【英文标题】:White screen after building my electron-vue app for production 【发布时间】:2020-02-13 06:20:18 【问题描述】:我正在构建一个具有多个窗口的电子 vue 应用程序,我正在使用 vue-router。
该应用在从 Visual Studio Code 终端(开发模式)运行时运行良好,但在为生产构建它之后,我得到一个白屏。
这是我的代码
public/index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
<title>EmaFlow Work Sessiong Tracker</title>
</head>
<body>
<noscript>
<strong>We're sorry but statement-ts doesn't work properly without javascript enabled. Please enable it to
continue.</strong>
</noscript>
<div id="app" class="h-100"></div>
<!-- built files will be auto injected -->
</body>
</html>
src/App.vue
<template>
<div id="app" class="h-100">
<router-view />
</div>
</template>
src/router.ts
import Vue from 'vue';
import Router from 'vue-router';
import LoginWindow from '@/views/LoginWindow.vue';
import MainWindow from '@/views/MainWindow.vue';
Vue.use(Router);
export default new Router(
routes: [
path: '/',
name: 'login',
component: LoginWindow,
,
path: '/main',
name: 'main',
component: MainWindow,
,
],
);
src/main.ts
import Vue from 'vue';
import VeeValidate from 'vee-validate';
import VueTimers from 'vue-timers'
import App from './App.vue';
import router from './router';
Vue.use(VeeValidate);
Vue.use(VueTimers)
Vue.config.productionTip = false;
new Vue(
router,
render: (h) => h(App),
).$mount('#app');
import $ from 'jquery'
import 'bootstrap/dist/css/bootstrap.min.css'
import 'bootstrap/dist/js/bootstrap.bundle.min.js'
import '@fortawesome/fontawesome-free/js/all.min.js';
src/background.ts
'use strict'
import app, protocol, BrowserWindow, ipcMain, Event from 'electron'
import
createProtocol,
installVueDevtools
from 'vue-cli-plugin-electron-builder/lib'
const isDevelopment = process.env.NODE_ENV !== 'production'
// Scheme must be registered before the app is ready
protocol.registerSchemesAsPrivileged([ scheme: 'app', privileges: secure: true, standard: true ])
const appWindows: BrowserWindow[] = [];
function createWindow(slug: string, options?: object)
const defaultOptions =
width: 800,
height: 600,
frame: false,
webPreferences:
nodeIntegration: true,
,
;
const windowOptions = Object.assign(, defaultOptions, options);
const window = new BrowserWindow(windowOptions);
appWindows.push(window);
if (process.env.WEBPACK_DEV_SERVER_URL)
// Load the url of the dev server if in development mode
window.loadURL(process.env.WEBPACK_DEV_SERVER_URL as string + '/#' + slug);
window.webContents.openDevTools();
else
createProtocol('app')
// Load the index.html when not in development
window.loadURL('app://./index.html' + '/#' + slug);
window.on('closed', () =>
appWindows.splice(appWindows.indexOf(window), 1);
);
function createLoginWindow()
createWindow('/',
width: 400,
height: 300,
resizable: isDevelopment,
);
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', async () =>
if (isDevelopment && !process.env.IS_TEST)
// Install Vue Devtools
try
await installVueDevtools();
catch (e)
// console.error('Vue Devtools failed to install:', e.toString());
createLoginWindow();
);
app.on('activate', () =>
// On macOS it's common to re-create a window in the app when the
// dock icon is clicked and there are no other windows open.
if (appWindows.length === 0)
createLoginWindow();
)
// Quit when all windows are closed.
app.on('window-all-closed', () =>
// On macOS it is common for applications and their menu bar
// to stay active until the user quits explicitly with Cmd + Q
if (process.platform !== 'darwin')
app.quit()
)
ipcMain.on('open-window', (e: Event, arg: WindowParams) =>
createWindow(arg.route, arg.options);
);
// Exit cleanly on request from parent process in development mode.
if (isDevelopment)
if (process.platform === 'win32')
process.on('message', data =>
if (data === 'graceful-exit')
app.quit()
)
else
process.on('SIGTERM', () =>
app.quit()
)
package.json
"name": "emaflow-worksession-tracker",
"version": "0.1.0",
"private": true,
"scripts":
"lint": "vue-cli-service lint",
"build": "vue-cli-service electron:build",
"serve": "vue-cli-service electron:serve",
"postinstall": "electron-builder install-app-deps",
"postuninstall": "electron-builder install-app-deps"
,
"main": "background.js",
"dependencies":
"axios": "^0.19.0",
"bootstrap": "^4.3.1",
"core-js": "^2.6.10",
"howler": "^2.1.2",
"jquery": "^3.4.1",
"popper.js": "^1.15.0",
"typescript": "^3.6.4",
"vee-validate": "^2.2.15",
"vue": "^2.6.10",
"vue-class-component": "^7.0.2",
"vue-property-decorator": "^8.2.2",
"vue-router": "^3.1.3",
"vue-timers": "^2.0.4"
,
"devDependencies":
"@fortawesome/fontawesome-free": "^5.11.2",
"@vue/cli-plugin-babel": "^3.12.0",
"@vue/cli-plugin-typescript": "^3.12.0",
"@vue/cli-service": "^3.12.0",
"electron": "^5.0.11",
"stylus": "^0.54.7",
"stylus-loader": "^3.0.2",
"vue-cli-plugin-electron-builder": "^1.4.0",
"vue-template-compiler": "^2.6.10"
在应用启动时,将显示一个登录窗口,成功登录后,登录窗口将关闭并打开另一个窗口。
为了打开一个窗口,我在background.ts
中创建了函数createWindow
,它将路由器路径作为第一个参数。例如,要创建登录窗口,我调用createWindow('/', options)
,并在成功登录后创建主应用程序窗口,我编写createWindow('/main', options)
。
我认为我的问题出在window.loadUrl
中的createWindow
中的background.ts
中,但我不确定生产模式的正确网址应该是什么。
请提前告知和感谢。
【问题讨论】:
当一个 js 错误将阻止进一步的 js 评估时,我已经看到了这种问题。您可以尝试从 index.html 中删除脚本标记,以查看是否创建了登录页面。对此类问题也有帮助的是在您的 prod 版本中打开 DevTools 并在控制台中查看错误。 @anwar 为什么你有自定义协议('app')?检查 loadURL 函数是否支持自定义协议? 我从 index.html 中删除了 script 标签,并在 main.ts 中导入了 jquery。我在 prod 版本中打开了开发工具,控制台中没有错误但仍然出现白屏,它没有加载 index.html,我在开发工具中看不到 index.html 的内容,我只看到空的正文。关于应用程序协议,老实说我不知道它是什么,我从一些样板或教程中复制了这些代码行。如果我删除这些代码行,我会在控制台中收到类似“无法加载资源:net::ERR_UNKNOWN_URL_SCHEME app://./js/app.7cbb0157.js:1”的错误,看起来需要此协议。 【参考方案1】:最后我可以让window.loadUrl
为生产版本工作,如下所示:
createProtocol('app');
window.loadURL(formatUrl(
pathname: path.join(__dirname, 'index.html'),
protocol: 'file',
slashes: true
));
上面的代码可以运行,但是它只打开了登录窗口,它在 vue-router 路由列表中有路径“/”。
要为“/main”之类的另一条路由打开一个窗口,我尝试将哈希和路由附加到路径名,如下所示:
window.loadURL(formatUrl(
pathname: path.join(__dirname, 'index.html#', slug),
protocol: 'file',
slashes: true
));
但它不起作用,在开发工具网络选项卡上我看到了这个错误:
名称:index.html%23/ 状态:(已屏蔽:其他)
请指教
编辑:在将hash
属性添加到传递给formatUrl
的选项对象后,所有工作都可以正常工作,而不是手动附加到pathname
:
window.loadURL(formatUrl(
pathname: path.join(__dirname, 'index.html'),
protocol: 'file',
slashes: true,
hash: slug
));
【讨论】:
只需使用不带formatUrl
的path.join
方法,因为formatUrl 对您给定的url 进行编码,但您需要将# 作为# 而不是html 编码形式。以上是关于为生产构建我的电子 vue 应用程序后出现白屏的主要内容,如果未能解决你的问题,请参考以下文章