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运行Electron+Vue项目后,应用显示空白,并报如下错误:

Uncaught ReferenceError: __dirname is not defined
    at eval (index.js?bdb9:4)
    at Object../node_modules/electron/index.js (chunk-vendors.js:1057)
    at __webpack_require__ (app.js:849)
    at fn (app.js:151)
    at eval (App.vue?234e:40)
    at Module../node_modules/cache-loader/dist/cjs.js?!./node_modules/babel-loader/lib/index.js!./node_modules/cache-loader/dist/cjs.js?!./node_modules/vue-loader/lib/index.js?!./src/App.vue?vue&type=script&lang=js& (app.js:938)
    at __webpack_require__ (app.js:849)
    at fn (app.js:151)
    at eval (App.vue?c53a:1)
    at Module../src/App.vue?vue&type=script&lang=js& (app.js:1029)

渲染进程属于浏览器端,没有集成Node的环境

创建渲染进程时,开启node环境,将 nodeIntegration 设置为 true

  win = new BrowserWindow({
    frame: false,
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true,

开启后,依然报如下错误:

Uncaught TypeError: fs.existsSync is not a function
    at getElectronPath (index.js?bdb9:7)
    at eval (index.js?bdb9:18)
    at Object../node_modules/electron/index.js (chunk-vendors.js:1057)
    at __webpack_require__ (app.js:849)
    at fn (app.js:151)
    at eval (App.vue?234e:40)
    at Module../node_modules/cache-loader/dist/cjs.js?!./node_modules/babel-loader/lib/index.js!./node_modules/cache-loader/dist/cjs.js?!./node_modules/vue-loader/lib/index.js?!./src/App.vue?vue&type=script&lang=js& (app.js:938)
    at __webpack_require__ (app.js:849)
    at fn (app.js:151)
    at eval (App.vue?c53a:1)

衍生问题解决方案

创建 preload.js 文件,并在 创建渲染进程时的 webPreferen中设置预加载preload:

  win = new BrowserWindow({
    frame: false,
    width: 800,
    height: 600,
    webPreferences: {
      // nodeIntegration: process.env.ELECTRON_NODE_INTEGRATION
      nodeIntegration: false,
      preload: __dirname + '\\..\\src\\preload.js'

preload.js 文件代码如下:

window.remote = require('electron').remote;

并且将渲染进程的js文件中的JavaScript代码修改如下:

// 将此行代码替换为下面一行,不要使用require
// let { remote } = require('electron');
const remote = window.remote; 

特别说明:因为运行后的根目录是dist_electron目录,所以这个目录我前面做了重定向,将其定向到preload.js中。正式环境应该是不能用的,具体正式环境要怎么解决,目前我也没有搞清楚。

最终解决方案

上面衍生问题解决方案中,每次都用脚本注入的方式毕竟不方便,也不是很好使用。所以可以用如下解决方案:

不使用require关键字,而使用window.require("XXXX")

# 原来的代码
const { remote } = require('electron');
# 修改后的代码
const { remote } window.require('electron'); 

TypeError: fs.existsSync is not a function | import { ipcRenderer } from 'electron'

Uncaught TypeError: fs.existsSync is not a function错误

create-react-app和electron报错fs.existsSync is not a function

Electron报Uncaught ReferenceError: require is not defined