小满Vue3第三十九章（Vue开发桌面程序Electron）

Electron官网Electron | Build cross-platform desktop apps with JavaScript, HTML, and CSS.

我们用的VsCode 也是 electron 开发的

electron 内置了 Chromium 和 nodeJS 其中 Chromium 是渲染进程 主要渲染和解析HTML，Nodejs作为主进程，其中管道用IPC 通信

1.使用vite 构建 electron项目

创建一个vite 项目

npm init vite@latest

安装electron

npm install electron -D
npm install vite-plugin-electron -D

根目录新建 electron / index.ts

修改vite.config.ts 配置文件

引入electron插件配置main entry对应electron的文件

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import electron from 'vite-plugin-electron'
// https://vitejs.dev/config/
export default defineConfig({
  plugins: [vue(), electron({
    main: {
      entry: "electron/index.ts"
    }
  })]
})

编写代码 electron / index.ts

import { app, BrowserWindow } from 'electron'
import path from 'path'
//app 控制应用程序的事件生命周期。
//BrowserWindow 创建并控制浏览器窗口。

let win: BrowserWindow | null;
//定义全局变量获取 窗口实例

const createWindow = () => {
    win = new BrowserWindow({
        //
        webPreferences: {
            devTools: true,
            contextIsolation: false,
            nodeIntegration: true
            //允许html页面上的javascipt代码访问nodejs 环境api代码的能力（与node集成的意思）
        }
    })
    if (app.isPackaged) {
        win.loadFile(path.join(__dirname, "../index.html"));
    } else {
        win.loadURL(`http://${process.env['VITE_DEV_SERVER_HOST']}:${process.env['VITE_DEV_SERVER_PORT']}`)
    }
}

app.whenReady().then(createWindow)

配置package json 增加main 字段** type 去掉**

{
  "name": "electron-vite",
  "private": true,
  "version": "0.0.0",
  "main": "dist/electron/index.js",
  "scripts": {
    "dev": "vite",
    "build": "vue-tsc --noEmit && vite build  &&  electron-builder",
    "preview": "vite preview"
  },
  "dependencies": {
    "vue": "^3.2.37"
  },
  "devDependencies": {
    "@vitejs/plugin-vue": "^3.0.0",
    "electron": "^19.0.10",
    "electron-builder": "^23.1.0",
    "typescript": "^4.6.4",
    "vite": "^3.0.0",
    "vite-plugin-electron": "^0.8.3",
    "vue-tsc": "^0.38.4"
  }
}

npm run dev

2.打包Electron

需要安装electron-builder

npm install electron-builder -D

package json 配置 build 修改npm run build命令

"build": "vue-tsc --noEmit && vite build  &&  electron-builder",

  "build": {
    "appId": "com.electron.desktop",
    "productName": "electron",
    "asar": true,
    "copyright": "Copyright © 2022 electron",
    "directories": {
      "output": "release/"
    },
    "files": [
      "dist"
    ],
    "mac": {
      "artifactName": "${productName}_${version}.${ext}",
      "target": [
        "dmg"
      ]
    },
    "win": {
      "target": [
        {
          "target": "nsis",
          "arch": [
            "x64"
          ]
        }
      ],
      "artifactName": "${productName}_${version}.${ext}"
    },
    "nsis": {
      "oneClick": false,
      "perMachine": false,
      "allowToChangeInstallationDirectory": true,
      "deleteAppDataOnUninstall": false
    },
    "publish": [
      {
        "provider": "generic",
        "url": "http://127.0.0.1:8080"
      }
    ],
    "releaseInfo": {
      "releaseNotes": "版本更新的具体内容"
    }
  }

npm run build

3.Electron Vscode 输出乱码解决 方案

dev 的时候 加上chcp 65001 输出中文

 "dev": "chcp 65001 && vite",

加上之后

4.渲染进程和主进程通信

vite.config.ts 需要修改 不然会报一个错Error: Module "path" has been externalized for browser compatibility. Cannot

只要安装了 vite-plugin-electron 就会带上 vite-plugin-electron-renderer 直接引入用就行

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import electron from 'vite-plugin-electron'
import electronRender from 'vite-plugin-electron-renderer'
// https://vitejs.dev/config/
export default defineConfig({
  plugins: [vue(), electron({
    main: {
      entry: "electron/index.ts"
    }
  }),electronRender()],
  build:{
    emptyOutDir: false,
  }
})

渲染进程使用ipcRenderer 发送

import { ipcRenderer } from 'electron'

const open = () => {
     ipcRenderer.send('openFlyCar')
}

主进程使用 ipcMain 接受

ipcMain.on('openFlyCar',()=>{
    console.log('收到')
})

主进程通知渲染进程

const  win = new BrowserWindow(xxxxx)
win!.webContents.send('load', { message: "electron初始化了" })

渲染进程接受

ipcRenderer.on('load',(_,data)=>{
  console.log(data)
})