Electron把网页打包成桌面应用并进行源码加密

前言

　　最近想把自己用html+css+js做的网页界面打包成桌面应用，网上一搜，发现Electron是一个不错的选择，试了试，发现效果真的不错。这里记录一下打包过程以作记录，便于自己以后查看学习。

一、简介

　　Electron是由Github开发，用HTML，CSS和JavaScript来构建跨平台桌面应用程序的一个开源库。 Electron通过将Chromium和Node.js合并到同一个运行时环境中，并将其打包为Mac，Windows和Linux系统下的应用来实现这一目的。

二、打包过程

1.首先保证自己计算机全局安装了nodejs，并且利用nodejs自带的npm全局安装了electron和打包神器electron-packager。两个命令：（npm install electron -g），(npm install electron-packager -g)。注意：npm速度较慢，可以尝试用cnpm，下载安装速度快。

2.在自己的前端网页项目文件夹下，新建 package.json、main.js、index.html 三个文件（注：其中的 index.html 是你的网页首页，就是自己已经写好的网页界面）。

3.在 package.json 中添加如下内容：（name属性值可以自定义，Version属性值也可以自定义，main属性值是根据新建的main.js文件名来的）

{
  "name"    : "app-name",
  "version" : "0.1.0",
  "main"    : "main.js"
}

4.在main.js中插入如下代码：

const {app, BrowserWindow} = require('electron')
const path = require('path')
const url = require('url')
 
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let win
 
function createWindow () {
  // Create the browser window.
  win = new BrowserWindow({width: 800, height: 600})
 
  // and load the index.html of the app.
  win.loadURL(url.format({
    pathname: path.join(__dirname, 'index.html'),
    protocol: 'file:',
    slashes: true
  }))
 
  // Open the DevTools.
  //win.webContents.openDevTools()     //注意：这行代码取消注释的话，就可以使打包生成的应用程序带有开发者模式，类似于chrome的调试模式，可以调试程序的出现的bug
 
  // Emitted when the window is closed.
  win.on('closed', () => {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    win = null
  })
}
 
// 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', createWindow)
 
// 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()
  }
})
 
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 (win === null) {
    createWindow()
  }
})
 
// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.