vue项目中 +electron 桌面应用

我们在开发时，有需求要把这个项目变成桌面应用，我们可以用electron来实现；

在本机上需要下载几个包，来对应electron应用

创建一个 electron-builder 文件夹，里边在创建一个Cache 文件夹，Cache文件夹里边放入 nsis 和 winCodeSign 文件夹

nsis 文件夹中放入 nsis-3.0.4.2 和 nsis-resources-3.4.1

下边是 Cache 的压缩包

链接：https://pan.baidu.com/s/1l2ePv7RH3WCMSq4sBkqhpQ 大约有22M左右
提取码：yubt

配置好以后就新创建一个vue项目（使用的是vue-cli3）

vue create my-app

选择default；自动生成vue项目，

生成项目之后

$ cd my-app
$ npm run serve

打开本地localhost

http://localhost:8080/

项目就初始化做好了，

Ctrl+C 关掉服务后，我们来安装 electron

由于网络问题，使用 npm 安装 Electron 会比较慢。这里我改用 cnpm，首先执行如下命令安装 cnpm：

npm install -g cnpm --registry=https://registry.npm.taobao.org

　　再接着安装electron包

cnpm install --save-dev electron

cnpm install --save-dev electron-builder

　　安装包下载后我们在根目录创建main.js,写入以下代码

/* jshint esversion: 6 */

const electron = require("electron");
// Module to control application life.
const app = electron.app;
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow;
// const newWindowBtn = document.getElementById('frameless-window')
/*获取electron窗体的菜单栏*/
const Menu = electron.Menu;
/*隐藏electron创听的菜单栏*/
Menu.setApplicationMenu(null);

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 mainWindow;

function createWindow() {
  // 创建一个窗口，大小 800 * 600
  mainWindow = new BrowserWindow({
     1920,
    height: 1080,
    useContentSize: true,
    frame: false,
    transparent: true
  });

  // 在窗口内要展示的内容为 ./dist/index.html，即打包生成的index.html
  mainWindow.loadURL(
    url.format({
      pathname: path.join(__dirname, "./dist", "index.html"),
      protocol: "file:",
      slashes: true
    })
  );

  // 自动打开调试台
  // mainWindow.webContents.openDevTools({
  //   detach: true
  // });

  // Open the DevTools.
  // mainWindow.webContents.openDevTools()

  // Emitted when the window is closed.
  mainWindow.on("closed", function() {
    // 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.
    // 回收BrowserWindow对象
    mainWindow = 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", function() {
  // On OS X 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", function() {
  // On OS X 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 (mainWindow === 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.

　　找到 package.json 文件，加入以下10-24行代码

"main": "main.js",
  "build": {
    "appId": "com.hangge.demo",
    "copyright": "Copyright © 2019 hangge.com",
    "nsis": {
      "oneClick": true,
      "perMachine": true,
      "runAfterFinish": true
    },
    "files": [
      "dist/static",
      "dist/*.html",
      "*.js"
    ]
  },

　　然后在 package.json 文件的 scripts 中加入

    "start": "electron .",
    "pack": "electron-builder --dir",
    "dist": "electron-builder"

　　npm run build

npm run start

就可以查看electron桌面应用项目；

然后发现应用是打开了，但是什么都没显示；

我又在项目根目录创建 vue.config.js 文件；写入

module.exports = {
  publicPath: "./",
  outputDir: "dist",
  assetsDir: "static"
};

　然后桌面应用就出来；

再次 npm run build

npm run pack

就可以在dist文件夹中看到

双击打开应用程序；

注意：新创的vue项目html，body是没有背景色的，所以不设置的话打包出来的应用程序是透明的。