[英]NodeJS Electron with express
我正在尝试使用电子(用于网站和桌面应用程序)和 express(用于会话等)制作一个网络应用程序
现在,我把它作为我的 app.js:
const express = require('express');
const {app, BrowserWindow} = require('electron');
exp = express();
exp.set('views', __dirname + '/views/');
exp.use(express.static(process.cwd() + '/views'));
exp.get('/', function(req, res) {
res.render('index', {});
});
function onAppReady()
{
mainWindow = new BrowserWindow({
width: 1080,
height: 720,
autoHideMenuBar: true,
useContentSize: true,
resizable: false
});
mainWindow.loadURL('http://localhost:5000/');
mainWindow.focus();
mainWindow.webContents.openDevTools();
}
app.on('ready', onAppReady);
现在,有几个问题:
node app.js
, node app.js
收到此错误:Line: `app.on('ready', onAppReady);`
TypeError: Cannot read property 'on' of undefined
at Object.<anonymous> (/home/josh/chat_program/client/app.js:26:4)
at Module._compile (module.js:571:32)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:488:32)
at tryModuleLoad (module.js:447:12)
at Function.Module._load (module.js:439:3)
at Module.runMain (module.js:605:10)
at run (bootstrap_node.js:420:7)
at startup (bootstrap_node.js:139:9)
at bootstrap_node.js:535:3
electron .
,应用程序启动,但我没有收到请求或网页。 我得到的只是基本的 HTML,没有任何东西(只有 doctype HTML HEAD 和 BODY)。我搜索了很长时间,但找不到任何东西。
两件事情。
首先,我会澄清您的路径设置和用法,更像这样:
const publicPath = path.resolve(__dirname, '/views');
// point for static assets
app.use(express.static(publicPath));
//view engine setup
app.set('views', path.join(__dirname, '/views/'));
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
其次,我会将我所有的 express 代码包装到一个单独的文件中,该文件是一个自执行函数,因此在您需要时它会运行一次。 例如我称之为app.js
文件的 express 文件:
'use strict';
(function () {
const express = require('express');
const path = require('path');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const routes = require('./routes.js');
const app = express();
const publicPath = path.resolve(__dirname, '../dist');
const port = 3000;
// point for static assets
app.use(express.static(publicPath));
//view engine setup
app.set('views', path.join(__dirname, '../dist'));
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended:true
}));
app.use('/', routes);
app.use(cookieParser());
const server = app.listen(port, () => console.log(`Express server listening on port ${port}`));
module.exports = app;
}());
然后在我的主文件中(我称之为main.js
而不是 app.js,在我的例子中),我实例化应用程序和快速服务器,如下所示:
'use strict';
const app = require('electron').app;
const Window = require('electron').BrowserWindow; // jshint ignore:line
const Tray = require('electron').Tray; // jshint ignore:line
const Menu = require('electron').Menu; // jshint ignore:line
const fs = require('fs');
const server = require('./ServerSide/app');
let mainWindow = null;
app.on('ready', function () {
const path = require('path');
const iconPath = path.resolve(__dirname, './dist/myicon.ico');
const appIcon = new Tray(iconPath);
mainWindow = new Window({
width: 1280,
height: 1024,
autoHideMenuBar: false,
useContentSize: true,
resizable: true,
icon: iconPath
// 'node-integration': false // otherwise various client-side things may break
});
appIcon.setToolTip('My Cool App');
mainWindow.loadURL('http://localhost:3000/');
// remove this for production
var template = [
{
label: 'View',
submenu: [
{
label: 'Reload',
accelerator: 'CmdOrCtrl+R',
click: function(item, focusedWindow) {
if (focusedWindow) {
focusedWindow.reload();
}
}
},
{
label: 'Toggle Full Screen',
accelerator: (function() {
if (process.platform === 'darwin') {
return 'Ctrl+Command+F';
} else {
return 'F11';
}
})(),
click: function(item, focusedWindow) {
if (focusedWindow) {
focusedWindow.setFullScreen(!focusedWindow.isFullScreen());
}
}
},
{
label: 'Toggle Developer Tools',
accelerator: (function() {
if (process.platform === 'darwin') {
return 'Alt+Command+I';
} else {
return 'Ctrl+Shift+I';
}
})(),
click: function(item, focusedWindow) {
if (focusedWindow) {
focusedWindow.toggleDevTools();
}
}
}
]
}
];
const menu = Menu.buildFromTemplate(template);
Menu.setApplicationMenu(menu);
mainWindow.focus();
});
// shut down all parts to app after windows all closed.
app.on('window-all-closed', function () {
app.quit();
});
请注意,我在 Windows 平台上成功使用了它,因此可能需要对本示例中列出的任何特定于平台的项目进行小的调整。
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