NodeJS Electron 与 express [英] NodeJS Electron with express
本文介绍了NodeJS Electron 与 express的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
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)制作网络应用程序
I'm trying to make a webapplication using electron (for the website and desktop application) and express (for sessions etc.)
现在，我把它作为我的 app.js:
Now, I got this as my 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:
- 如果我使用
node app.js，我会收到此错误:
- If I use
node app.js, I get this error:
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
- 如果我使用
electron .，应用程序会启动，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).
- If I use
electron ., the application starts, but I don't get either a request or a webpage. All I get is basic HTML without anything (only doctype HTML HEAD and BODY).
找了半天也没找到.
推荐答案
两件事.
首先我要澄清一下你的路径设置和使用，更像这样:
First I'd clarify your pathing setup and usage, more like this:
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 代码包装到一个文件中，该文件是一个自执行函数，因此它会在您需要时运行一次.比如我的快递文件，我称之为 app.js 文件:
Second, I would wrap all my express code into a single file that is a self-executing function, so it runs once when you require it. Such as my express file which I call my app.js file:
'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(在我的例子中我称之为 main.js 而不是 app.js)中，我将应用程序和 express 服务器实例化如下:
Then in my main file (which I call main.js not app.js, in my case), I instantiate the app and the express server as follows:
'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 平台上成功使用了此功能，因此可能需要对本示例中列出的任何平台特定项目进行小幅调整.
Note that I am using this with success on Windows platform, so small tweaks may be needed for any platform specific items listed in this example.
这篇关于NodeJS Electron 与 express的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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