Javascript 如何在node.js应用程序中正确访问express设置的应用程序变量？

我正在构建node.js服务器，我的文件夹结构如下所示：

• server.js
• app/routes.js
• app/routes/users.js

我的问题是，我不确定如何使用users.js文件中的

app

变量。是否必须在此文件中再次要求并设置express，或者是否有更好/更简单的方法？这是我的示例代码（只是理解我的问题的最低要求）：

server.js

// Include our packages in our main server file
var express     = require('express');
var stormpath   = require('express-stormpath');
var app         = express();

// Init Stormpath for user management and authentication
app.use(stormpath.init(app));

// Load routes
require('./app/routes')(app);

// Start the server
app.listen(process.env.PORT);

// Stormpath will let you know when it's ready to start authenticating users.
app.on('stormpath.ready', function () {
  console.log('Your server is running on port ' + port + '.');
});

// Import dependencies
const express   = require('express');
const stormpath = require('express-stormpath');

// Export the routes for our app to use
module.exports = function(app) {
  // Create API group routes
  const apiRoutes = express.Router();

  // User management: get users, invite users, view user profile
  var UsersRoute = require('./routes/users');
  apiRoutes.get('/memberinfo', stormpath.loginRequired, UsersRoute.memberInfo);

  // Set url for API group routes
  app.use('/', apiRoutes);
};

// Protected route test
module.exports.memberInfo = function(req, res){
  //how do i access the "app" here?
    res.status(200).send({ user: req.user });
}

app/routes.js

// Include our packages in our main server file
var express     = require('express');
var stormpath   = require('express-stormpath');
var app         = express();

// Init Stormpath for user management and authentication
app.use(stormpath.init(app));

// Load routes
require('./app/routes')(app);

// Start the server
app.listen(process.env.PORT);

// Stormpath will let you know when it's ready to start authenticating users.
app.on('stormpath.ready', function () {
  console.log('Your server is running on port ' + port + '.');
});

// Import dependencies
const express   = require('express');
const stormpath = require('express-stormpath');

// Export the routes for our app to use
module.exports = function(app) {
  // Create API group routes
  const apiRoutes = express.Router();

  // User management: get users, invite users, view user profile
  var UsersRoute = require('./routes/users');
  apiRoutes.get('/memberinfo', stormpath.loginRequired, UsersRoute.memberInfo);

  // Set url for API group routes
  app.use('/', apiRoutes);
};

// Protected route test
module.exports.memberInfo = function(req, res){
  //how do i access the "app" here?
    res.status(200).send({ user: req.user });
}

app/routes/users.js

// Include our packages in our main server file
var express     = require('express');
var stormpath   = require('express-stormpath');
var app         = express();

// Init Stormpath for user management and authentication
app.use(stormpath.init(app));

// Load routes
require('./app/routes')(app);

// Start the server
app.listen(process.env.PORT);

// Stormpath will let you know when it's ready to start authenticating users.
app.on('stormpath.ready', function () {
  console.log('Your server is running on port ' + port + '.');
});

// Import dependencies
const express   = require('express');
const stormpath = require('express-stormpath');

// Export the routes for our app to use
module.exports = function(app) {
  // Create API group routes
  const apiRoutes = express.Router();

  // User management: get users, invite users, view user profile
  var UsersRoute = require('./routes/users');
  apiRoutes.get('/memberinfo', stormpath.loginRequired, UsersRoute.memberInfo);

  // Set url for API group routes
  app.use('/', apiRoutes);
};

// Protected route test
module.exports.memberInfo = function(req, res){
  //how do i access the "app" here?
    res.status(200).send({ user: req.user });
}

---

在

.memberInfo

方法中，您可以使用访问与该请求关联的

应用程序

对象

如果未向您传递可通过这种方式使用的

req

对象，则需要通过调用模块上的方法并向其传递

app

对象来初始化模块，然后模块可以在本地存储

app

对象，以便在需要时使用它