我是 Nodejs 新手,下面是我通过 express --sessions --css less --hogan app
命令安装的 app.js
。
我尝试将 app.js
中的注释行移至一个新文件调用 route_handler.js
。
我不确定我做得是否正确,我只在 app.js
中添加了 require('./route_handler.js');
,我应该这样做吗在 route_handler.js
中导出,但它是 express()
?
怎么解决?
require
是否表示已执行文件中的代码?
app.js
var express = require('express');
var path = require('path');
// var favicon = require('serve-favicon');
// var logger = require('morgan');
// var cookieParser = require('cookie-parser');
// var bodyParser = require('body-parser');
// var routes = require('./routes/index');
// var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hjs');
// end: view engine setup
require('./route_handler.js');
// // uncomment after placing your favicon in /public
// //app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
// app.use(logger('dev'));
// app.use(bodyParser.json());
// app.use(bodyParser.urlencoded({ extended: false }));
// app.use(cookieParser());
// app.use(require('less-middleware')(path.join(__dirname, 'public')));
// app.use(express.static(path.join(__dirname, 'public')));
// app.use('/', routes);
// app.use('/users', users);
// // catch 404 and forward to error handler
// app.use(function(req, res, next) {
// var err = new Error('Not Found');
// err.status = 404;
// next(err);
// });
// // error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
route_handler.js
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
// var app = express();
var routes = require('./routes/index');
var users = require('./routes/users');
// uncomment after placing your favicon in /public
//express().use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
express().use(logger('dev'));
express().use(bodyParser.json());
express().use(bodyParser.urlencoded({ extended: false }));
express().use(cookieParser());
express().use(require('less-middleware')(path.join(__dirname, 'public')));
express().use(express.static(path.join(__dirname, 'public')));
express().use('/', routes);
express().use('/users', users);
// catch 404 and forward to error handler
express().use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
//暴露express() ??
最佳答案
您的问题是 route_handler.js
脚本在每个 use
调用中创建新的 express
实例,并且它们都没有连接到在您的 app.js
中创建的应用程序。
你可能应该做的是:
route_handler.js
// !!!NOTE: no express = require !!!
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var routes = require('./routes/index');
var users = require('./routes/users');
function setupRoutes(app)
{
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
...
}
module.exports = setupRoutes;
和app.js
...
require('./route_handler.js')(app);
...
关于javascript - Nodejs单独的代码包括中间件use(),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31563052/