javascript - Node.js Controller

Question

我目前对 Node.js - Express 框架非常陌生，并且正在尝试模拟 MVC 模式，到目前为止我已经了解了

app.js

var express = require('express');
var path = require('path');
var favicon = require('static-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var http = require('http');

var app = module.exports = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.set('port', process.env.PORT || 3000);

app.use(favicon());
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

require('./routes');

/// catch 404 and forwarding 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: {}
    });
});

http.createServer(app).listen(app.get('port'), function() {
    console.log("Running server");
});

只是使用 Express 生成器生成的普通 app.js，经过一些修改，现在是我的 paths/index.js

app = require('../app');

app.get('/test', function(req, res) {
    require('./controllers/test.js');
    test();
}); 

app.get('/', function(req, res) {
    res.send('yankevf');
}); 

正如您在路线/test 上看到的，如果查找模块/controllers/test.js 但由于没有实际的模块，因此无法工作..

如何包含文件夹 Controller 内的文件？因为我的服务器一直在node_modules内搜索

Answer 1

看起来你基本上就在那里......

从您的问题来看，您的文件夹结构似乎是:

./app.js
./routes
  -> index.js
./controllers
  -> test.js

如果是这样的话，这应该可行:

app = require('../app');

app.get('/test', function(req, res, next) {
    test = require('../controllers/test.js'); // Note the path, one directory up
    // Passing the req, res, next arguments on to your controller allows it to respond
    // i.e. res.json({msg: 'hello world'}).
    test(req, res, next);
});

尽管您可能不想在每个新请求上加载 Controller ，而是加载(需要)一次，然后在每个请求上调用它:

app = require('../app');
testController = require('../controllers/test.js');

app.get('/test', function(req, res, next) {
    // Passing the req, res, next arguments on to your controller allows it to respond
    // i.e. res.json({msg: 'hello world'}).
    testController(req, res, next);
});

如果您直接将这些参数传递给 Controller ​​(就像您应该的那样)，您可以更简洁地编写它:

app = require('../app');
testController = require('../controllers/test.js');

// Call your controller, automatically passing 'req', 'res', 'next' arguments. 
app.get('/test', testController);

有关自动安装路由的完整示例，请查看:Express MVC example