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需要快递中的东西

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我是node.js和表达的新手,我想知道我是否需要app.js中的东西我还需要在index.js和user.js等个人路由文件中要求它

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  • 1

    快递项目的示例结构:

    /example
        app.js
        /bin
           www
        package.json
        /node_modules
            [about 4,500 subdirectories and files]
        /public
           /images
           /javascripts
           /stylesheets
              style.css
        /routes
           index.js
           users.js
        /views
           error.pug
           index.pug
           layout.pug
    

    /app.js:

    var createError = require('http-errors');
     var express = require('express');
     var path = require('path');
     var logger = require('morgan');
    
     var indexRouter = require('./routes/index');
     var usersRouter = require('./routes/users');
    
     var app = express();
    
     // view engine setup
     app.set('views', path.join(__dirname, 'views'));
     app.set('view engine', 'pug');
    
     app.use(logger('dev'));
     app.use(express.json());
     app.use(express.urlencoded({ extended: false }));
     app.use(express.static(path.join(__dirname, 'public')));
    
      app.use('/', indexRouter);
      app.use('/users', usersRouter);
    
      // catch 404 and forward to error handler
      app.use(function(req, res, next) {
      next(createError(404));
      });
    
      // error handler
      app.use(function(err, req, res, next) {
      // set locals, only providing error in development
      res.locals.message = err.message;
      res.locals.error = req.app.get('env') === 'development' ? err : {};
    
      // render the error page
      res.status(err.status || 500);
      res.render('error');
    });
    
    module.exports = app;
    

    /routes/index.js:

    var express = require('express');
    var router = express.Router();
    
    /* GET home page. */
    router.get('/', function(req, res, next) {
    res.render('index', { title: 'Express' });
    });
    
    module.exports = router;
    

    /routes/user.js:

    var express = require('express');
    var router = express.Router();
    
    /* GET users listing. */
    router.get('/', function(req, res, next) {
      res.send('respond with a resource');
    });
    
    module.exports = router;
    

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