我如何要求在node.js文件夹中的所有文件?

需要像这样的东西:

files.forEach(function (v,k){
  // require routes
  require('./routes/'+v);
}};

当前回答

我使用节点模块复制到模块来创建一个文件,以需要我们基于nodejs的系统中的所有文件。

我们的实用程序文件的代码是这样的:

/**
 * Module dependencies.
 */

var copy = require('copy-to');
copy(require('./module1'))
.and(require('./module2'))
.and(require('./module3'))
.to(module.exports);

在所有的文件中,大多数函数都被写成export,如下所示:

exports.function1 = function () { // function contents };
exports.function2 = function () { // function contents };
exports.function3 = function () { // function contents };

所以,然后使用文件中的任何函数,你只需要调用:

var utility = require('./utility');

var response = utility.function2(); // or whatever the name of the function is

其他回答

当require得到一个文件夹的路径时,它会在该文件夹中查找index.js文件;如果有一个,它就使用它,如果没有,它就失败。

这可能是最有意义的(如果你可以控制文件夹)创建一个index.js文件,然后分配所有的“模块”,然后简单地要求。

yourfile.js

var routes = require("./routes");

index.js

exports.something = require("./routes/something.js");
exports.others = require("./routes/others.js");

如果你不知道文件名,你应该写一些加载器。

加载器的工作示例:

var normalizedPath = require("path").join(__dirname, "routes");

require("fs").readdirSync(normalizedPath).forEach(function(file) {
  require("./routes/" + file);
});

// Continue application logic here

另一种选择是使用require-dir包,它允许您执行以下操作。它也支持递归。

var requireDir = require('require-dir');
var dir = requireDir('./path/to/dir');

在这个glob解决方案上展开。如果你想将所有模块从一个目录导入到index.js中,然后将该index.js导入到应用程序的另一部分,那么就这样做。注意,stackoverflow使用的高亮显示引擎不支持模板文字,因此这里的代码可能看起来很奇怪。

const glob = require("glob");

let allOfThem = {};
glob.sync(`${__dirname}/*.js`).forEach((file) => {
  /* see note about this in example below */
  allOfThem = { ...allOfThem, ...require(file) };
});
module.exports = allOfThem;

完整的示例

目录结构

globExample/example.js
globExample/foobars/index.js
globExample/foobars/unexpected.js
globExample/foobars/barit.js
globExample/foobars/fooit.js

globExample - js操作。

const { foo, bar, keepit } = require('./foobars/index');
const longStyle = require('./foobars/index');

console.log(foo()); // foo ran
console.log(bar()); // bar ran
console.log(keepit()); // keepit ran unexpected

console.log(longStyle.foo()); // foo ran
console.log(longStyle.bar()); // bar ran
console.log(longStyle.keepit()); // keepit ran unexpected

globExample foobars / index . js

const glob = require("glob");
/*
Note the following style also works with multiple exports per file (barit.js example)
but will overwrite if you have 2 exports with the same
name (unexpected.js and barit.js have a keepit function) in the files being imported. As a result, this method is best used when
your exporting one module per file and use the filename to easily identify what is in it.

Also Note: This ignores itself (index.js) by default to prevent infinite loop.
*/

let allOfThem = {};
glob.sync(`${__dirname}/*.js`).forEach((file) => {
  allOfThem = { ...allOfThem, ...require(file) };
});

module.exports = allOfThem;

globExample foobars /无法js。

exports.keepit = () => 'keepit ran unexpected';

globExample foobars / barit js。

exports.bar = () => 'bar run';

exports.keepit = () => 'keepit ran';

globExample foobars / fooit js。

exports.foo = () => 'foo ran';

在安装了glob的项目中,运行node example.js

$ node example.js
foo ran
bar run
keepit ran unexpected
foo ran
bar run
keepit ran unexpected

我知道这个问题已经有5年多了,给出的答案也很好,但我想要一些更强大的express,所以我为npm创建了express-map2包。我打算把它简单地命名为express-map,但是雅虎的人已经有了这个名字的包,所以我不得不重命名我的包。

1. 基本用法:

app.js (or whatever you call it)

var app = require('express'); // 1. include express

app.set('controllers',__dirname+'/controllers/');// 2. set path to your controllers.

require('express-map2')(app); // 3. patch map() into express

app.map({
    'GET /':'test',
    'GET /foo':'middleware.foo,test',
    'GET /bar':'middleware.bar,test'// seperate your handlers with a comma. 
});

控制器的使用方法:

//single function
module.exports = function(req,res){

};

//export an object with multiple functions.
module.exports = {

    foo: function(req,res){

    },

    bar: function(req,res){

    }

};

2. 高级用法,带前缀:

app.map('/api/v1/books',{
    'GET /': 'books.list', // GET /api/v1/books
    'GET /:id': 'books.loadOne', // GET /api/v1/books/5
    'DELETE /:id': 'books.delete', // DELETE /api/v1/books/5
    'PUT /:id': 'books.update', // PUT /api/v1/books/5
    'POST /': 'books.create' // POST /api/v1/books
});

正如您所看到的,这节省了大量的时间,并使应用程序的路由非常易于编写、维护和理解。它支持所有表示支持的HTTP动词,以及特殊的.all()方法。

NPM包:https://www.npmjs.com/package/express-map2 Github回购:https://github.com/r3wt/express-map

我有一个文件夹/字段的文件与单个类每个,例如:

fields/Text.js -> Test class
fields/Checkbox.js -> Checkbox class

把它放到fields/index.js中,导出每个类:

var collectExports, fs, path,
  __hasProp = {}.hasOwnProperty;

fs = require('fs');    
path = require('path');

collectExports = function(file) {
  var func, include, _results;

  if (path.extname(file) === '.js' && file !== 'index.js') {
    include = require('./' + file);
    _results = [];
    for (func in include) {
      if (!__hasProp.call(include, func)) continue;
      _results.push(exports[func] = include[func]);
    }
    return _results;
  }
};

fs.readdirSync('./fields/').forEach(collectExports);

这使得模块的行为更像在Python中:

var text = new Fields.Text()
var checkbox = new Fields.Checkbox()