Node.js 应用程序在注册字符串模块上抛出错误 [英] Node.js application throwing error on registring module

问题描述

我正在关注 Steven Sanderson 的视频 此处 开始使用 NodeJS.我已经安装了 EJS 和 ejs-middleware 模块.server.js 如下所示:

I am following Steven Sanderson's videos here to get started with NodeJS. I have installed EJS and ejs-middleware modules. The server.js is like following:

var express=require('express'),
app = express(),
ejsMiddleware = require('ejs-middleware');

app.use(ejsMiddleware(__dirname + '/static', 'html', app));

但它正在抛出异常，例如:

But it is throwing exception on this like:

app.use(ejsMiddleware(__dirname + '/static', 'html', app));

例外是:

Application has thrown an uncaught exception and is terminated:
TypeError: Object function app(req, res){ app.handle(req, res); } has no method 'register'
    at C:\Users\...Inventify\node_modules\ejs-middleware\ejs-middleware.js:9:23
    at Object.<anonymous> (C:\Users\...Inventify\server.js:8:9)
    at Module._compile (module.js:446:26)
    at Object..js (module.js:464:10)
    at Module.load (module.js:353:31)
    at Function._load (module.js:311:12)
    at Module.require (module.js:359:17)
    at require (module.js:375:17)
    at Object.<anonymous> (C:\Program Files (x86)\iisnode-dev\release\x86\interceptor.js:211:1)
    at Module._compile (module.js:446:26)

我无法了解它的任何头部或尾部.请帮帮我.

I'm not able to get any head or tail of it. Please help me.

-根据@Peter Lyons的此答案进行了以下更改:

- Made the following changes according to this answer by @Peter Lyons:

旧

registerInApp.register('.' + extension, ejs);

新

registerInApp.engine('.' + extension, require(ejs));

但现在得到以下异常:

TypeError: Object #<Object> has no method 'substring'
    at Function._resolveLookupPaths (module.js:235:23)
    at Function._resolveFilename (module.js:327:31)
    at Function._load (module.js:279:25)
    at Module.require (module.js:359:17)
    at require (module.js:375:17)
    at C:\Users\...Inventify\node_modules\ejs-middleware\ejs-middleware.js:10:47
    at Object.<anonymous> (C:\Users\...Inventify\server.js:12:9)
    at Module._compile (module.js:446:26)
    at Object..js (module.js:464:10)
    at Module.load (module.js:353:31)

推荐答案

看起来需要更新 ejs-middleware 以调用 app.engine 而不是 >app.register 使用 express 3.0.作为一种解决方法，不要将 app 参数传递给 ejsMiddleware 函数，而是自己手动注册它:

It looks like ejs-middleware needs to be updated to call app.engine instead of app.register to work with express 3.0. As a workaround, don't pass the app argument to the ejsMiddleware function and instead manually register it yourself:

app.engine('.html', require('ejs').renderFile);

我更新了那个.它实际上直接来自 app.engine 的 express.js 文档.据我所知(我个人不使用 ejs)，看起来您根本不需要 ejs-middleware 并且可以只使用 visionmedia/ejs 和完成它.

I updated that. It's actually straight from the express.js documentation for app.engine. From what I can tell (I don't use ejs personally), it looks like you don't need ejs-middleware at all and can just use visionmedia/ejs and be done with it.

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