我有一个简单的 Angular 4 应用程序,我想使用 Angular Universal(nodeJs 服务器端渲染)在服务器端运行。
我关注了these steps使用 Angular-cli 帮助配置 Angular Universal,一切都很好,直到我尝试使用 Angular 环境。
当我尝试访问环境常量中的属性时,它在客户端(使用 ngserve)完美呈现,但在服务器端( ts-node src/server.ts
)它会抛出以下错误:
Error: Cannot find module 'environments/environment'
at Function.Module._resolveFilename (module.js:470:15)
at Function.Module._load (module.js:418:25)
at Module.require (module.js:498:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (C:\Dev\code-carama\src\app\auth.service.ts:3:1)
at Module._compile (module.js:571:32)
at Module.m._compile (C:\Dev\code-carama\node_modules\ts-node\src\index.ts:385:23)
at Module._extensions..js (module.js:580:10)
at Object.require.extensions.(anonymous function) [as .ts] (C:\Dev\code-carama\node_modules\ts-node\src\index.ts:388:12)
at Module.load (module.js:488:32)
npm ERR! Windows_NT 10.0.14393
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
npm ERR! node v7.10.0
npm ERR! npm v4.2.0
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! code-carama@0.0.0 start: `ts-node src/server.ts`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the code-carama@0.0.0 start script 'ts-node src/server.ts'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the code-carama package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! ts-node src/server.ts
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs code-carama
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls code-carama
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\dima\AppData\Roaming\npm-cache\_logs\2017-06-05T12_00_03_595Z-debug.log
这是我的server.ts
:
import 'reflect-metadata';
import 'zone.js/dist/zone-node';
import { platformServer, renderModuleFactory } from '@angular/platform-server';
import { enableProdMode } from '@angular/core';
import { AppServerModuleNgFactory } from '../dist/ngfactory/src/app/app.server.module.ngfactory';
import * as express from 'express';
import { readFileSync } from 'fs';
import { join } from 'path';
const PORT = 4000;
enableProdMode();
const app = express();
let template = readFileSync(join(__dirname, '..', 'dist', 'index.html')).toString();
app.engine('html', (_, options, callback) => {
const opts = { document: template, url: options.req.url };
//it serves html from the compiled angular app from the server
renderModuleFactory(AppServerModuleNgFactory, opts)
.then(html => callback(null, html));
});
app.set('view engine', 'html');
app.set('views', 'src')
app.get('*.*', express.static(join(__dirname, '..', 'dist')));
app.get('*', (req, res) => {
res.render('index', { req });
});
app.listen(PORT, () => {
console.log(`listening on http://localhost:${PORT}!`);
});
尝试访问环境变量的简单服务是 auth.service.ts
:
import { Injectable } from '@angular/core';
import { environment } from 'environments/environment';
@Injectable()
export class AuthService {
private userManager = null;
constructor() {
console.log('AuthService instantiated in environment ' + environment.envName); //this will fail in server-side rendering
}
}
知道 NodeJs(或 Angular Universal)找不到该环境模块是怎么回事吗?
谢谢
最佳答案
在项目中,Angular6 将“environments/environment”更改为“src/environments/environment”
关于node.js - 使用 Angular Universal 在服务器端运行时找不到模块环境,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44368628/