Menu
I create the class user where i just only define the get method but when i call the class in middleware and use it, it not show any error but when i run the code it show server not found. when i del this line app.use(userRoute) my server work.
users.ts
import { NextFunction, Request, Response } from 'express';
import { Controller, Get, Req, Res } from 'routing-controllers'
@Controller()
class User {
@Get('/signup')
signUP(@Req() req: Request, @Res() res: Response, next: NextFunction) {
return res.render('signup')
};
}
export { User as userRoute }
app.ts
const express = require('express')
const path = require('path')
const app = express()
import { userRoute } from "./routes/user";
const bodyPaser = require('body-parser')
app.use(bodyPaser.urlencoded({ extended: true }))
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'ejs')
app.use(userRoute)
app.use('/', (req, res) => {
res.write('<html lang="eng">');
res.write('<head><title>Page</title><style>body{background-color: wheat; color: red; font- size: 25px; padding-left: 250px;}.d{}</style></head>')
res.write('<body><h1>It is working</h1></body>')
res.write('</html>')
return res.end()
});
app.listen('3000')
console.log('working')
526
Use named exports to export multiple classes in TypeScript, e.g. export class A {} and export class B {} . The exported classes can be imported by using a named import as import {A, B} from './another-file' . You can have as many named exports as necessary in a file.
A “middleware” in Express is just a function that intercepts every request so that you can return a custom response or apply a custom filter when a request reaches your server. You can also call the next function to pass on the request for processing (to another registered middleware).
export = and import = require() TypeScript supports export = to model the traditional CommonJS and AMD workflow. The export = syntax specifies a single object that is exported from the module. This can be a class, interface, namespace, function, or enum.
create instance of your class before export. Try some like:
class User {
...
}
const userRoute = new User()
export {userRoute}
Updated based in doc of
routing-controllers
according to the github page of that library, the use in express should be like this:
@Controller()
export class UserController {
@Get("/users")
getAll(@Req() request: Request, @Res() response: Response) {
return response.send("Hello response!");
}
}
import "reflect-metadata";
import { useExpressServer } from "routing-controllers";
let express = require("express"); // or you can import it if you have installed typings
let app = express(); // your created express server
// app.use() // you can configure it the way you want
useExpressServer(app, { // register created express server in routing-controllers
controllers: [UserController] // and configure it the way you need (controllers, validation, etc.)
});
app.listen(3000); // run your express server
take a look at their doc
148
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
