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Rainbow๐ŸŒˆCoder

My dev Note๐Ÿ“’

Javascript/Node.js

[Node.js] (7) Node ๋ชจ๋“ˆ ์‹œ์Šคํ…œ ์‚ฌ์šฉ

2022. 12. 13. 12:03
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ํฌ์ŠคํŒ… (6)๊นŒ์ง€ ์™„์„ฑํ–ˆ๋˜ ํ”„๋กœ์ ํŠธ๋Š” app.js ์•ˆ์—์„œ ์ฝ”๋“œ๊ฐ€ ๊ธธ๊ฒŒ ๋‚˜์—ด๋˜์–ด ์žˆ๋Š” ํ˜•์‹์ด์—ˆ๋‹ค.

๋…ธ๋“œ์˜ ๋ชจ๋“ˆ ์‹œ์Šคํ…œ์„ ํ™œ์šฉํ•ด์„œ requestHandler๋ฅผ ๋งŒ๋“ค์–ด๋‹ฌ๊ณ , app.js๋ฅผ ๊ฐ€๋ณ๊ฒŒ ๋ฐ”๊พธ์–ด๋ณธ๋‹ค.

 

app.js : ๋‹จ 4์ค„!

const http = require('http');
const routes = require('./routes');

const server = http.createServer(routes);

server.listen(3000);

routes.js : app.js์— ์ฃผ๋ ์ฃผ๋  ๋‹ฌ๋ ค์žˆ๋˜ ์‘๋‹ต, ์š”์ฒญ, ํŒŒ์ผ์‹œ์Šคํ…œ ๋กœ์ง์„ ์ „๋ถ€ ์˜ฎ๊ฒจ์ฃผ์—ˆ๋‹ค. 

module.exports = requestHandler; <- ๋งˆ์ง€๋ง‰ ์ค„์ธ ํ•ด๋‹น ๋ผ์ธ์ด ์ค‘์š”!

requestHandler๋ฅผ ๋‚ด๋ณด๋‚ธ ๊ฒƒ์ด๋‹ค.

const fs = require('fs');

const requestHandler = (req, res) => {
	const url = req.url;
	const method = req.method;
	if (url === '/') {
		res.write('<html>');
		res.write('<head><title>My First Page</title></head>');
		res.write(
			'<body><form action="/message" method="POST"><input type="text" name="message"><button = "submit">Send</button></form></body>');
		res.write('</html>');
		return res.end();
	}
	if (url === '/message' && method === 'POST') {
		const body = [];
		req.on('data', (chunk) => {
			console.log(chunk);
			body.push(chunk);
		});
		req.on('end', () => {
			const parsedBody = Buffer.concat(body).toString();
			console.log(parsedBody);
			const message = parsedBody.split('=')[1];
			console.log(message);
			fs.writeFileSync('message.txt', message);
		});
		res.statusCode = 302;
		res.setHeader('Location', '/')
		return res.end();
	}
	res.setHeader('Content-Type', 'text/html');
	res.write('<html>');
	res.write('<head><title>My First Page</title></head>');
	res.write('<body><h1>Hello from my Node.js Server!</h1></body>');
	res.write('</html>');
	res.end('Hello Node');
}

module.exports = requestHandler;

 

 

Node.js ๋ชจ๋“ˆ ์‹œ์Šคํ…œ์—์„œ ํ•œ๊ฐ€์ง€ ์ค‘์š”ํ•œ ์ ์€

ํŒŒ์ผ ๋‚ด์šฉ์˜ ์บ์‹œ๊ฐ€ ์ €์žฅ๋˜๊ณ  ์™ธ๋ถ€์—์„œ๋Š” ์ˆ˜์ •ํ•  ์ˆ˜ ์—†๋‹ค๋Š” ๊ฒƒ์ด๋‹ค.

์™ธ๋ถ€์—์„œ ์ฝ์„ ์ˆ˜ ์žˆ๋Š” ๋‚ด์šฉ๋งŒ ๋‚ด๋ณด๋‚ด๊ธฐ ํ•  ์ˆ˜ ์žˆ๋‹ค.

 

 

module.exports = requestHandler; ๋Œ€์‹ ์— ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ๊ตฌ๋ฌธ์ด ํ•˜๋‚˜ ๋” ์žˆ๋‹ค.

๊ฐ€๋” ์—ฌ๋Ÿฌ ๋‚ด์šฉ์„ ํ•œ๊บผ๋ฒˆ์— ๋‚ด๋ณด๋‚ด๊ธฐ ํ•˜๋Š” ๊ฒฝ์šฐ,

์•„๋ž˜์™€ ๊ฐ™์ด ๊ฐ์ฒด๋กœ ๋ฌถ์–ด์„œ ํ•˜๋‚˜์˜ ๋‚ด๋ณด๋‚ด๊ธฐ๋งŒ ๊ด€๋ฆฌํ•  ์ˆ˜ ์žˆ๊ฒŒ ๋œ๋‹ค.

module.exports = {
	handler: requestHandler,
	someText : 'Some hard coded text'
};

 

๊ทธ๋Ÿฌ๋ฉด app.js์—์„œ๋Š” ์•„๋ž˜์™€ ๊ฐ™์ด ๋Œ€์‘ํ•ด์ฃผ๋ฉด ๋œ๋‹ค.

const http = require('http');
const routes = require('./routes');

const server = http.createServer(routes.handler);

server.listen(3000);

์ด๋ ‡๊ฒŒ ํ•˜๋ฉด ํ•˜๋‚˜์˜ ํŒŒ์ผ์—์„œ ์—ฌ๋Ÿฌ ๋‚ด๋ณด๋‚ด๊ธฐ๋ฅผ ํ•  ์ˆ˜ ์žˆ๋‹ค.

 

 

์•„๋ž˜์™€ ๊ฐ™์ด ์ž‘์„ฑํ•  ์ˆ˜๋„ ์žˆ๋‹ค.

module.exports.handler = requestHandler;
module.exports.someText = 'Some hard coded text';

 

์ฆ‰ ๋ชจ๋“  ๋‚ด๋ณด๋‚ด๊ธฐ๋ฅผ ๋ฌถ๋Š” module.exports๊ฐ€ ์žˆ๊ณ 

์†์„ฑ์„ ์ง€์ •ํ–ˆ๊ธฐ ๋•Œ๋ฌธ์— ์‚ฌ์‹ค์ƒ ์ฐจ์ด๋Š” ์—†๋‹ค.

 

๊ทธ๋Ÿฌ๋‚˜ ์‚ฌ์‹ค์€ module.์„ ์ƒ๋žตํ•˜์—ฌ ์•„๋ž˜์™€ ๊ฐ™์ด ์จ๋„ ์ƒ๊ด€์—†๋‹ค.

exports.handler = requestHandler;
exports.someText = 'Some hard coded text';

Node.js์— ์˜ํ•ด ํŠน๋ณ„ํžˆ ์ง€์ •๋œ ๋‹จ์ถ•ํ‚ค์ด๋ฏ€๋กœ...

 

์ง€๊ธˆ๊นŒ์ง€ ๋ถˆ๋Ÿฌ์˜ค๊ธฐ ๋ฐ ๋‚ด๋ณด๋‚ด๊ธฐ์™€ ๋ชจ๋“ˆ ์‹œ์Šคํ…œ์˜ ์›๋ฆฌ์— ๋Œ€ํ•ด ์•Œ์•„๋ณด์•˜๋‹ค. 

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