Nodejs – json 으로 응답 샘플

const http = require('http');

const hostname = '127.0.0.1';
const port = 8080;

const courses = [{name:'HTML'},{name:'CSS'},{name:'Javascript'},{name:'Node'}];

const server = http.createServer((req,res)=>{
    const url = req.url; // what ?
    const method = req.method;  // how, action ?
    if(url === '/courses'){
        if(method === 'GET'){
            res.writeHead(200, {'Content-Type': 'application/json'});
            res.end(JSON.stringify(courses));
        }else if (method === 'POST'){
            const body = [];
            req.on('data', chunk=>{
                console.log(chunk);
                body.push(chunk);
            });

            req.on('end',()=>{
                const bodyStr = Buffer.concat(body).toString();
                console.log(bodyStr); //{"name":"test"}
                const course = JSON.parse(bodyStr);
                courses.push(course);
                console.log(course);
                res.writeHead(201);
                res.end();
            })
        }
    }
   
});
server.listen(port,hostname,()=>{
    console.log(`Server running at http://${hostname}:${port}`);
});