230612 Nodejs http모듈로 서버 만들어보기

230612 Nodejs http모듈로 페이지 만들어보기

 

nodejs http 서버 열기

http 서버 만들기

const http = require("http");
const port = 3000;

const server = http.createServer((req, res) => {
  res.writeHead(200, { "Content-Type": "text/html" });
  res.end('server is open');
});

server.listen(port, () => {
  console.log(`Server running at port ${port}`);
});

 

'/' 경로로 들어왔을 때 응답 보내기

const http = require("http");
const port = 3000;

const server = http.createServer((req, res) => {
  const url = req.url;
  if (url === "/") {
    fs.readFile('index.html', "utf8", (err, data) => {
      if (err) {
        res.end("404 error");
      } else {
        res.writeHead(200, { "Content-Type": "text/html" });
        res.end(data);
      }
    });
  } else {
    res.end('server is open');
  }
});

server.listen(port, () => {
  console.log(`Server running at port ${port}`);
});

 

json으로 api 응답 보내기

const http = require("http");
const port = 3000;

const db = {
  users: {
    0: { id: 0, name: "Yeong Seulgi", age: 20 },
    1: { id: 1, name: "Seong Hwan", age: 24 },
    2: { id: 2, name: "Chu Chun-Hei", age: 34 },
    3: { id: 3, name: "Cha He-Ran", age: 12 },
    4: { id: 4, name: "Mun Young", age: 38 },
  },
};

const server = http.createServer((req, res) => {
	const url = req.url;
    if (req.method === "GET" && req.url === "/api/users") {
        res.setHeader("Content-Type", "application/json");
        res.end(JSON.stringify(db.users));
    } else {
    	res.end('server is open');
    }
});

server.listen(port, () => {
  console.log(`Server running at port ${port}`);
});

 

없는 경로 접근 시 리디렉션하기

res.writeHead(301, { Location: "/404" });
res.end();

const http = require("http");
const port = 3000;

const server = http.createServer((req, res) => {
	const url = req.url;
    if (url === "/") {
      fs.readFile('index.html', "utf8", (err, data) => {
        if (err) {
          res.end("404 error");
        } else {
          res.writeHead(200, { "Content-Type": "text/html" });
          res.end(data);
        }
      });
    } else {
      res.writeHead(301, {
        Location: "/404",
      });
      res.end();
    }
});

server.listen(port, () => {
  console.log(`Server running at port ${port}`);
});

 

 

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HTTP 트랜잭션 해부 | Node.js

 

HTTP | Node.js v6.17.1 Documentation

 

Node.js HTTP Module