NestJS_Basic/catDataMocking/src/app.ts

import * as express from "express";
import * as cors from "cors";

import { CatType, Cat } from "./app.model";

const app: express.Express = express();
const port: number = 8000;

app.use(cors());

// 전체 적용
app.use((req, res, next) => {
  console.log(req.rawHeaders[1]);
  next();
});

// 특정 REST 엔드포인트 적용
app.get("/cats/blue", (req, res) => {
  console.log("This is /cats/blue GET middleware");
});

app.get("/", (req: express.Request, res: express.Response) => {
  res.send({ cats: Cat });
});

app.get("/cats/blue", (req, res) => {
  res.send({ blue: Cat[0] });
});
app.get("/cats/som", (req, res) => {
  res.send({ som: Cat[1] });
});

// not found
app.use((req, res, next) => {
  console.log(req.rawHeaders[1]);
  console.log("This is 404 middleware");
  res.send({ error: "404 not found error" });
});

app.listen(port, () => {
  console.log(`server is on ${port}`);
});