middleware

catDataMocking/src/app.ts

@@ -8,11 +8,35 @@ 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) => {
-  console.log(req);
   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}`);
 });