feat: 新增实验 7 的第 2 部分

Server/tests/test7/7.2/index.js

@@ -0,0 +1,30 @@
+const Koa = require("koa");
+const Router = require("@koa/router");
+
+const app = new Koa();
+const router = new Router();
+
+app.use(async (ctx, next) => {
+    ctx.set("Content-type", "application/json")
+    await next();
+})
+
+router.get("/", async (ctx) => {
+    ctx.body = "Welcome to theKoaServer!";
+})
+
+router.get("/about", async (ctx) => {
+    ctx.body = "This is the about page.";
+})
+
+router.get("/contact", (ctx) => {
+    ctx.body = "This is the contact page."
+})
+
+app.use(router.routes()).use(router.allowedMethods());
+
+const port = 3000;
+
+app.listen(port, () => {
+    console.log(`Server is running on http://localhost:${port}`);
+})