Routing + Frontend Integration

1app.get("/api/users/:id", ctx -> {
2    String id = ctx.pathParam("id");
3    ctx.json(java.util.Map.of("id", id, "name", "Demo User"));
4});
5
6app.post("/api/users", ctx -> {
7    CreateUserReq req = ctx.body(CreateUserReq.class);
8    if (req == null || req.getEmail() == null) {
9        ctx.status(400).json(java.util.Map.of("error", "email is required"));
10        return;
11    }
12    ctx.status(201).json(java.util.Map.of("message", "created"));
13});

1app.post("/api/items/:id", ctx -> {
2    String id = ctx.pathParam("id");
3    String auth = ctx.header("Authorization");
4    ItemReq req = ctx.body(ItemReq.class);
5
6    if (req == null) {
7        ctx.status(400).json(java.util.Map.of("error", "body required"));
8        return;
9    }
10
11    ctx.header("X-Request-Id", "abc-123");
12    ctx.status(200).json(java.util.Map.of(
13        "id", id,
14        "authorized", auth != null,
15        "name", req.getName()
16    ));
17});

1const base = "https://your-api-domain";
2
3export async function fetchTasks(token) {
4  const res = await fetch(base + "/api/tasks/", {
5    method: "GET",
6    headers: {
7      "Content-Type": "application/json",
8      "Authorization": "Bearer " + token
9    }
10  });
11
12  if (!res.ok) {
13    const err = await res.json();
14    throw new Error(err.error || "Request failed");
15  }
16
17  return res.json();
18}