Error Handling

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

type Person struct {
    Name string
    Age  int
}

func main() {

	http.HandleFunc("POST /person", func(w http.ResponseWriter, r *http.Request) {
		var p Person
		if err := json.NewDecoder(r.Body).Decode(&p); err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		fmt.Fprintf(w, "Person: %+v", p)
	})

	if err := http.ListenAndServe(":3000", nil); err != nil {
		panic(err)
	}
}

$ curl localhost:3000/person -id "invalide body"
HTTP/1.1 400 Bad Request
Content-Type: text/plain; charset=utf-8
X-Content-Type-Options: nosniff
Date: Sat, 26 Oct 2024 05:24:40 GMT
Content-Length: 53

invalid character 'i' looking for beginning of value