main.go

package main

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

type Person struct {
	Name string
	Age  int
}

func handler(w http.ResponseWriter, r *http.Request) {
	eve := Person{Name: "Eve", Age: 33}
	buf, err := json.Marshal(eve)
	if err != nil {
		panic(err)
	}
	w.Write(buf)
}

func main() {
	http.HandleFunc("/", handler)
	fmt.Println("hello, we're listening on 5000")
	http.ListenAndServe(":5000", nil)
}