Go HTTP POST request JSON data

package main

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

func main() {

    values := map[string]string{"name": "John Doe", "occupation": "gardener"}
    json_data, err := json.Marshal(values)

    if err != nil {
        log.Fatal(err)
    }

    resp, err := http.Post("https://httpbin.org/post", "application/json",
        bytes.NewBuffer(json_data))

    if err != nil {
        log.Fatal(err)
    }

    defer resp.Body.Close()

    var res map[string]interface{}

    json.NewDecoder(resp.Body).Decode(&res)

    fmt.Println(res["json"])
}

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