parse JSON request

README.md

Simple demo of how to decode JSON data coming from an http POST request.

Run the server with go run server.go and then make a curl request:

. post.sh

... or ...

curl -d @- http://localhost:8080/user
{
  "name": {
    "first": "Bob",
    "last":  "Jones"
  }
}
# CTRL-D

You should get back:

Hi Bob Jones!

---

For more about JSON and Go, see this blog post, or this example code.

post.sh

#!/bin/sh

curl -d '{"name": {"first": "Bob", "last": "Jones"}}' http://localhost:8080/user

server.go

package main

import (
    "fmt"
    "net/http"
    "encoding/json"
)
 
type Person struct {
    Name struct {
        First string `json:"first"`
        Last string `json:"last"`
    } `json:"name"`
}
 
func parse(w http.ResponseWriter, r *http.Request) {
    dec := json.NewDecoder(r.Body)
    var p Person
    err := dec.Decode(&p)
    if err != nil {
        panic(err)
    }
    fmt.Fprintf(w, "Hi %s %s!\n", p.Name.First, p.Name.Last)
}
 
func main() {
    http.HandleFunc("/user", parse)
    http.ListenAndServe(":8080", nil)
}