json.Marshal

marshal_json.go

package main

import (
  "encoding/json"
  "fmt"
)

type person struct {
  First string
  Last  string
  Age   int
}

func main() {

  p1 := person{
    "James",
    "Bond",
    32}
  p2 := person{
    "Miss",
    "Moneypenny",
    27}

  people := []person{p1, p2}
  fmt.Printf("%T\n", people)

  bs, err := json.Marshal(people)
  if err != nil {
    fmt.Println(err)
  }
  fmt.Printf("%T\n", string(bs))
  fmt.Println(string(bs))
}

unmarshal_json.go

package main

import (
  "encoding/json"
  "fmt"
)

type person struct {
  First string `json:"First"`
  Last  string `json:"Last"`
  Age   int    `json:"Age"`
}

func main() {
  s := `[{"First":"James","Last":"Bond","Age":32},{"First":"Miss","Last":"Moneypenny","Age":27}]`
  bs := []byte(s)
  fmt.Printf("%T\n", s)
  fmt.Printf("%T\n", bs)

  var people []person

  err := json.Unmarshal(bs, &people)
//  fmt.Printf("%T\n", err)
  if err != nil {
    fmt.Println(err)
  }
  fmt.Println("\nall the data", people)

  for i, v := range people {
    fmt.Println("\nNUMBER", i)
    fmt.Println(v.First, v.Last, v.Age)
  }
}