go json

import  "encoding/json"

type Message struct {
	Name string
	Body []string
	Time int64
	tel string  //not exported
}

m := Message{"jack", []string{"hello", "112"}, 1294706395881547000}
r, err := json.Marshal(m)
//r 是[]byte
//{"Name":"jack","Body":["hello","112"],"Time":1294706395881547000}

//结构中的属性自动new
m1 := Message{}
json.Unmarshal(r, &m1)
fmt.Println(m1)//{jack [hello 112] 1294706395881547000}

//结果用map[string]interface {}表示
var m2 interface{}
json.Unmarshal(r, &m2)
fmt.Println(m2) //map[Name:jack Body:[hello 112] Time:1.294706395881547e+18]