golang中map结构转换成json

package main

import (
"encoding/json"
"fmt"
)

func main() {
  m := make(map[string]interface{}, 4)
  m["name"] = "wilson"
  m["lang"] = []string{"go", "python", "java"}
  m["isok"] = true
  m["price"] = 5.55

  result, err := json.Marshal(m)
  if err != nil {
    return
  }
  fmt.Println("result = ", string(result))
}