jsonデータを構造体に変換

2541 ワード

package main

import (
	"encoding/json"
	"fmt"
)

type IT1 struct {
	Company string `json:"company"`
	Subjects []string `json:"subjects"`
	IsOk bool  	`json:"isok"`
	Price float64 `json:"price"`
}

type IT2 struct {
	Company string `json:"company"`

}

func main(){
	jsonbuff :=`{
	"company": "zhczGO",
	"isok": true,
	"price": 99,
	"subjects": [
		"go",
		"fabric",
		"python",
		"Test"
	]
}`

var temp IT1
err :=json.Unmarshal([]byte(jsonbuff),&temp)
if err != nil{
	fmt.Println("err=",err)
	return
}
//fmt.Println("temp=",temp)
fmt.Printf("tmp=%+v
",temp) var temp2 IT2 err = json.Unmarshal([]byte(jsonbuff),&temp2) if err != nil{ fmt.Println("err=",err) return } fmt.Printf("tmp2=%+v
",temp2) }

  
package main

import (
	"encoding/json"
	"fmt"
)

func main()  {
	jsonbuff :=`{
	"company": "zhczGO",
	"isok": true,
	"price": 99,
	"subjects": [
		"go",
		"fabric",
		"python",
		"Test"
	]
}`

  //    map
  m := make(map[string]interface{},4)
  err := json.Unmarshal([]byte(jsonbuff),&m) //      

  if err != nil{
     fmt.Println("err=",err)
     return
  }
  fmt.Printf("m=%+v/n",m)

  //var str string
  //str = m["company"]//err     

  //    
	for key,value := range m  {
		switch data := value.(type) {
		case string:
			//str = data
			fmt.Printf("map[%s]     string,value=%s
",key,data) case bool: fmt.Printf("map[%s] bool,value=%v
",key,data) case float64: fmt.Printf("map[%s] float64,value=%f
",key,data) case []string: fmt.Printf("map[%s] []string,value=%v
",key,data) case []interface{}: fmt.Printf("map[%s] interface{},value=%v
",key,data) } } }