开发外包--golang熟练之json相互转换（三）

package main

import (
	"encoding/json"
	"fmt"
)

func main() {
	// 2、初始化结构体
	s := Student{
		Id:      1,
		Name:    "zhangpeng",
		Address: "shenzhen",
		Age:     24,
	}
	//fmt.Printf("%T %#v", s, s)
	//s1, _ := json.Marshal(s)
	//fmt.Println(string(s1))
	//fmt.Println("从这里开始是内存地址", s1)

	// 3、讲结构体转化为json
	sByte, err := json.Marshal(s)
	if err != nil {
		fmt.Println("json.Marshal err,", err)
	}
	fmt.Println("这是json格式：", string(sByte))
	fmt.Println("byte类型数据：", sByte)
}

// 1、定义结构体
type Student struct {
	Id      int
	Name    string
	Address string
	Age     int
}

C:\Users\Administrator\AppData\Local\Temp\GoLand\___go_build_struct_json_go.exe
这是json格式： {"Id":1,"Name":"zhangpeng","Address":"shenzhen","Age":24}
byte类型数据： [123 34 73 100 34 58 49 44 34 78 97 109 101 34 58 34 122 104 97 110 1 50 52 125]

Process finished with the exit code 0

package main

import (
	"encoding/json"
	"fmt"
)

// 1、定义结构体
type Student2 struct {
	Id      int
	Name    string
	Address string
	Age     int
}

func main() {
	// 2、将json字符串转换成结构团体
	var jS = `{"Id":1,"Name":"zhangpeng","Address":"shenzhen","Age":24}`

	// 初始化结构体
	var s Student2

	// 将string类型的数据转换为一个[]byte类型数据
	byteS := []byte(jS)

	// err := json.Unmarshal([]byte(jS), &s)
	err := json.Unmarshal(byteS, &s)
	if err != nil {
		fmt.Printf("Unmarshal err%v\n", err)
	}
	fmt.Println(s.Id, s.Name, s.Address, s.Age)
	fmt.Println(s)
}



1 zhangpeng shenzhen 24
{1 zhangpeng shenzhen 24}

Process finished with the exit code 0