golang json反序列化

package main

import (
	"encoding/json"
	"fmt"
	"reflect"
)

type js struct {
	Name string `json:"name"`
	Age  int    `json:"age"`
}

func stru() string {
	var j = js{
		Name: "zhangsan",
		Age:  19,
	}

	s, _ := json.Marshal(j)
	return string(s)
}

func unmap() map[string]interface{} {

	var type1 map[string]interface{}

	var map1 = map[string]interface{}{
		"Name":  "zhangsan",
		"age":   19,
		"intro": "hello my name is zhangsan",
	}

	json1, err := json.Marshal(map1)

	err = json.Unmarshal([]byte(string(json1)), &type1)

	if err != nil {
		fmt.Println("test json fail: ", err)
	}

	return type1
}

func unstruct() js {
	var json1 js
	j := stru()

	err := json.Unmarshal([]byte(j), &json1)

	if err != nil {
		fmt.Println("test json fail: ", err)
	}

	return json1
}

func main() {
	// s := stru()

	// fmt.Println(s)

	um := unmap()
	us := unstruct()

	fmt.Println("um type is: ", reflect.TypeOf(um))
	fmt.Println("us type is: ", reflect.TypeOf(us))

}