Go_Json序列化

package main
import (
	"fmt"
	"encoding/json"
)

//定义一个结构体
type Monster struct {
	Name string `json:"monster_name"` //反射机制
	Age int `json:"monster_age"`
	Birthday string
	Sal float64
	Skill string
}


func testStruct() {
	//演示
	monster := Monster{
		Name :"牛魔王",
		Age : 500 ,
		Birthday : "2011-11-11",
		Sal : 8000.0,
		Skill : "牛魔拳",
	}
	fmt.Println(monster.Name) //牛魔王

	//将monster序列化
	data, err := json.Marshal(&monster) //元帅;马萨克;马歇尔;列集;调度
	if err != nil {
		fmt.Printf("序列号错误 err=%v\n", err)
	}
	//输出序列化后的结果
	fmt.Printf("monster序列化后=%v\n", string(data))
	//monster序列化后={"monster_name":"牛魔王","monster_age":500,"Birthday":"2011-11-11","Sal":8000,"Skill":"牛魔拳"}
}

func main() {
	testStruct()

}

package main
import (
	"fmt"
	"encoding/json"
)


//将map进行序列化
func testMap() {
	//定义一个map
	var a map[string]interface{} //可以把任何类型的变量给空接口
	//使用map,需要make
	a = make(map[string]interface{})
	a["name"] = "红孩儿"
	a["age"] = 30
	a["address"] = "洪崖洞"

	//将a这个map进行序列化
	//将monster 序列化
	data, err := json.Marshal(a)
	if err != nil {
		fmt.Printf("序列化错误 err=%v\n", err)
	}
	//输出序列化后的结果
	fmt.Printf("a map 序列化后=%v\n", string(data))
	//a map 序列化后={"address":"洪崖洞","age":30,"name":"红孩儿"}
}


func main() {

	testMap()

}

package main
import (
	"fmt"
	"encoding/json"
)

//演示对切片进行序列化, 我们这个切片 []map[string]interface{}
func testSlice() {
	var slice []map[string]interface{} //可以把任何类型的变量给空接口
	var m1 map[string]interface{}
	//使用map前，需要先make
	m1 = make(map[string]interface{})
	m1["name"] = "jack"
	m1["age"] = "7"
	m1["address"] = "北京"
	slice = append(slice, m1)

	var m2 map[string]interface{}
	//使用map前，需要先make
	m2 = make(map[string]interface{})
	m2["name"] = "tom"
	m2["age"] = "20"
	m2["address"] = [2]string{"墨西哥","夏威夷"}
	slice = append(slice, m2)

	//将切片进行序列化操作
	data, err := json.Marshal(slice)
	if err != nil {
		fmt.Printf("序列化错误 err=%v\n", err)
	}
	//输出序列化后的结果
	fmt.Printf("slice 序列化后=%v\n", string(data))
	//slice 序列化后=[{"address":"北京","age":"7","name":"jack"},{"address":["墨西哥","夏威夷"],"age":"20","name":"tom"}]
}


func main() {

	testSlice()//演示对切片的序列化

}

package main
import (
	"fmt"
	"encoding/json"
)

//对基本数据类型序列化，对基本数据类型进行序列化意义不大（只是转成字符串而已）
func testFloat64() {
	var num1 float64 = 2345.67

	//对num1进行序列化
	data, err := json.Marshal(num1)
	if err != nil {
		fmt.Printf("序列化错误 err=%v\n", err)
	}
	//输出序列化后的结果
	fmt.Printf("num1 序列化后=%v\n", string(data))
	//num1 序列化后=2345.67
}

func main() {

	testFloat64()//演示对基本数据类型的序列化
}