详解Json序列化在golang中的应用

下面由golang教程栏目给大家详解Json序列化在golang中的应用 ，希望对需要的朋友有所帮助！

ns/opallocation bytesallocation timesstd decode35510 ns/op1960 B/op99 allocs/opeasyjson decode8499 ns/op160 B/op4 allocs/opjsoniter decode5623 ns/op160 B/op3 allocs/opstd encode2213 ns/op712 B/op5 allocs/opeasyjson encode883 ns/op576 B/op3 allocs/opjsoniter encode837 ns/op384 B/op4 allocs/op

编码案例

type Hero struct {
    Name string
    Age int
    Birthday string
    Sal float64
    Skill string}

序列化

hero := Hero{
    Name:     "小王",
    Age:      20,
    Birthday: "2021-02-23",
    Sal:      88.02,
    Skill:    "技能",}jsonStu, err := json.Marshalif err != nil {
    fmt.Println("生成json字}fmt.Println(string(jsonStu))

反序列化

结构体 struct

str := "{\"Name\":\"张三丰\",\"Age\":98,\"Birthday\":\"2001-09-21\",\"Sal\":3800.85,\"Skill\":\"武当剑法\"}"
var hero Hero
err := json.Unmarshal([]byte(str), &hero)
if err != nil {
fmt.Printf("unmarshal err=%v\n", err)
}

结构体数组

俩种方式，一种直接反序列化成 结构体数组，另一种反序列化为 slice，内容为map[string]interface{}

结构体数组

str := `[{"Name":"张三丰","Age":98,"Birthday":"2001-09-21","Sal":3800.85,"Skill":"武当剑法"},{"Name":"张无忌","Age":28,"Birthday":"2004-09-21","Sal":300.85,"Skill":"乾坤大挪移"}]`

var hero []Hero
err := json.Unmarshal([]byte(str), &hero)
if err != nil {
fmt.Printf("unmarshal err=%v\n", err)
}
fmt.Printf("反序列化后 hero=%v", hero)

slice

str := `[{"Name":"张三丰","Age":98,"Birthday":"2001-09-21","Sal":3800.85,"Skill":"武当剑法"},{"Name":"张无忌","Age":28,"Birthday":"2004-09-21","Sal":300.85,"Skill":"乾坤大挪移"}]`

//定义一个slice
var slice []map[string]interface{}
//注意：反序列化map,不需要make，因为make操作被封装到Unmarshal函数
err := json.Unmarshal([]byte(str), &slice)
if err != nil {
fmt.Printf("unmarshal err=%v\n", err)
}
fmt.Printf("反序列化后 slice=%v\n", slice)

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