111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
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/*
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* @Author : huangzj
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* @Time : 2020/3/27 15:38
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* @Description：
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*/
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package example
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import (
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"encoding/json"
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"fmt"
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"time"
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)
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type Time time.Time
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const (
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timeFormart = "2006-01-02 15:04:05"
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)
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//-------------------结构体----------------
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type Person struct {
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Id int64 `json:"id"`
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Name string `json:"name"`
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Birthday Time `json:"birthday"`
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}
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type json1 struct {
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Name string `json:"name"` //测试一下别名
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Value string `json:"value,-"` //测试一下,有别名也有 - 能被转换
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Value1 string `json:"-"` //测试一下,只有 - 能被转换
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method1 string `json:"method1"` //测试一下私有属性不能被转换
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Now time.Time `json:"now"` //测试一下时间字段可否被转换
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Now1 Time `json:"now1"` //自定义时间转换的格式
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Age int `json:",omitempty"` //测试一下 omitempty 值为空不能被转换
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AgeString string `json:",omitempty"` //测试一下字符串 omitempty 值为空 不能被转换
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Length int `json:",String"` //测试一下tag里面带有string的自动转换
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Person Person //测试一下多级的结构
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}
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//-----------------------------------------示例方法
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/*
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* 测试序列化功能
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*/
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func JsonMarshalTest() {
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j := json1{
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Name: "name",
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Value: "value",
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Value1: "value1",
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method1: "method1",
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Now: time.Now(),
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Now1: Time(time.Now()),
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Age: 0,
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Length: 24,
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Person: Person{
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Id: 123,
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Name: "xxxx",
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Birthday: Time(time.Now()),
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},
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}
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b, err := json.Marshal(j)
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if err != nil {
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panic(err.Error())
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}
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fmt.Print(string(b))
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}
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/*
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* 测试序列化功能
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*/
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func JsonUnmarshalTest() {
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src := `{"id":5,"name":"xiaoming","birthday":"2016-06-30 16:09:51"}`
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p := new(Person)
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err := json.Unmarshal([]byte(src), &p)
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var m map[string]interface{}
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_ = json.Unmarshal([]byte(src), &m)
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if err != nil {
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panic(err.Error())
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}
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}
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//-------------------------接口实现
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//实现该方法，实现对应的时间处理，json应该是没有支持时间处理的
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func (t *Time) UnmarshalJSON(data []byte) (err error) {
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now, err := time.ParseInLocation(`"`+timeFormart+`"`, string(data), time.Local)
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*t = Time(now)
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return
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}
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/*
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* 实现该方法，确定时间格式的输出
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*/
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func (t Time) MarshalJSON() ([]byte, error) {
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b := make([]byte, 0, len(timeFormart)+2)
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b = append(b, '"')
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b = time.Time(t).AppendFormat(b, timeFormart)
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b = append(b, '"')
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return b, nil
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}
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func (t Time) String() string {
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return time.Time(t).Format(timeFormart)
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}
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