Golang 奇葩的时间包之Json与struct对象之间互相转换，JsonDate
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本篇在项目中实用性极强，推荐珍藏 package main import ( "encoding/json" "fmt" "time" ) type JsonDate time.Time type JsonTime time.Time func (p *JsonDate) UnmarshalJSON(data []byte) error { local,err := time.ParseInLocation(`"2006-01-02"`,string(data),time.Local) *p = JsonDate(local) return err } func (p *JsonTime) UnmarshalJSON(data []byte) error { local,err := time.ParseInLocation(`"2006-01-02 15:04:05"`,time.Local) *p = JsonTime(local) return err } func (c JsonDate) MarshalJSON() ([]byte,error) { data := make([]byte,0) data = append(data,'"') data = time.Time(c).AppendFormat(data,"2006-01-02") data = append(data,'"') return data,nil } func (c JsonTime) MarshalJSON() ([]byte,"2006-01-02 15:04:05") data = append(data,nil } func (c JsonDate) String() string { return time.Time(c).Format("2006-01-02") } func (c JsonTime) String() string { return time.Time(c).Format("2006-01-02 15:04:05") } func Todate(in string) (out time.Time,err error) { out,err = time.Parse("2006-01-02",in) return out,err } func Todatetime(in string) (out time.Time,err = time.Parse("2006-01-02 15:04:05",err } type Human struct { Id int64 `json:"id"` Name string `json:"name"` Birthday JsonTime `json:"birthday"` //注意：日期带时分秒这样的格式,日期部分yyyy-MM-dd不能使用带斜线的格式 } type Employee struct { Id int64 `json:"id"` Name string `json:"name"` Birthday JsonDate `json:"birthday"` //注意：日期格式yyyy-MM-dd,日期不能使用带斜线的格式 } func main() { now := JsonTime(time.Now()) fmt.Println("当前时间：",now) fmt.Println("========================================================================") Tom := `{"id":5,"name":"Tom","birthday":"2016-06-30 16:09:51"}` human := new(Human) //json使用struct对象来解码 ------ json转struct对象 err1 := json.Unmarshal([]byte(Tom),&human) if err1 != nil { fmt.Println(err1) } fmt.Println("json转struct对象: ",*human) fmt.Println("struct对象时间字段:",human.Birthday) fmt.Println(time.Time(human.Birthday)) fmt.Println("========================================================================") //struct对象使用json编码 ------ struct对象转json data1,_ := json.Marshal(human) fmt.Println("struct对象转json:",string(data1)) fmt.Println("nn") fmt.Println("***********************************************************************************************") fmt.Println("***********************************************************************************************") Jack := `{"id":8,"name":"Jack","birthday":"2016-06-30"}` employee := Employee{} //json使用struct对象来解码 ------ json转struct对象 err2 := json.Unmarshal([]byte(Jack),&employee) if err2 != nil { fmt.Println(err2) } fmt.Println("json转struct对象: ",employee) fmt.Println("struct对象时间字段:",employee.Birthday) fmt.Println(time.Time(employee.Birthday)) fmt.Println("========================================================================") //struct对象使用json编码 ------ struct对象转json data2,_ := json.Marshal(employee) fmt.Println("struct对象转json:",string(data2)) fmt.Println("nn") JsonData := `[{"id":15,"name":"Jason","birthday":"1986-06-14"},{"id":16,"name":"Tim","birthday":"1986-12-06"}]` var empList []Employee //定义一个切片 //json使用struct对象来解码 ------ json转struct对象 err3 := json.Unmarshal([]byte(JsonData),&empList) if err3 != nil { fmt.Println(err3) } fmt.Println("json转struct对象: ",empList) fmt.Println("struct对象时间字段:",empList[1].Birthday) fmt.Println(time.Time(empList[1].Birthday)) fmt.Println("========================================================================") employees := make([]Employee,0) //定义一个切片 var date time.Time var err4 error date,err4 = Todate("1986-06-14") //字符串转time.Time类型 if err4 != nil { fmt.Println(err4) return } jason := Employee{Id: 15,Name: "Jason",Birthday: JsonDate(date)} //Birthday: JsonDate(date),注意键值对赋值方式 date,err4 = Todate("1986-12-06") //字符串转time.Time类型 if err4 != nil { fmt.Println(err4) return } tim := Employee{Id: 16,Name: "Tim",Birthday: JsonDate(date)} employees = append(employees,jason) employees = append(employees,tim) //struct对象使用json编码 ------ struct对象转json data3,_ := json.Marshal(employees) fmt.Println("struct对象集合转json:",string(data3)) fmt.Println("nn") }
控制台打印输出： 2017/06/25 05:37:59 server.go:73: Using API v1 2017/06/25 05:37:59 debugger.go:97: launching process with args: [/root/code/go/src/contoso.org/hello/debug] API server listening at: 127.0.0.1:2345 2017/06/25 05:37:59 debugger.go:505: continuing 当前时间： 2017-06-25 05:37:59 ======================================================================== json转struct对象: {5 Tom 2016-06-30 16:09:51} struct对象时间字段: 2016-06-30 16:09:51 2016-06-30 16:09:51 +0800 CST ======================================================================== struct对象转json: {"id":5,"birthday":"2016-06-30 16:09:51"} *********************************************************************************************** *********************************************************************************************** json转struct对象: {8 Jack 2016-06-30} struct对象时间字段: 2016-06-30 2016-06-30 00:00:00 +0800 CST ======================================================================== struct对象转json: {"id":8,"birthday":"2016-06-30"} json转struct对象: [{15 Jason 1986-06-14} {16 Tim 1986-12-06}] struct对象时间字段: 1986-12-06 1986-12-06 00:00:00 +0800 CST ======================================================================== struct对象集合转json: [{"id":15,"birthday":"1986-12-06"}] （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |