golang 中解决前端time 输出，后端mongodb中时间存储。

  1. package mask
  3. import (
  4.     "fmt"
  5.     "time"
  7.     "go.mongodb.org/mongo-driver/bson"
  8.     "go.mongodb.org/mongo-driver/bson/bsontype"
  9. )
  11. // Timestamp extension time
  12. type Timestamp struct {
  13.     Time time.Time
  14. }
  16. const (
  17.     jsonLayout = "2006-01-02 15:04:05"
  18. )
  20. // Now returns the current local time.
  21. func Now() Timestamp {
  22.     return Timestamp{
  23.         Time: time.Now(),
  24.     }
  25. }
  27. // UnmarshalBSON unmarshal bson
  28. func (t *Timestamp) UnmarshalBSON(data []byte) (err error) {
  29.     var d bson.D
  30.     err = bson.Unmarshal(data, &d)
  31.     if err != nil {
  32.         return err
  33.     }
  34.     if v, ok := d.Map()["t"]; ok {
  35.         t.Time = time.Time{}
  36.         return t.Time.UnmarshalText([]byte(v.(string)))
  37.     }
  38.     return fmt.Errorf("key 't' missing")
  39. }
  41. // MarshalBSON marshal bson
  42. func (t Timestamp) MarshalBSON() ([]byte, error) {
  43.     txt, err := t.Time.MarshalText()
  44.     if err != nil {
  45.         return nil, err
  46.     }
  47.     b, err := bson.Marshal(map[string]string{"t": string(txt)})
  48.     return b, err
  49. }
  51. // MarshalBSONValue marshal bson value
  52. func (t *Timestamp) MarshalBSONValue() (bsontype.Type, []byte, error) {
  53.     fmt.Println(t)
  54.     b, err := bson.Marshal(t)
  55.     return bson.TypeEmbeddedDocument, b, err
  56. }
  58. // UnmarshalJSON unmarshal json
  59. func (t *Timestamp) UnmarshalJSON(data []byte) (err error) {
  60.     if len(data) == 0 || string(data) == "" || string(data) == `""` {
  61.         return
  62.     }
  63.     now, err := time.ParseInLocation(`"`+jsonLayout+`"`, string(data), time.Local)
  64.     *t = Timestamp{
  65.         Time: now,
  66.     }
  67.     return
  68. }
  70. // MarshalJSON marshal json
  71. func (t Timestamp) MarshalJSON() ([]byte, error) {
  73.     b := make([]byte, 0, len(jsonLayout)+2)
  74.     b = append(b, '"')
  75.     b = time.Time(t.Time).AppendFormat(b, jsonLayout)
  76.     b = append(b, '"')
  77.     return b, nil
  78. }

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