从数据源查出来到结构体,还需要映射返回输出,不想那么麻烦。试试这个包:
https://github.com/chenhg5/jsonmap
只需要在结构体的tag声明即可:
```
package main
import (
"encoding/json"
"fmt"
"github.com/chenhg5/jsonmap"
)
func main() {
var text = `{
"type": "cow"
}`
type Animal struct {
Type uint8 `json:"type" jsonmap:"0:dog;1:cat;2:cow;3:others"`
}
var animal = new(Animal)
_ = json.Unmarshal([]byte(text), jsonmap.Wrap(animal))
fmt.Printf("%+v\n", animal)
// &Animal{Type: 2}
res, _ := json.MarshalIndent(jsonmap.Wrap(animal), "", " ")
fmt.Println(string(res))
// {"type": "cow"}
}
```
dddd.
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