Go 通用结构体赋值
package main
import (
"errors"
"fmt"
"reflect"
)
type cat struct{
Name string
Age int
}
type mouse struct {
name string
color string
}
func main() {
tomcat := &cat{}
fillBySettings(tomcat,map[string]interface{}{
"Name":"tom",
"Age":6,
})
fmt.Println(tomcat)
defer func() {
if err := recover(); err != nil {
fmt.Println(err)
}
}()
func() {
jerrymouse := &mouse{}
fillBySettings(jerrymouse,map[string]interface{}{
"name":"tom",
"color":"cyan",
})
fmt.Println(jerrymouse)
}()
}
func fillBySettings(structPtr interface{}, settings map[string]interface{})error{
if reflect.TypeOf(structPtr).Kind() != reflect.Ptr {
return errors.New("the first param is not a pointer")
}
if settings == nil {
return errors.New("settings is nil")
}
var (
field reflect.StructField
ok bool
)
for k, v := range settings {
if field, ok = (reflect.ValueOf(structPtr)).Elem().Type().FieldByName(k); !ok {
continue
}
if field.Type == reflect.TypeOf(v) {
reflect.ValueOf(structPtr).Elem().FieldByName(k).Set(reflect.ValueOf(v))
}
}
return nil
}