各类型转 sturct
最后更新于：2022-04-02 02:36:48
[TOC]
## map 转 struct
## []string 转 struct ``` func SliceString2Struct(strs []string,t *T) { v := reflect.ValueOf(t).Elem() num := v.NumField() for i:=0; i
main.go
```
func setField(obj interface{}, key int, value interface{}) error {
structValue := reflect.ValueOf(obj).Elem()
structFieldValue := structValue.Field(key)
if !structFieldValue.IsValid() {
return fmt.Errorf("No such field: %v in obj", key)
}
if !structFieldValue.CanSet() {
return fmt.Errorf("Cannot set %v field value", key)
}
structFieldType := structFieldValue.Type()
val := reflect.ValueOf(value)
if structFieldType != val.Type() {
return errors.New("Provided value type didn't match obj field type")
}
structFieldValue.Set(val)
return nil
}
// []string 转 struct
func SilceStringToStruct(m []string,result interface{}) error {
if reflect.TypeOf(result).Kind() != reflect.Ptr {
panic("result 必须是指针")
}
for k, v := range m {
err := setField(result, k, v)
if err != nil {
return err
}
}
return nil
}
// []Interface{} 转 struct
func SilceInterfaceToStruct(m []interface{},result interface{}) error {
if reflect.TypeOf(result).Kind() != reflect.Ptr {
panic("result 必须是指针")
}
for k, v := range m {
err := setField(result, k, v)
if err != nil {
return err
}
}
return nil
}
func main() {
//[]map 换sturct
type MyStruct struct {
Name string
Age string
}
myData :=[]string{"cph","21"}
result := &MyStruct{}
if err := MapToStruct(myData,result);err != nil {
Println(err)
}
Println(result) // &{cph 21}
// []interface{} 转 sturct
type MyStruct struct {
Name string
Age int
}
myData :=[]interface{}{"cph",21}
result := &MyStruct{}
if err := SilceInterfaceToStruct(myData,result);err != nil {
log.Println(err)
}
log.Println(result.Age==21) // &{cph 21}
}
```
';
main.go
``` func SetField(obj interface{}, name string, value interface{}) error { structValue := reflect.ValueOf(obj).Elem() structFieldValue := structValue.FieldByName(name) if !structFieldValue.IsValid() { return fmt.Errorf("No such field: %s in obj", name) } if !structFieldValue.CanSet() { return fmt.Errorf("Cannot set %s field value", name) } structFieldType := structFieldValue.Type() val := reflect.ValueOf(value) if structFieldType != val.Type() { return errors.New("Provided value type didn't match obj field type") } structFieldValue.Set(val) return nil } func MapToStruct(m map[string]interface{},result interface{}) error { for k, v := range m { err := SetField(result, k, v) if err != nil { return err } } return nil } func main() { type MyStruct struct { Name string Age int64 } myData := make(map[string]interface{}) myData["Name"] = "Tony" myData["Age"] = int64(23) result := &MyStruct{} if err := MapToStruct(myData,result);err != nil { fmt.Println(err) } fmt.Println(result.Name) } ```## []string 转 struct ``` func SliceString2Struct(strs []string,t *T) { v := reflect.ValueOf(t).Elem() num := v.NumField() for i:=0; i