package main
import (
"fmt"
"reflect"
)
type Monster struct {
Name string `json:"name"`
Age int `json:"monster_age"`
Score float32
Sex string
}
func (s Monster) Print() {
fmt.Println("--------start--------")
fmt.Println(s)
fmt.Println("--------end---------")
}
func (s Monster) GetSum(n1, n2 int) int {
return n1 + n2
}
func (s Monster) Set(name string, age int, score float32, sex string) {
s.Name = name
s.Age = age
s.Score = score
s.Sex = sex
}
func TestStruct(a interface{}) {
typ := reflect.TypeOf(a)
val := reflect.ValueOf(a)
kd := val.Kind()
if kd != reflect.Struct {
fmt.Println("except struct")
return
}
num := val.NumField()
fmt.Println("struct has field", num)
for i := 0; i < num; i++ {
fmt.Println("struct:", i, " field:", val.Field(i))
// 获取tag
tagVal := typ.Field(i).Tag.Get("json")
if tagVal != "" {
fmt.Println("struct:", i, " tag:", tagVal)
}
}
numOfMethod := val.NumMethod()
fmt.Println("struct method count:", numOfMethod)
val.Method(1).Call(nil)
// 调用结构体的第1个方法(按方法名称ASCII排序的)
var params []reflect.Value
params = append(params, reflect.ValueOf(10))
params = append(params, reflect.ValueOf(40))
res := val.Method(0).Call(params)
fmt.Println("call 0 result:", res[0].Int())
}
func main() {
var a Monster = Monster{
Name: "hhh",
Age: 400,
Score: 30.3,
}
TestStruct(a)
}