golang反射讀取結構體字段、反射執行結構體方法

package main


import (
    "fmt"
    "reflect"
)


func main() {
   tonydon := &User{"TangXiaodong", 100, "0000123"}
   object := reflect.ValueOf(tonydon)
   myref := object.Elem()
   typeOfType := myref.Type()
   for i:=0; i<myref.NumField(); i++{
       field := myref.Field(i)
       fmt.Printf("%d. %s %s = %v \n", i, typeOfType.Field(i).Name, field.Type(), field.Interface())
   }
   tonydon.SayHello()
   v := object.MethodByName("SayHello")
   v.Call([]reflect.Value{})
}

type User struct {
    Name string
    Age  int
    Id   string
}


func (u *User) SayHello() {
    fmt.Println("I'm " + u.Name + ", Id is " + u.Id + ". Nice to meet you! ")
}

編譯運行結果如下：

0. Name string = TangXiaodong 
1. Age int = 100
2. Id string = 0000123 
I'm TangXiaodong, Id is 0000123. Nice to meet you! 
I'm TangXiaodong, Id is 0000123. Nice to meet you!