Golang Reflex Reflect

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Reflect reflection, can be reflected by reflect the properties and methods contained in the structure, and then make some assignment and method calls, flexibility is higher

package myimport (    ft "fmt"    "reflect")type User struct {    Id   int    Name string}func (user User) Print() {    ft.Println("reflect Print()")}func Reflect(inter interface{}) {    t := reflect.TypeOf(inter) //从接口中获取结构的类型    if k:=t.Kind();k!=reflect.Struct{//判断传入的是否是struce类型,而不是指针类型*User,指针类型报错        ft.Println("type is not true")        return    }    ft.Println("类型名称:", t.Name())    v := reflect.ValueOf(inter) //从接口中获取结构的值    for i := 0; i < t.NumField(); i++ { //遍历所包含的属性字段        f := t.Field(i) //获取到字段        val := v.Field(i).Interface()        ft.Println("字段签名:", f.Type, " 字段名称:", f.Name, "  值:", val)    }    for i := 0; i < t.NumMethod(); i++ { //遍历所绑定的方法        m := t.Method(i) //获取到方法        ft.Println("方法名称:", m.Name, " 方法签名:", m.Type)    }}

• Reflection of structure nesting

 Package Myimport (FT "FMT" "reflect") type User struct {Id int Name string Info}type Info struct { Age Int}func (User user) Print (name string) {ft. Println ("Reflect Print ()", name)}func reflect (inter interface{}) {t: = reflect. TypeOf (inter)//Gets the type of structure from the interface V: = reflect. ValueOf (inter)//Gets the value of the structure from the interface if t.kind () = = reflect. Ptr && V.elem (). Canset () {///is passed in a pointer that can be modified by V = V.elem () if f: = V.kind (); f = = reflect. struct {//If the field property is struct if x: = V.fieldbyname ("Age"); X.isvalid () {x.setint (888)} If f: = V.fieldbyname ("Name"); F.kind () = = reflect. String && F.isvalid () {f.setstring ("haha")} if f: = V.fieldbyname ("Id"); F.kind () = = reflect. Int && F.isvalid () {f.setint ()} if f: = V.methodbyname ("Print"); F.isvalid () {args: = []reflect. Value{reflect. ValueOf ("Test")} f.call (args)}}} 

  Package Mainimport (f "FMT" "com.guo/mytest/something") func main () {r:=something. User{1, "haha", something. info{100, "Guangzhou"}} something. Reflect (&r) something. Reflect (R) f.println ("Modified result:", R)}