golang 动态创建 struct

引用

package main

import (
    "fmt"
    "reflect"

    "github.com/boringwork/godemo/class/stu"
)

var typeRegistry = make(map[string]reflect.Type)

func registerType(elem interface{}) {
    t := reflect.TypeOf(elem).Elem()
    typeRegistry[t.Name()] = t
    fmt.Println(t.PkgPath() + "/" + t.Name()) // echo github.com/boringwork/godemo/class/stu/Student
}

func newStruct(name string) (interface{}, bool) {
    elem, ok := typeRegistry[name]
    if !ok {
        return nil, false
    }
    return reflect.New(elem).Elem().Interface(), true
}

func init() {
    registerType((*test)(nil))
    registerType((*stu.Student)(nil))

}

type test struct {
    Name string
    Sex  int
}

type test2 struct {
    test
    age int
}

func main() {
    structName := "test2"

    s, ok := newStruct(structName)
    if !ok {
        fmt.Println("没有")
        return
    }

    fmt.Println(s, reflect.TypeOf(s))

    t, ok := s.(test2)
    if !ok {
        return
    }
    t.Name = "i am test"
    fmt.Println(t, reflect.TypeOf(t))
}