Go语言反射：如何动态地将空接口转换为任意类型？

<code class="go">package main

import "reflect"

type Person struct {
    Name string
    Age  int
}

func dynamicConvert(a interface{}, targetType reflect.Type) (interface{}, error) {
    valueOfA := reflect.ValueOf(a)
    if valueOfA.Kind() != reflect.Struct {
        return nil, reflect.TypeOf(a).Kind().String() + " is not a struct"
    }

    newInstance := reflect.New(targetType).Elem()
    for i := 0; i < valueOfA.NumField(); i++ {
        fieldValue := valueOfA.Field(i)
        field := targetType.Field(i)

        if fieldValue.Type().AssignableTo(field.Type) {
            newInstance.Field(i).Set(fieldValue)
        } else {
            return nil, "Type mismatch for field: " + field.Name
        }
    }

    return newInstance.Interface(), nil
}


func main() {
    p1 := Person{Name: "Alice", Age: 30}
    targetType := reflect.TypeOf(p1)

    converted, err := dynamicConvert(p1, targetType)
    if err != nil {
        println("Error:", err)
    } else {
        println("Converted:", converted)
    }
}
</code>