最终，我找到了一种方法。请遵循下面的Go Playground和代码段：
前往游乐场：避免硬编码类型声明
//new approach SetAttribute, without any hard pred type assertion, just based on objectType parameterfunc SetAttribute(myUnknownTypevalue *interface{}, attributeName string, attValue interface{}, objectType reflect.Type) { // create value for old val oldValue := reflect.ValueOf(*myUnknownTypevalue) //create a new value, based on type newValue := reflect.New(objectType).Elem() // set the old value to the new one, making the // implicit type assertion, not hard coding that. newValue.Set(oldValue) //set value attribute to the new struct, copy of the old one field := newValue.FieldByName(attributeName) valueForAtt := reflect.ValueOf(attValue) field.Set(valueForAtt) //capture the new value from reflect.Value newValInterface := newValue.Interface() //set the new value to the pointer *myUnknownTypevalue = newValInterface}
