protected Human createHuman(HumanEnum humanEnum) {
        Human human = null;
        // ݽһEnumоһElementĻ򲻴
        if (!humanEnum.getValue().equals("")) {
            try {
                // ֱӲһʵ
                human = (Human) Class.forName(humanEnum.getValue()).newInstance();
            } catch (Exception e) {
                // Ϊʹenum쳣ˣenum⣻
                e.printStackTrace();
            }
        }
        return human;
    }