java反射取private字段

Class clazz = bean.getClass();Field[] fields = clazz.getDeclaredFields();String sign = "";for (Field field : fields) {　　//設置能夠獲取私有字段    field.setAccessible(true);    String key = field.toString().substring(field.toString().lastIndexOf(".") + 1);    String value = (String) field.get(bean);    if (value == null) {        value = "";    }    //邏輯}