java 使用反射獲取屬性名，和值

 Class<?> aClass = xxx實體類.getClass();
        //得到屬性
        Field field = null;
        try {
            field = aClass.getDeclaredField("字段名xxxx");
            //打開私有訪問
            field.setAccessible(true);
            //獲取屬性
            String name = field.getName();
            //獲取屬性值
            String subjectType = (String) field.get(xxx實體類);
            System.out.println(subjectType);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }