java 反射通過get方法獲得屬性值

2019-11-06 06:53:50

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1、根據(jù)對象獲得所有字段的值public static void method(Object obj) { try { Class clazz = obj.getClass(); Field[] fields = obj.getClass().getDeclaredFields();//獲得屬性 for (Field field : fields) { PRopertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz); Method getMethod = pd.getReadMethod();//獲得get方法 Object o = getMethod.invoke(obj);//執(zhí)行g(shù)et方法返回一個Object System.out.println(o); } } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IntrospectionException e) { e.printStackTrace(); } catch (Illegal accessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); }}2、通過對象和具體的字段名字獲得字段的值public static void method(Object obj, String filed) { try { Class clazz = obj.getClass(); PropertyDescriptor pd = new PropertyDescriptor(filed, clazz); Method getMethod = pd.getReadMethod();//獲得get方法 if (pd != null) { Object o = getMethod.invoke(obj);//執(zhí)行g(shù)et方法返回一個Object System.out.println(o); } } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IntrospectionException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); }}

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