java 反射通过get方法获得属性值

2019-11-06 06:53:50

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1、根据对象获得所有字段的值public static void method(Object obj) { try { Class clazz = obj.getClass(); Field[] fields = obj.getClass().getDeclaredFields();//获得属性 for (Field field : fields) { PRopertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz); Method getMethod = pd.getReadMethod();//获得get方法 Object o = getMethod.invoke(obj);//执行get方法返回一个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、通过对象和具体的字段名字获得字段的值public static void method(Object obj, String filed) { try { Class clazz = obj.getClass(); PropertyDescriptor pd = new PropertyDescriptor(filed, clazz); Method getMethod = pd.getReadMethod();//获得get方法 if (pd != null) { Object o = getMethod.invoke(obj);//执行get方法返回一个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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