java 反射通过get方法获得属性值

java 反射通过get方法获得属性值

 来源：http://zgc168.iteye.com/blog/1633131

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 (IllegalAccessException 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();
     }
 }