java 對象和map的相互轉換

class C { 

   

    public static Object mapToObject(Map<String, Object> map, Class<?> beanClass) throws Exception {   

        if (map == null) 

            return null;   

   

        Object obj = beanClass.newInstance(); 

   

        Field[] fields = obj.getClass().getDeclaredFields();  

        for (Field field : fields) {   

            int mod = field.getModifiers();   

            if(Modifier.isStatic(mod) || Modifier.isFinal(mod)){   

                continue;   

            }   

   

            field.setAccessible(true);   

            field.set(obj, map.get(field.getName()));  

        }  

   

        return obj;   

    }   

   

    public static Map<String, Object> objectToMap(Object obj) throws Exception {   

        if(obj == null){   

            return null;   

        }  

   

        Map<String, Object> map = new HashMap<String, Object>();   

   

        Field[] declaredFields = obj.getClass().getDeclaredFields();   

        for (Field field : declaredFields) {   

            field.setAccessible(true); 

            map.put(field.getName(), field.get(obj)); 

        }   

   

        return map; 

    }  

}