java 반사 복사 속성 값

 1 /**  sourceObj targetObj 

 2      * @param sourceObj 

 3      * @param targetObj 

 4      * @param clazz  ( sourceObj :Object->User->ChineseUser->ChineseMan->ChineseChongQingMan) 

 5      *  ChineseUser ，clazz ChineseUser.class 

 6      */  

 7     public static void cpoyObjAttr(Object sourceObj, Object targetObj, Class<?> clazz)throws Exception

 8     {  

 9         if(sourceObj==null || targetObj==null)

10         {  

11             throw new Exception(" null");  

12         }  

13         Field[] fields=clazz.getDeclaredFields();  

14         for(int i = 0; i < fields.length; i++)

15         {

16             //System.out.println(fields[i].getName());

17             //Object sourceValue=fields[i].get(sourceObj);  

18             

19             Method getMethod = sourceObj.getClass().getMethod("get" + fields[i].getName());

20             Object sourceValue = (Object) getMethod.invoke(sourceObj, null);

21             if(null==sourceValue)

22             {

23                 sourceValue = null;

24             }            

25             fields[i].setAccessible(true);          

26             fields[i].set(targetObj,sourceValue);

27            

28 //            System.out.println(fields[i].getName()+";"+clazz+";"+fields[i].getType());            

29 //            Method setMethod = targetObj.getClass().getMethod("set" +fields[i].getName(), fields[i].getType());

30 //            setMethod.invoke(targetObj, sourceValue.toString());

31         }  

32         if(clazz.getSuperclass()==Object.class){  

33             return;  

34         }         

35         cpoyObjAttr(sourceObj,targetObj,clazz.getSuperclass());             

36     }