/**

     * @param src

     * @param dest

     * @param filedMapping the diffrent fieldName  mapping,key is src filename and value is dest filedname

     */

    public <S, T> void copyProperties(S src, T dest, Map<String, String> filedMapping) {

        BeanUtils.copyProperties(src, dest);

        Class sClass = src.getClass();

        Class tClass = dest.getClass();

        Set<Map.Entry<String, String>> mappingSet = filedMapping.entrySet();

        for (Map.Entry<String, String> en : mappingSet) {

            String srcFiledName = en.getKey();

            String destFiledName = en.getValue();

            try {

                Field srcFiled = sClass.getDeclaredField(srcFiledName);

                Field destFiled = tClass.getDeclaredField(destFiledName);

                srcFiled.setAccessible(true);

                destFiled.setAccessible(true);

                Object value = srcFiled.get(src);

                destFiled.set(dest, value);

            } catch (IllegalAccessException e) {

                e.printStackTrace();

            } catch (NoSuchFieldException e) {

                // igonre the not found field error

            }

        }

    }