Class1 f = sService.get(id);
        Class2 t = new Class2();

        try {
            BeanUtils.copyProperties(t,f);
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }　

//需要导commons-beanutils-1.8.3 包与 commons-logging-1.1.3 包