求大神解救，一上午也沒有挑出來

impl中的代碼

?@Override
????@Transactional
????public?ItemModel?createItem(ItemModel?itemModel)?throws?BusinessException?{
//????????進(jìn)行入?yún)⑿ｒ?yàn)
????????ValidationResult?result=validator.validate(itemModel);
????????if?(result.isHasErrors()){
????????????throw?new?BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR,result.getErrorMsg());
????????}
//????????將ItemModel轉(zhuǎn)為Item(方法)
????????Item?item?=?convertItem(itemModel);
//將Item寫入數(shù)據(jù)庫?因?yàn)榕渲梦募性O(shè)置了keyProperty="id"?useGeneratedKeys="true"，所以這里獲得到了自增id
???????itemMapper.insertSelective(item);
//????????將id給itemmodel
????????itemModel.setId(item.getId());
????????System.out.println(itemModel+"service...");
//????????將ItemModel轉(zhuǎn)為Stock(方法)
????????Stock?stock?=?convertStock(itemModel);
//????????將Stock寫入數(shù)據(jù)庫
???????stockMapper.insertSelective(stock);
//????????返回創(chuàng)建完成的對象
????????return?itemDetailById(itemModel.getId());
????}

感覺xml文件沒啥問題，加了keyProperty和useGeneratedKeys