1.保存宠物信息代码

	/**
     * 保存宠物信息
     * @param petDTO
     * @return
     */
    @Override
    public ResponseDTO<Boolean> savePet(PetDTO petDTO) {
        // 进行统一表单验证
        CodeMsg validate = ValidateEntityUtil.validate(petDTO);
        if (!validate.getCode().equals(CodeMsg.SUCCESS.getCode())) {
            return ResponseDTO.errorByMsg(validate);
        }
        Pet pet = CopyUtil.copy(petDTO, Pet.class);
        if(CommonUtil.isEmpty(pet.getId())) {
            // 添加操作
            pet.setId(UuidUtil.getShortUuid());
            pet.setCreateTime(new Date());
            pet.setState(PetStateEnum.WAIT.getCode());
            batchInsertPicture(petDTO.getPhotoList(), pet.getId());
            if(petMapper.insertSelective(pet) == 0) {
                return ResponseDTO.errorByMsg(CodeMsg.PET_ADD_ERROR);
            }
        } else {
            // 修改操作
            pet.setState(Optional.ofNullable(pet.getState()).orElse(PetStateEnum.WAIT.getCode()));
            PictureExample pictureExample = new PictureExample();
            pictureExample.createCriteria().andRefIdEqualTo(pet.getId());
            pictureMapper.deleteByExample(pictureExample);
            batchInsertPicture(petDTO.getPhotoList(), pet.getId());
            if(petMapper.updateByPrimaryKeySelective(pet) == 0) {
                return ResponseDTO.errorByMsg(CodeMsg.PET_EDIT_ERROR);
            }
        }
        return ResponseDTO.successByMsg(true, "保存成功！");
    }

2.提交订单信息代码

	/**
     * 提交订单信息
     * @param orderDTO
     * @return
     */
    @Override
    public ResponseDTO<Boolean> submitOrder(OrderDTO orderDTO) {
        // 进行统一表单验证
        CodeMsg validate = ValidateEntityUtil.validate(orderDTO);
        if (!validate.getCode().equals(CodeMsg.SUCCESS.getCode())) {
            return ResponseDTO.errorByMsg(validate);
        }
        Order order = CopyUtil.copy(orderDTO, Order.class);
        Pet pet = petMapper.selectByPrimaryKey(order.getPetId());
        if(pet.getUserId().equals(order.getUserId())) {
            return ResponseDTO.errorByMsg(CodeMsg.ORDER_REPEAT_ERROR);
        }
        if(!PetStateEnum.SUCCESS.getCode().equals(pet.getState())) {
            return ResponseDTO.errorByMsg(CodeMsg.ORDER_PET_STATE_ERROR);
        }
        Category category = categoryMapper.selectByPrimaryKey(pet.getCategoryId());
        order.setCategoryName(Optional.ofNullable(category.getName()).orElse(""));
        Plate plate = plateMapper.selectByPrimaryKey(pet.getPlateId());
        order.setPlateName(Optional.ofNullable(plate.getName()).orElse(""));
        order.setId(UuidUtil.getShortUuid());
        order.setTotalPrice(pet.getPrice());
        order.setPetName(pet.getName());
        order.setPetInfo(pet.getInfo());
        PictureExample pictureExample = new PictureExample();
        pictureExample.createCriteria().andTypeEqualTo(PictureTypeEnum.PET.getCode()).andRefIdEqualTo(pet.getId());
        pictureExample.setOrderByClause("sort asc");
        List<Picture> pictureList = pictureMapper.selectByExample(pictureExample);
        if(pictureList.size() > 0) {
            order.setPetPhoto(pictureList.get(0).getPhoto());
        }
        order.setSellerId(pet.getUserId());
        order.setCreateTime(new Date());
        if(orderMapper.insertSelective(order) == 0) {
            return ResponseDTO.errorByMsg(CodeMsg.ORDER_ADD_ERROR);
        }
        pet.setState(PetStateEnum.SELL.getCode());
        petMapper.updateByPrimaryKeySelective(pet);
        return ResponseDTO.successByMsg(true, "下单成功！");
    }

3.查询评论信息代码

	/**
     * 查询评论信息
     * @param commentDTO
     * @return
     */
    @Override
    public ResponseDTO<List<CommentDTO>> getCommentList(CommentDTO commentDTO) {
        CommentExample commentExample = new CommentExample();
        CommentExample.Criteria criteria = commentExample.createCriteria();
        int total = 0;
        if(!CommonUtil.isEmpty(commentDTO.getPostId())) {
            criteria.andPostIdEqualTo(commentDTO.getPostId());
            total = commentMapper.countByExample(commentExample);
        }
        // 先查所有父级评论
        criteria.andParentIdEqualTo("");
        commentExample.setOrderByClause("create_time desc");
        List<Comment> commentList = commentMapper.selectByExample(commentExample);
        List<CommentDTO> commentDTOList = CopyUtil.copyList(commentList, CommentDTO.class);
        for(CommentDTO comment : commentDTOList) {
            User user = userMapper.selectByPrimaryKey(comment.getUserId());
            comment.setUserDTO(CopyUtil.copy(user, UserDTO.class));
            // 查询子评论
            CommentExample childCommentExample = new CommentExample();
            childCommentExample.createCriteria().andParentIdEqualTo(comment.getId());
            childCommentExample.setOrderByClause("create_time desc");
            List<Comment> childCommentList = commentMapper.selectByExample(childCommentExample);
            // 查询子评论
            List<CommentDTO> childCommentDTOList = CopyUtil.copyList(childCommentList, CommentDTO.class);
            for(CommentDTO childComment : childCommentDTOList) {
                childComment.setUserDTO(CopyUtil.copy(userMapper.selectByPrimaryKey(childComment.getUserId()), UserDTO.class));
                childComment.setReplyUserDTO(CopyUtil.copy(userMapper.selectByPrimaryKey(childComment.getReplyId()), UserDTO.class));
            }
            comment.setChildCommentDTOList(childCommentDTOList);
        }

        return ResponseDTO.successByMsg(commentDTOList, String.valueOf(total));
    }