mybatis-plus

与吴聪聪老师的tk.mybatis类似,insert时,不需要手写返回主键id,controller层insert的商品就有了数据库对应的id

// 添加商品
    @PostMapping("/upload")
    public String upload(Product product, @RequestParam("imgs") CommonsMultipartFile img, HttpServletRequest req)
            throws IllegalStateException, IOException {
        String uuid = UUID.randomUUID().toString();
        String uploadDire = PropertiesUtil.getkey("upload.dir");// 文件存放的路径
        // System.out.println("uploadDire=" + uploadDire);
        String productimg = uuid + "-" + img.getOriginalFilename();
        // System.out.println("productimg=" + productimg);
        String imgdest = uploadDire + productimg;
        // System.out.println("imgdesrt=" + imgdest);
        img.transferTo(new File(imgdest));
        product.setImg(productimg);
        product.setCreatetime(new Date());
        String token = super.getCookieVal(req, "token");
        System.out.println("token=" + token);
        // 根据request拿到当前userid
        SysUser sysUser = JwtUtils.getObject(token, SysUser.class);
        System.out.println("sysUser.id=" + sysUser.getId());
        product.setUserid(sysUser.getId());
        int i = productService.insertProduct(product);// 添加商品
        System.out.println("商品添加返回的id" + product.getId());
        //为每一个insert的商品开辟一个room
        Room room = new Room();
        room.setCreatetime(product.getCreatetime());
        room.setEndtime(product.getEndtime());
        room.setProductid(product.getId());
        room.setState(1);
        roomService.insertRoom(room);
        System.out.println("room添加返回的id" + room.getId());
        return "redirect:/moon/Product/selectProductByid?id=" + product.getId();
    }

public int insertRoom(Room room) {
        return roomMapper.insert(room);
    }
// 修改
    public int updateProduct(Product product) {
        return productMapper.updateByPrimaryKey(product);
    }