Spring Boot实训项目 瑞吉外卖功能实现（三）

1. @PutMapping("/edit")
2. 
3.     public R<String> update(@RequestBody DishDto dishDto) {
4. 
5.         // 更新dish表
6. 
7.         dishService.updateById(dishDto);
8. 
9.         // 清理当前菜品口味信息，dish_flavor表的delete操作
10. 
11.         // 不能使用removeById， 因为dishDto的id不是dish_flavor的主键
12. 
13.         LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
14. 
15.         queryWrapper.eq(DishFlavor::getDishId, dishDto.getId());
16. 
17.         dishFlavorService.remove(queryWrapper);
18. 
19.         // 重新插入菜品口味信息，dish_flavor表的insert操作
20. 
21.         List<DishFlavor> dishFlavor = new ArrayList<>();
22. 
23.         for (DishFlavor item :dishDto.getFlavors()) {
24. 
25.             item.setDishId(dishDto.getId());
26. 
27.             dishFlavor.add(item);
28. 
29.         }
30. 
31.         dishFlavorService.saveBatch(dishFlavor);
32. 
33.         return R.success("修改成功");
34. 
35.     }

1. @PostMapping("/sub")
2. 
3.     public R<String> sub(@RequestBody ShoppingCart shoppingCart, HttpSession session) {
4. 
5.         // 1.获取当前用户
6. 
7.         User user = (User) session.getAttribute("employee");
8. 
9.         // 2.查询当前用户、当前商品在购物车表里是否已存在
10. 
11.         LambdaQueryWrapper<ShoppingCart> lambdaQueryWrapper = new LambdaQueryWrapper<>();
12. 
13.         lambdaQueryWrapper.eq(ShoppingCart::getUserId, user.getId())  // 筛选用户ID
14. 
15.                 .eq(shoppingCart.getDishId() != null, ShoppingCart::getDishId, shoppingCart.getDishId())  // 如果传入的商品ID不为空，筛选商品ID
16. 
17.                 .eq(shoppingCart.getSetmealId() != null, ShoppingCart::getSetmealId, shoppingCart.getSetmealId());  // 如果传入的套餐ID不为空，筛选套餐ID
18. 
19.         ShoppingCart shoppingCart1 = shoppingCartService.getOne(lambdaQueryWrapper);  // 返回符合条件的购物车记录
20. 
21.         int shoppingCartNumber = shoppingCart1.getNumber();
22. 
23.         try {
24. 
25.             if (shoppingCartNumber > 1) {  // 如果记录的数量大于1，则减少数量
26. 
27.                 shoppingCartNumber = shoppingCart1.getNumber() - 1;  // 记录的数量减1
28. 
29.                 shoppingCart1.setNumber(shoppingCartNumber);  // 更新记录的数量
30. 
31.                 shoppingCartService.updateById(shoppingCart1);  // 更新购物车记录
32. 
33.             } else {  // 如果记录的数量为1，则删除该记录
34. 
35.                 shoppingCartService.removeById(shoppingCart1.getId());
36. 
37.             }
38. 
39.         } catch (Exception e) {
40. 
41.             return R.error("删除失败");
42. 
43.         }
44. 
45.         return R.success("删除成功");
46. 
47.     }

1. @PutMapping
2. 
3.     public R<String> addressBookupdate(@RequestBody AddressBook addressBook, HttpSession session){
4. 
5.         //设置修改时间
6. 
7.         addressBook.setUpdateTime(LocalDateTime.now());
8. 
9.         //设置修改人
10. 
11.         addressBook.setUpdateUser((Long)session.getAttribute("user"));
12. 
13.         addressBookService.updateById(addressBook);
14. 
15.         return R.success("修改地址成功！");
16. 
17.     }
18. 
19.     @DeleteMapping
20. 
21.     public R<String> detele(@RequestParam("ids") Long id){
22. 
23.         addressBookService.removeById(id);
24. 
25.         return R.success("删除地址成功！");
26. 
27.     }