文章目录
前言
为了巩固所学的知识,作者尝试着开始发布一些学习笔记类的博客,方便日后回顾。当然,如果能帮到一些萌新进行新技术的学习那也是极好的。作者菜菜一枚,文章中如果有记录错误,欢迎读者朋友们批评指正。
(博客的参考源码可以在我主页的资源里找到,如果在学习的过程中有什么疑问欢迎大家在评论区向我提出)
一、 导入用户地址簿相关功能代码
1. 需求分析
地址簿,指的是移动端消费者用户的地址信息,用户登录成功后可以维护自己的地址信息。同一个用户可以有多个地址信息,但是只能有一个默认地址
2. 数据模型
用户的地址信息会存储在address book表,即地址簿表中。具体表结构如下
3. 编写功能代码
- 实体类 AddressBook
/**
* 地址簿
*/
@Data
public class AddressBook implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
//用户id
private Long userId;
//收货人
private String consignee;
//手机号
private String phone;
//性别 0 女 1 男
private String sex;
//省级区划编号
private String provinceCode;
//省级名称
private String provinceName;
//市级区划编号
private String cityCode;
//市级名称
private String cityName;
//区级区划编号
private String districtCode;
//区级名称
private String districtName;
//详细地址
private String detail;
//标签
private String label;
//是否默认 0 否 1是
private Integer isDefault;
//创建时间
@TableField(fill = FieldFill.INSERT)
private LocalDateTime createTime;
//更新时间
@TableField(fill = FieldFill.INSERT_UPDATE)
private LocalDateTime updateTime;
//创建人
@TableField(fill = FieldFill.INSERT)
private Long createUser;
//修改人
@TableField(fill = FieldFill.INSERT_UPDATE)
private Long updateUser;
//是否删除
private Integer isDeleted;
}
- Mapper接口 AddressBookMapper
@Mapper
public interface AddressBookMapper extends BaseMapper<AddressBook> {
}
- 业务层接口 AddressBookService
public interface AddressBookService extends IService<AddressBook> {
}
- 业务层实现类 AddressBookServicelmpl
@Service
public class AddressBookServiceImpl extends ServiceImpl<AddressBookMapper, AddressBook> implements AddressBookService {
}
- 控制层 AddressBookController
/**
* 地址簿管理
*/
@Slf4j
@RestController
@RequestMapping("/addressBook")
public class AddressBookController {
@Autowired
private AddressBookService addressBookService;
/**
* 新增
*/
@PostMapping
public R<AddressBook> save(@RequestBody AddressBook addressBook) {
addressBook.setUserId(BaseContext.getCurrentId());
log.info("addressBook:{}", addressBook);
addressBookService.save(addressBook);
return R.success(addressBook);
}
/**
* 设置默认地址
*/
@PutMapping("default")
public R<AddressBook> setDefault(@RequestBody AddressBook addressBook) {
log.info("addressBook:{}", addressBook);
LambdaUpdateWrapper<AddressBook> wrapper = new LambdaUpdateWrapper<>();
wrapper.eq(AddressBook::getUserId, BaseContext.getCurrentId());
wrapper.set(AddressBook::getIsDefault, 0);
//SQL:update address_book set is_default = 0 where user_id = ?
addressBookService.update(wrapper);
addressBook.setIsDefault(1);
//SQL:update address_book set is_default = 1 where id = ?
addressBookService.updateById(addressBook);
return R.success(addressBook);
}
/**
* 根据id查询地址
*/
@GetMapping("/{id}")
public R get(@PathVariable Long id) {
AddressBook addressBook = addressBookService.getById(id);
if (addressBook != null) {
return R.success(addressBook);
} else {
return R.error("没有找到该对象");
}
}
/**
* 查询默认地址
*/
@GetMapping("default")
public R<AddressBook> getDefault() {
LambdaQueryWrapper<AddressBook> queryWrapper = new LambdaQueryWrapper<>();
queryWrapper.eq(AddressBook::getUserId, BaseContext.getCurrentId());
queryWrapper.eq(AddressBook::getIsDefault, 1);
//SQL:select * from address_book where user_id = ? and is_default = 1
AddressBook addressBook = addressBookService.getOne(queryWrapper);
if (null == addressBook) {
return R.error("没有找到该对象");
} else {
return R.success(addressBook);
}
}
/**
* 查询指定用户的全部地址
*/
@GetMapping("/list")
public R<List<AddressBook>> list(AddressBook addressBook) {
addressBook.setUserId(BaseContext.getCurrentId());
log.info("addressBook:{}", addressBook);
//条件构造器
LambdaQueryWrapper<AddressBook> queryWrapper = new LambdaQueryWrapper<>();
queryWrapper.eq(null != addressBook.getUserId(), AddressBook::getUserId, addressBook.getUserId());
queryWrapper.orderByDesc(AddressBook::getUpdateTime);
//SQL:select * from address_book where user_id = ? order by update_time desc
return R.success(addressBookService.list(queryWrapper));
}
}
4. 功能测试
二、菜品展示
1. 需求分析
用户登录成功后跳转到系统首页,在首页需要根据分类来展示菜品和套餐。如果菜品设置了口味信息,需要展示【选择规格】 按钮,否则显示【+】 按钮
2. 代码开发
1. 在开发代码之前,需要梳理一下前端页面和服务端的交互过程
- 页面(front/index.html)发送ajax请求,获取分类数据(菜品分类和套餐分类)
- 页面发送aiax请求,获取第一个分类下的菜品或者套餐开发菜品展示功能,其实就是在服务端编写代码去处理前端页面发送的这2次请求即可
- 注意 :首页加载完成后,还发送了一次ajax请求用于加载购物车数据,此处可以将这次请求的地址暂时修改一下,从静态json文件获取数据,等后续开发购物车功能时再修改回来,如下
2. 前端相关代码分析
3. DishController 中编写相关的方法
@GetMapping("/list")
public R<List<DishDto>> list(Dish dish){
//构造查询条件
LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());
//添加条件,查询状态为1(起售状态)的菜品
queryWrapper.eq(Dish::getStatus,1);
//添加排序条件
queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
List<Dish> list = dishService.list(queryWrapper);
List<DishDto> dishDtoList = list.stream().map((item) -> {
DishDto dishDto = new DishDto();
BeanUtils.copyProperties(item,dishDto);
Long categoryId = item.getCategoryId();//分类id
//根据id查询分类对象
Category category = categoryService.getById(categoryId);
if(category != null){
String categoryName = category.getName();
dishDto.setCategoryName(categoryName);
}
//当前菜品的id
Long dishId = item.getId();
LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
//SQL:select * from dish_flavor where dish_id = ?
List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
dishDto.setFlavors(dishFlavorList);
return dishDto;
}).collect(Collectors.toList());
return R.success(dishDtoList);
}
3. 功能测试
三、 购物车
1. 需求分析
移动端用户可以将菜品或者套餐添加到购物车。对于菜品来说,如果设置了口味信息,则需要选择规格后才能加入购物车;对于套餐来说,可以直接点击【+】将当前套餐加入购物车。在购物车中可以修改菜品和套餐的数量也可以清空购物车
2. 数据模型
购物车对应的数据表为shopping_cart表,具体表结构如下
3. 代码开发
1. 在开发代码之前,需要梳理一下购物车操作时前端页面和服务端的交互过程
- 点击加入购物车或者· 按钮,页面发送ajax请求,请求服务端,将菜品或者套餐添加到购物车
- 点击购物车图粽,页面发送ajax请求,请求服务端查询购物车中的菜品和套餐
- 点击清空购物车按钮,页面发送ajax请求,请求服务端来执行清空购物车操作
- 开发购物车功能,其实就是在服务端编写代码去处理前端页面发送的这3次请求即可
2. 前端相关页面分析
3. 在开发业务功能前,先将需要用到的类和接口基本结构创建好
- 实体类 shoppingCart
/**
* 购物车
*/
@Data
public class ShoppingCart implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
//名称
private String name;
//用户id
private Long userId;
//菜品id
private Long dishId;
//套餐id
private Long setmealId;
//口味
private String dishFlavor;
//数量
private Integer number;
//金额
private BigDecimal amount;
//图片
private String image;
private LocalDateTime createTime;
}
- Mapper接口 ShoppingCartMapper
@Mapper
public interface ShoppingCartMapper extends BaseMapper<ShoppingCart> {
}
- 业务层接口 shoppingCartService
public interface ShoppingCartService extends IService<ShoppingCart> {
}
- 业务层实现类 ShoppingCartServicelmpl
@Service
public class ShoppingCartServiceImpl extends ServiceImpl<ShoppingCartMapper, ShoppingCart> implements ShoppingCartService {
}
- 控制层 shoppingCartController
@RestController
@RequestMapping("/setmeal")
@Slf4j
public class SetmealController {
@Autowired
private SetmealService setmealService;
@Autowired
private CategoryService categoryService;
@Autowired
private SetmealDishService setmealDishService;
/**
* 新增套餐
* @param setmealDto
* @return
*/
@PostMapping
public R<String> save(@RequestBody SetmealDto setmealDto){
log.info("套餐信息:{}",setmealDto);
setmealService.saveWithDish(setmealDto);
return R.success("新增套餐成功");
}
/**
* 套餐分页查询
* @param page
* @param pageSize
* @param name
* @return
*/
@GetMapping("/page")
public R<Page> page(int page,int pageSize,String name){
//分页构造器对象
Page<Setmeal> pageInfo = new Page<>(page,pageSize);
Page<SetmealDto> dtoPage = new Page<>();
LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
//添加查询条件,根据name进行like模糊查询
queryWrapper.like(name != null,Setmeal::getName,name);
//添加排序条件,根据更新时间降序排列
queryWrapper.orderByDesc(Setmeal::getUpdateTime);
setmealService.page(pageInfo,queryWrapper);
//对象拷贝
BeanUtils.copyProperties(pageInfo,dtoPage,"records");
List<Setmeal> records = pageInfo.getRecords();
List<SetmealDto> list = records.stream().map((item) -> {
SetmealDto setmealDto = new SetmealDto();
//对象拷贝
BeanUtils.copyProperties(item,setmealDto);
//分类id
Long categoryId = item.getCategoryId();
//根据分类id查询分类对象
Category category = categoryService.getById(categoryId);
if(category != null){
//分类名称
String categoryName = category.getName();
setmealDto.setCategoryName(categoryName);
}
return setmealDto;
}).collect(Collectors.toList());
dtoPage.setRecords(list);
return R.success(dtoPage);
}
/**
* 删除套餐
* @param ids
* @return
*/
@DeleteMapping
public R<String> delete(@RequestParam List<Long> ids){
log.info("ids:{}",ids);
setmealService.removeWithDish(ids);
return R.success("套餐数据删除成功");
}
/**
* 根据条件查询套餐数据
* @param setmeal
* @return
*/
@GetMapping("/list")
public R<List<Setmeal>> list(Setmeal setmeal){
LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
queryWrapper.eq(setmeal.getCategoryId() != null,Setmeal::getCategoryId,setmeal.getCategoryId());
queryWrapper.eq(setmeal.getStatus() != null,Setmeal::getStatus,setmeal.getStatus());
queryWrapper.orderByDesc(Setmeal::getUpdateTime);
List<Setmeal> list = setmealService.list(queryWrapper);
return R.success(list);
}
}
4. 功能测试
四、 下单
1. 需求分析
移动端用户将菜品或者套餐加入购物车后,可以点击购物车中的【去结算】按钮,页面跳转到订单确认页面,击【去支付】击去支付则完成下单操作
2. 数据模型
- 订单表的具体表结构如下
- 订单明细表的具体表结构如下
3. 代码开发
1. 在开发代码之前,需要梳理一下用户下单操作时前端页面和服务端的交互过程
1、在购物车中点击【去结算】按钮,页面跳转到订单确认页面
2、在订单确认页面发送ajax请求,请求服务端获取当前登录用户的默认地址
3、在订单确认页面,发送ajax请求,请求服务端获取当前登录用户的购物车数据
4、在订单确认页面点击【去支付】按钮,发送aiax请求,请求服务端完成下单操作云收相
5. 开发用户下单功能,其实就是在服务端编写代码去处理前端页面发送的请求即可
- 在开发业务功能前,先将需要用到的类和接口基本结构创建好:
- 实体类 Orders、OrderDetail
/**
* 订单
*/
@Data
public class Orders implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
//订单号
private String number;
//订单状态 1待付款,2待派送,3已派送,4已完成,5已取消
private Integer status;
//下单用户id
private Long userId;
//地址id
private Long addressBookId;
//下单时间
private LocalDateTime orderTime;
//结账时间
private LocalDateTime checkoutTime;
//支付方式 1微信,2支付宝
private Integer payMethod;
//实收金额
private BigDecimal amount;
//备注
private String remark;
//用户名
private String userName;
//手机号
private String phone;
//地址
private String address;
//收货人
private String consignee;
}
/**
* 订单明细
*/
@Data
public class OrderDetail implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
//名称
private String name;
//订单id
private Long orderId;
//菜品id
private Long dishId;
//套餐id
private Long setmealId;
//口味
private String dishFlavor;
//数量
private Integer number;
//金额
private BigDecimal amount;
//图片
private String image;
}
- Mapper接口 OrderMapper、OrderDetailMapper
@Mapper
public interface OrderMapper extends BaseMapper<Orders> {
}
@Mapper
public interface OrderDetailMapper extends BaseMapper<OrderDetail> {
}
- 业务层接口 OrderService、OrderDetailService
public interface OrderService extends IService<Orders> {
/**
* 用户下单
* @param orders
*/
public void submit(Orders orders);
}
public interface OrderDetailService extends IService<OrderDetail> {
}
- 业务层实现类 OrderServicelmpl、OrderDetailServicelmpl
@Service
@Slf4j
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
@Autowired
private ShoppingCartService shoppingCartService;
@Autowired
private UserService userService;
@Autowired
private AddressBookService addressBookService;
@Autowired
private OrderDetailService orderDetailService;
/**
* 用户下单
* @param orders
*/
@Transactional
public void submit(Orders orders) {
//获得当前用户id
Long userId = BaseContext.getCurrentId();
//查询当前用户的购物车数据
LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
wrapper.eq(ShoppingCart::getUserId,userId);
List<ShoppingCart> shoppingCarts = shoppingCartService.list(wrapper);
if(shoppingCarts == null || shoppingCarts.size() == 0){
throw new CustomException("购物车为空,不能下单");
}
//查询用户数据
User user = userService.getById(userId);
//查询地址数据
Long addressBookId = orders.getAddressBookId();
AddressBook addressBook = addressBookService.getById(addressBookId);
if(addressBook == null){
throw new CustomException("用户地址信息有误,不能下单");
}
long orderId = IdWorker.getId();//订单号
AtomicInteger amount = new AtomicInteger(0);
List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
OrderDetail orderDetail = new OrderDetail();
orderDetail.setOrderId(orderId);
orderDetail.setNumber(item.getNumber());
orderDetail.setDishFlavor(item.getDishFlavor());
orderDetail.setDishId(item.getDishId());
orderDetail.setSetmealId(item.getSetmealId());
orderDetail.setName(item.getName());
orderDetail.setImage(item.getImage());
orderDetail.setAmount(item.getAmount());
amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
return orderDetail;
}).collect(Collectors.toList());
orders.setId(orderId);
orders.setOrderTime(LocalDateTime.now());
orders.setCheckoutTime(LocalDateTime.now());
orders.setStatus(2);
orders.setAmount(new BigDecimal(amount.get()));//总金额
orders.setUserId(userId);
orders.setNumber(String.valueOf(orderId));
orders.setUserName(user.getName());
orders.setConsignee(addressBook.getConsignee());
orders.setPhone(addressBook.getPhone());
orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
+ (addressBook.getCityName() == null ? "" : addressBook.getCityName())
+ (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
+ (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
//向订单表插入数据,一条数据
this.save(orders);
//向订单明细表插入数据,多条数据
orderDetailService.saveBatch(orderDetails);
//清空购物车数据
shoppingCartService.remove(wrapper);
}
}
@Service
public class OrderDetailServiceImpl extends ServiceImpl<OrderDetailMapper, OrderDetail> implements OrderDetailService {
}
- 控制层 OrderController、OrderDetailController
/**
* 订单
*/
@Slf4j
@RestController
@RequestMapping("/order")
public class OrderController {
@Autowired
private OrderService orderService;
/**
* 用户下单
* @param orders
* @return
*/
@PostMapping("/submit")
public R<String> submit(@RequestBody Orders orders){
log.info("订单数据:{}",orders);
orderService.submit(orders);
return R.success("下单成功");
}
}
/**
* 订单明细
*/
@Slf4j
@RestController
@RequestMapping("/orderDetail")
public class OrderDetailController {
@Autowired
private OrderDetailService orderDetailService;
}
4. 功能测试
总结
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(博客的参考源码可以在我主页的资源里找到,如果在学习的过程中有什么疑问欢迎大家在评论区向我提出)
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