springboot3+vue3支付宝在线支付案例,后端接口-购物车

package com.example.demo.controller;

import com.example.demo.bean.Goods;
import com.example.demo.bean.Orders;
import com.example.demo.bean.Result;
import com.example.demo.service.IGoodsService;
import com.example.demo.service.IOrdersService;
import com.example.demo.util.CreateId;
import com.example.demo.util.GetSystemTime;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Collections;
import java.util.List;

@RestController
@RequestMapping("/order")
public class CartController {
    @Autowired
    private IGoodsService goodsService;
    @Autowired
    private IOrdersService ordersService;

    /**
     * 查询所有购物车的列表信息
     * @return
     */
    @GetMapping("/getAllorders")
    public Result> getAllOrder(){
        Result> result = new Result>();
        List allOrderList = ordersService.getAllOrders();
        if(allOrderList.size()>0){
            result.setCode(200);
            result.setMsg("查询购物车信息列表成功");
            result.setData(allOrderList);
            return result;
        }else{
            result.setCode(400);
            result.setMsg("查询失败，请稍后再试");
            return  result;
        }
    }


    /**
     * 根据产品的id，新增一条购物车信息
     * @param id
     * @return
     */
    @GetMapping("/addOneOrder")
    public Result> addOneOrder(Integer id){
        //创建一个唯一的订单id。正整数。
        Integer orderNo = CreateId.createId2();
        //创建回传对象。
        Result> result = new Result>();
        //根据id查询产品信息。
        List goods = goodsService.getOneGoodsById(Collections.singleton(id));
        String goodsName = goods.get(0).getName();
        Float goodsPrice = goods.get(0).getPrice();
        //封装order对象。
        Float total = Float.valueOf(goodsPrice);
        Orders orders = new Orders();
        orders.setOrderNo(orderNo);
        orders.setCreateUserId(1);
        orders.setGoodsName(goodsName);
        orders.setNumber(1);//默认数量是1.
        orders.setStatus(0);//默认状态是0。0:待支付,1:已支付
        orders.setTotal(total);//默认就是一个产品的单价。
        orders.setCreateTime(GetSystemTime.getDateTime());
        //调用业务层接口，新增一个订单信息。
        ordersService.addOneOrders(orders);
        result.setCode(200);
        result.setMsg("新增订单成功");
        return result;

    }
}

springboot3+vue3支付宝在线支付案例,后端接口-购物车！我定义了2个接口，一个是获取购物车列表信息，一个是新增一条购物车信息。

---

package com.example.demo.bean;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.aspectj.lang.annotation.AfterReturning;

import javax.persistence.*;
import java.sql.Timestamp;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table(name = "tb_orders")
public class Orders {
    @javax.persistence.Id
    @org.springframework.data.annotation.Id
    @GeneratedValue(strategy= GenerationType.IDENTITY)//主键生成策略
    @Column(name = "id", nullable = false)
    private Integer id;//主键
    @Column(name = "order_no",nullable = true)
    private Integer orderNo;//订单编号
    @Column(name = "goods_name",nullable = true)
    private String goodsName;//订单内商品名字
    private Integer number;//订单总数量
    private Float total;//订单金额
    @Column(name = "create_time")
    private Timestamp createTime;
    @Column(name = "modify_time")
    private Timestamp modifyTime;
    @Column(name = "create_user_id")
    private Integer createUserId;
    @Column(name = "modify_user_id")
    private Integer modifyUserId;
    private Integer payNo;//支付结算的编码
    @Column(name = "pay_time")
    private Timestamp payTime;//支付结算的时间戳
    private Integer status;//订单的状态，0-未结算，1-已结算。

}

这个就是购物车的实体类。

---

package com.example.demo.service;

import com.example.demo.bean.Orders;

import java.util.List;

/**
 * 订单的业务层接口
 */
public interface IOrdersService {
    //获取所有的订单
    public List getAllOrders();

    //根据id查询某一个订单信息
    public Orders getOneOrdersById(Integer id);

    //删除指定id的订单
    public void deleteOneOrdersById(Integer id);

    //更新指定id的订单
    public void updateOneOrdersById(Orders orders);

    //新增一个订单
    public void addOneOrders(Orders orders);

}

 购物车的业务层接口代码

---

package com.example.demo.service.impl;

import com.example.demo.bean.Orders;
import com.example.demo.mapper.OrdersMapper;
import com.example.demo.service.IOrdersService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class OrdersService implements IOrdersService {
    @Autowired
    private OrdersMapper ordersMapper;

    @Override
    public List getAllOrders() {
        return ordersMapper.findAll();
    }

    @Override
    public Orders getOneOrdersById(Integer id) {
        return ordersMapper.getReferenceById(id);
    }

    @Override
    public void deleteOneOrdersById(Integer id) {
        ordersMapper.deleteById(id);
    }

    @Override
    public void updateOneOrdersById(Orders orders) {
        ordersMapper.save(orders);
    }

    @Override
    public void addOneOrders(Orders orders) {
        ordersMapper.save(orders);
    }
}

购物车的业务接口实现类

---

package com.example.demo.mapper;

import com.example.demo.bean.Orders;
import org.springframework.data.jpa.repository.JpaRepository;

public interface OrdersMapper extends JpaRepository {
}

---

业务逻辑是，在产品列表的页面，有一个加入购物车的按钮，绑定了一个点击事件。会触发这个业务接口。在数据库内新增一条购物消息。

---

 如图所示，前端页面。购买按钮就是绑定了加入购物车的接口地址。

---

import { ref } from 'vue'
import { defineStore } from 'pinia'
import axios from 'axios'
const baseUrl = 'http://erxmns.natappfree.cc'
export const useGoodsStore = defineStore('goods', () => {
  const goodsList = ref([])
  
  /**
   * 获取产品列表
   */
  const  getGoodsList = async ()=> {
      const res = await axios.get(baseUrl+'/goods/alllist')
      goodsList.value = res.data.data
  }

  /**
   * 加入购物车
   */

  const addOneOrders= async (id)=>{
    const res = await axios.get(baseUrl+'/order/addOneOrder?id='+id)
    if(res.data.code===200){
      alert('新增订单成功')
    }else{
      alert('新增订单失败')
    }
    
  }
  return {goodsList,getGoodsList,addOneOrders }
})

如图代码，在产品的业务接口goods.js内，我们定义好了一个方法。新增一条购物消息。

它调用了接口地址，就是后端的购物车接口之一。

---

 /**
   * 加入购物车
   */

  const addOneOrders= async (id)=>{
    const res = await axios.get(baseUrl+'/order/addOneOrder?id='+id)
    if(res.data.code===200){
      alert('新增订单成功')
    }else{
      alert('新增订单失败')
    }
    
  }

 如图，后台数据库购物车的数据表各个字段情况。