微信支付接口开发详流程

1.支付接口分析

引入依赖

<dependencies>
    <dependency>
        <groupId>com.github.wxpay</groupId>
        <artifactId>wxpay-sdk</artifactId>
        <version>0.0.3</version>
    </dependency>

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
    </dependency>
</dependencies>

创建订单相关表

2. 开发创建订单接口

1.编写订单controller

@RestController
@RequestMapping("/orderservice/order")
@CrossOrigin
public class TOrderController {
          
   

    @Autowired
    private TOrderService orderService;
    //根据课程id和用户id创建订单，返回订单id
    @PostMapping("createOrder/{courseId}")
    public R save(@PathVariable String courseId, HttpServletRequest request) {
          
   
        String orderId = orderService.saveOrder(courseId, JwtUtils.getMemberIdByJwtToken(request));
        return R.ok().data("orderId", orderId);
    }
}

2.编写订单OrderServiceImpl

//创建订单实现类
    @Override
    public String saveOrder(String courseId, String memberId) {
          
   
        //远程调用课程服务，根据课程id获取课程信息
        CourseInfoForm courseDto = eduClient.getCourseInfoDto(courseId);

        //远程调用用户服务，根据用户id获取用户信息
        UcenterMember ucenterMember = ucenterClient.getInfo(memberId);

        //创建订单
        Order order = new Order();
        order.setOrderNo(OrderNoUtil.getOrderNo());
        order.setCourseId(courseId);
        order.setCourseTitle(courseDto.getTitle());
        order.setCourseCover(courseDto.getCover());
        order.setTeacherName("test");
        order.setTotalFee(courseDto.getPrice());
        order.setMemberId(memberId);
        order.setMobile(ucenterMember.getMobile());
        order.setNickname(ucenterMember.getNickname());
        order.setStatus(0);
        order.setPayType(1);
        baseMapper.insert(order);

        return order.getOrderNo();
    }

3. 开发根据订单id查询订单详情接口

controller

@GetMapping("getOrder/{orderId}")
    public R get(@PathVariable String orderId) {
          
   
        QueryWrapper<Order> wrapper = new QueryWrapper<>();
        wrapper.eq("order_no", orderId);
        Order order = orderService.getOne(wrapper);
        return R.ok().data("item", order);
    }

4. 开发生成二维码接口

controller

/**
     * 生成二维码
     *
     * @return
     */
    @GetMapping("/createNative/{orderNo}")
    public R createNative(@PathVariable String orderNo) {
          
   
        Map map = payService.createNative(orderNo);
        return R.ok().data(map);
    }

service实现

5. 开发查询订单支付状态接口

@GetMapping("/queryPayStatus/{orderNo}")
    public R queryPayStatus(@PathVariable String orderNo) {
          
   
        //调用查询接口
        Map<String, String> map = payService.queryPayStatus(orderNo);
        if (map == null) {
          
   //出错
            return R.error().message("支付出错");
        }
        if (map.get("trade_state").equals("SUCCESS")) {
          
   //如果成功
            //更改订单状态
            //payService.updateOrderStatus(map);
            return R.ok().message("支付成功");
        }

        return R.ok().code(25000).message("支付中");
    }

service实现