code review 退款逻辑

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/PayCommonCoreService.java

@@ -1,25 +0,0 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order;
-
-import cn.iocoder.yudao.framework.pay.core.client.dto.PayNotifyDataDTO;
-
-/**
- * 支付通用 Core Service
- *
- * @author jason
- */
-public interface PayCommonCoreService {
-
-    /**
-     * 验证是否是渠道通知
-     * @param notifyData 通知数据
-     */
-    void verifyNotifyData(Long channelId, PayNotifyDataDTO notifyData);
-
-    /**
-     * 支付宝的支付回调通知，和退款回调通知 地址是同一个
-     * 是否是退款回调通知
-     * @param notifyData  通知数据
-     * @return
-     */
-    boolean isRefundNotify(Long channelId, PayNotifyDataDTO notifyData);
-}

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/PayOrderCoreService.java

@@ -47,6 +47,4 @@ public interface PayOrderCoreService {
     */
    void notifyPayOrder(Long channelId,  PayNotifyDataDTO notifyData) throws Exception;
 
-
-
 }

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/PayRefundChannelPostHandler.java

@@ -5,19 +5,21 @@ import cn.iocoder.yudao.framework.pay.core.enums.PayChannelRespEnum;
 
 /**
  * 支付退款订单 ，渠道返回后 后置处理
+ *
  * @author jason
  */
 public interface PayRefundChannelPostHandler {
 
     /**
      * 支持的渠道返回值
+     *
      * @return 支持的渠道返回值数组
      */
     PayChannelRespEnum[] supportHandleResp();
 
-
     /**
-     * 根据渠道返回， 处理支付退款单
+     * 根据渠道返回，处理支付退款单
+     *
      * @param respBO
      */
     void handleRefundChannelResp(PayRefundPostReqBO respBO);

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/PayRefundCoreService.java

@@ -11,23 +11,22 @@ import cn.iocoder.yudao.framework.pay.core.client.dto.PayNotifyDataDTO;
  */
 public interface PayRefundCoreService {
 
-
+    // TODO @jason：方法名改成，submitRefundOrder，发起退款订单。这样和发起支付单，保持一致
     /**
      * 提交退款申请
+     *
      * @param reqDTO 退款申请信息
      * @return 退款申请返回信息
      */
     PayRefundRespBO refund(PayRefundReqBO reqDTO);
 
-
     /**
      * 渠道的退款通知
+     *
      * @param channelId  渠道编号
      * @param notifyData  通知数据
      * @throws Exception 退款通知异常
      */
     void notifyPayRefund(Long channelId, PayNotifyDataDTO notifyData) throws Exception;
 
-
-
 }

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/bo/PayRefundPostReqBO.java

@@ -8,6 +8,7 @@ import lombok.Data;
 import lombok.NoArgsConstructor;
 import lombok.experimental.Accessors;
 
+// TODO @jason：改到 dto 哈。我们项目，统一使用 DTO
 @Data
 @Accessors(chain = true)
 @Builder

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/bo/PayRefundReqBO.java

@@ -5,6 +5,8 @@ import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import lombok.experimental.Accessors;
+
+// TODO @jason：改到 dto 哈。我们项目，统一使用 DTO
 /**
  * 退款申请单 Request DTO
  */

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/bo/PayRefundRespBO.java

@@ -6,6 +6,7 @@ import lombok.Data;
 import lombok.NoArgsConstructor;
 import lombok.experimental.Accessors;
 
+// TODO @jason：改到 dto 哈。我们项目，统一使用 DTO
 /**
  * 退款申请单 Response DTO
  */

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayCommonCoreServiceImpl.java

@@ -1,62 +0,0 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl;
-
-import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.merchant.PayChannelDO;
-import cn.iocoder.yudao.coreservice.modules.pay.service.merchant.PayChannelCoreService;
-import cn.iocoder.yudao.coreservice.modules.pay.service.order.PayCommonCoreService;
-import cn.iocoder.yudao.framework.pay.core.client.PayClient;
-import cn.iocoder.yudao.framework.pay.core.client.PayClientFactory;
-import cn.iocoder.yudao.framework.pay.core.client.dto.PayNotifyDataDTO;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.stereotype.Service;
-
-import javax.annotation.Resource;
-
-import static cn.iocoder.yudao.coreservice.modules.pay.enums.PayErrorCodeCoreConstants.PAY_CHANNEL_CLIENT_NOT_FOUND;
-import static cn.iocoder.yudao.coreservice.modules.pay.enums.PayErrorCodeCoreConstants.PAY_CHANNEL_NOTIFY_VERIFY_FAILED;
-import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
-
-/**
- * 支付通用 Core Service 实现类
- *
- * @author jason
- */
-@Service
-@Slf4j
-public class PayCommonCoreServiceImpl implements PayCommonCoreService {
-
-    @Resource
-    private PayChannelCoreService payChannelCoreService;
-
-    @Resource
-    private PayClientFactory payClientFactory;
-
-    @Override
-    public void verifyNotifyData(Long channelId, PayNotifyDataDTO notifyData) {
-        // 校验支付渠道是否有效
-        PayChannelDO channel = payChannelCoreService.validPayChannel(channelId);
-        // 校验支付客户端是否正确初始化
-        PayClient client = payClientFactory.getPayClient(channel.getId());
-        if (client == null) {
-            log.error("[notifyPayOrder][渠道编号({}) 找不到对应的支付客户端]", channel.getId());
-            throw exception(PAY_CHANNEL_CLIENT_NOT_FOUND);
-        }
-        boolean verifyResult = client.verifyNotifyData(notifyData);
-        if(!verifyResult){
-            //渠道通知验证失败
-            throw exception(PAY_CHANNEL_NOTIFY_VERIFY_FAILED);
-        }
-    }
-
-    @Override
-    public boolean isRefundNotify(Long channelId, PayNotifyDataDTO notifyData) {
-        // 校验支付渠道是否有效
-        PayChannelDO channel = payChannelCoreService.validPayChannel(channelId);
-        // 校验支付客户端是否正确初始化
-        PayClient client = payClientFactory.getPayClient(channel.getId());
-        if (client == null) {
-            log.error("[notifyPayOrder][渠道编号({}) 找不到对应的支付客户端]", channel.getId());
-            throw exception(PAY_CHANNEL_CLIENT_NOT_FOUND);
-        }
-        return client.isRefundNotify(notifyData);
-    }
-}

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayRefundCoreServiceImpl.java

@@ -50,18 +50,17 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
 
     @Resource
     private PayOrderCoreMapper payOrderCoreMapper;
-
     @Resource
     private PayRefundCoreMapper payRefundCoreMapper;
-
     @Resource
     private PayOrderExtensionCoreMapper payOrderExtensionCoreMapper;
 
     @Resource
     private PayAppCoreService payAppCoreService;
-
     @Resource
     private PayChannelCoreService payChannelCoreService;
+    @Resource
+    private PayNotifyCoreService payNotifyCoreService;
 
     @Resource
     private PayClientFactory payClientFactory;
@@ -72,25 +71,18 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
     @Resource
     private List<PayRefundChannelPostHandler> handlerList;
 
-    @Resource
-    private PayNotifyCoreService payNotifyCoreService;
-
-
+    // TODO @json：mapHandlers
     private final EnumMap<PayChannelRespEnum, PayRefundChannelPostHandler> mapHandler = new EnumMap<>(PayChannelRespEnum.class);
 
-
-
     @PostConstruct
     public void init(){
-
         if (Objects.nonNull(handlerList)) {
-            handlerList.forEach(t->{
-                for (PayChannelRespEnum item : t.supportHandleResp()) {
-                    mapHandler.put(item, t);
+            handlerList.forEach(handler -> {
+                for (PayChannelRespEnum item : handler.supportHandleResp()) {
+                    mapHandler.put(item, handler);
                 }
             });
         }
-
     }
 
     @Override
@@ -113,16 +105,16 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
             throw exception(PAY_CHANNEL_CLIENT_NOT_FOUND);
         }
 
-        //校验退款的条件
+        // 校验退款的条件
         validatePayRefund(reqBO, order);
 
-        //退款类型
+        // 退款类型
         PayRefundTypeEnum refundType = PayRefundTypeEnum.SOME;
         if (Objects.equals(reqBO.getAmount(), order.getAmount())) {
             refundType = PayRefundTypeEnum.ALL;
         }
 
-        //退款单入库 退款单状态：生成,  没有和渠道产生交互
+        // 退款单入库 退款单状态：生成,  没有和渠道产生交互
         PayOrderExtensionDO orderExtensionDO = payOrderExtensionCoreMapper.selectById(order.getSuccessExtensionId());
         PayRefundDO refundDO = PayRefundDO.builder().channelOrderNo(order.getChannelOrderNo())
                 .appId(order.getAppId())
@@ -144,9 +136,9 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
                 .reqNo(PaySeqUtils.genRefundReqNo())
                 .type(refundType.getStatus())
                 .build();
-
          payRefundCoreMapper.insert(refundDO);
 
+         // TODO @jason：可以把“调用渠道进行退款"写到这里，这样分块更明确
          PayRefundUnifiedReqDTO unifiedReqDTO = PayRefundUnifiedReqDTO.builder()
                 .userIp(reqBO.getUserIp())
                 .channelOrderNo(refundDO.getChannelOrderNo())
@@ -156,13 +148,14 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
                 .reason(refundDO.getReason())
                 .build();
 
-         //调用渠道进行退款
+         // 调用渠道进行退款
          PayRefundUnifiedRespDTO refundUnifiedRespDTO = client.unifiedRefund(unifiedReqDTO);
 
-        //根据渠道返回，获取退款后置处理，由postHandler 进行处理
+         // TODO @jason：下面这块，是一整块逻辑，不要空开。不然阅读的时候，会以为不是一块逻辑
+         // 根据渠道返回，获取退款后置处理，由postHandler 进行处理
          PayRefundChannelPostHandler payRefundChannelPostHandler = mapHandler.get(refundUnifiedRespDTO.getRespEnum());
 
-         if(Objects.isNull(payRefundChannelPostHandler)){
+         if (Objects.isNull(payRefundChannelPostHandler)) {
              throw exception(PAY_REFUND_POST_HANDLER_NOT_FOUND);
          }
 
@@ -192,11 +185,12 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
             log.error("[notifyPayOrder][渠道编号({}) 找不到对应的支付客户端]", channel.getId());
             throw exception(PAY_CHANNEL_CLIENT_NOT_FOUND);
         }
-        //解析渠道退款通知数据， 统一处理
+        // 解析渠道退款通知数据， 统一处理
         PayRefundNotifyDTO refundNotify = client.parseRefundNotify(notifyData);
 
-        if(Objects.equals(PayNotifyRefundStatusEnum.SUCCESS,refundNotify.getStatus())){
-            //退款成功。 支付宝只有退款成功才会发通知
+        // TODO @jason：抽一个 notifyPayRefundSuccess 方法
+        if (Objects.equals(PayNotifyRefundStatusEnum.SUCCESS,refundNotify.getStatus())){
+            // 退款成功。 支付宝只有退款成功才会发通知
             PayRefundDO refundDO = payRefundCoreMapper.selectByReqNo(refundNotify.getReqNo());
             if (refundDO == null) {
                 log.error("不存在 seqNo 为{} 的支付退款单",refundNotify.getReqNo());
@@ -208,9 +202,9 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
             if(PayRefundTypeEnum.ALL.getStatus().equals(type)){
                 orderStatus = PayOrderStatusEnum.CLOSED;
             }
-             //更新支付订单
+            // 更新支付订单
             PayOrderDO payOrderDO = payOrderCoreMapper.selectById(refundDO.getOrderId());
-             //需更新已退金额
+            // 需更新已退金额
             Long refundedAmount = payOrderDO.getRefundAmount();
             PayOrderDO updateOrderDO = new PayOrderDO();
             updateOrderDO.setId(refundDO.getOrderId())
@@ -219,7 +213,7 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
                     .setRefundStatus(type);
             payOrderCoreMapper.updateById(updateOrderDO);
 
-            //跟新退款订单
+            // 跟新退款订单
             PayRefundDO updateRefundDO = new PayRefundDO();
             updateRefundDO.setId(refundDO.getId())
                     .setSuccessTime(refundNotify.getRefundSuccessTime())
@@ -233,10 +227,9 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
             // TODO 通知商户成功或者失败. 现在通知似乎没有实现， 只是回调
             payNotifyCoreService.createPayNotifyTask(PayNotifyTaskCreateReqDTO.builder()
                     .type(PayNotifyTypeEnum.REFUND.getType()).dataId(refundDO.getId()).build());
-        }else{
+        } else {
             //TODO 退款失败
         }
-
     }
 
     /**
@@ -245,7 +238,6 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
      * @param order 原始支付订单信息
      */
     private void validatePayRefund(PayRefundReqBO reqBO, PayOrderDO order) {
-
         // 校验状态，必须是支付状态
         if (!PayOrderStatusEnum.SUCCESS.getStatus().equals(order.getStatus())) {
             throw exception(PAY_ORDER_STATUS_IS_NOT_SUCCESS);
@@ -258,10 +250,11 @@ public class PayRefundCoreServiceImpl implements PayRefundCoreService {
         if(reqBO.getAmount() + order.getRefundAmount() > order.getAmount()){
             throw exception(PAY_REFUND_AMOUNT_EXCEED);
         }
-        //校验渠道订单号
+        // 校验渠道订单号
         if (StrUtil.isEmpty(order.getChannelOrderNo())) {
             throw exception(PAY_REFUND_CHN_ORDER_NO_IS_NULL);
         }
         //TODO  退款的期限  退款次数的控制
     }
+
 }

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayRefundChannelFailedHandler.java → yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/handler/PayRefundChannelFailedHandler.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl;
+package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl.handler;
 
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayOrderDO;
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayRefundDO;

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayRefundChannelNotifyHandler.java → yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/handler/PayRefundChannelNotifyHandler.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl;
+package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl.handler;
 
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayOrderDO;
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayRefundDO;

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayRefundChannelQueryHandler.java → yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/handler/PayRefundChannelQueryHandler.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl;
+package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl.handler;
 
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayOrderDO;
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayRefundDO;

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayRefundChannelRetryHandler.java → yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/handler/PayRefundChannelRetryHandler.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl;
+package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl.handler;
 
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayOrderDO;
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayRefundDO;

yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/PayRefundChannelSuccessHandler.java → yudao-core-service/src/main/java/cn/iocoder/yudao/coreservice/modules/pay/service/order/impl/handler/PayRefundChannelSuccessHandler.java

@@ -1,4 +1,4 @@
-package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl;
+package cn.iocoder.yudao.coreservice.modules.pay.service.order.impl.handler;
 
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayOrderDO;
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayRefundDO;

yudao-framework/yudao-spring-boot-starter-biz-pay/src/main/java/cn/iocoder/yudao/framework/pay/core/client/PayClient.java

@@ -34,7 +34,6 @@ public interface PayClient {
      */
     PayOrderNotifyRespDTO parseOrderNotify(PayNotifyDataDTO data) throws Exception;
 
-
     /**
      * 调用支付渠道，进行退款
      * @param reqDTO  统一退款请求信息
@@ -49,22 +48,26 @@ public interface PayClient {
      */
     PayRefundNotifyDTO parseRefundNotify(PayNotifyDataDTO notifyData);
 
-
+    // TODO @芋艿：后续改成非 default，避免不知道去实现
     /**
      * 验证是否渠道通知
+     *
      * @param notifyData 通知数据
      * @return 默认是 true
      */
-    default boolean verifyNotifyData(PayNotifyDataDTO notifyData){
+    default boolean verifyNotifyData(PayNotifyDataDTO notifyData) {
         return true;
     }
 
+    // TODO @芋艿：后续改成非 default，避免不知道去实现
     /**
-     * 是否退款通知
+     * 判断是否为退款通知
+     *
      * @param notifyData  通知数据
      * @return 默认是 false
      */
     default  boolean isRefundNotify(PayNotifyDataDTO notifyData){
         return false;
     }
+
 }

yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/pay/controller/order/PayOrderController.java

@@ -2,27 +2,27 @@ package cn.iocoder.yudao.userserver.modules.pay.controller.order;
 
 import cn.hutool.core.bean.BeanUtil;
 import cn.iocoder.yudao.coreservice.modules.pay.dal.dataobject.order.PayOrderDO;
-import cn.iocoder.yudao.coreservice.modules.pay.service.order.PayCommonCoreService;
 import cn.iocoder.yudao.coreservice.modules.pay.service.order.PayOrderCoreService;
 import cn.iocoder.yudao.coreservice.modules.pay.service.order.PayRefundCoreService;
 import cn.iocoder.yudao.coreservice.modules.pay.service.order.dto.PayOrderSubmitReqDTO;
 import cn.iocoder.yudao.coreservice.modules.pay.service.order.dto.PayOrderSubmitRespDTO;
 import cn.iocoder.yudao.framework.common.pojo.CommonResult;
+import cn.iocoder.yudao.framework.pay.core.client.PayClient;
+import cn.iocoder.yudao.framework.pay.core.client.PayClientFactory;
 import cn.iocoder.yudao.framework.pay.core.client.dto.PayNotifyDataDTO;
-import cn.iocoder.yudao.framework.pay.core.enums.PayChannelEnum;
 import cn.iocoder.yudao.userserver.modules.pay.controller.order.vo.PayOrderSubmitReqVO;
 import cn.iocoder.yudao.userserver.modules.pay.controller.order.vo.PayOrderSubmitRespVO;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.http.MediaType;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
 import javax.annotation.Resource;
-
 import java.util.Map;
 
+import static cn.iocoder.yudao.coreservice.modules.pay.enums.PayErrorCodeCoreConstants.PAY_CHANNEL_CLIENT_NOT_FOUND;
+import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 import static cn.iocoder.yudao.framework.common.util.servlet.ServletUtils.getClientIP;
 
@@ -35,11 +35,11 @@ public class PayOrderController {
 
     @Resource
     private PayOrderCoreService payOrderCoreService;
-
     @Resource
     private PayRefundCoreService payRefundCoreService;
 
-    @Resource PayCommonCoreService commonCoreService;
+    @Resource
+    private PayClientFactory payClientFactory;
 
 
     @PostMapping("/submit")
@@ -81,11 +81,12 @@ public class PayOrderController {
     public String returnAliPayOrder(@PathVariable("channelId") Long channelId, @RequestParam Map<String, String> params){
         //TODO 可以根据渠道和 app_id 返回不同的页面
         log.info("app_id  is {}", params.get("app_id"));
-        return String.format("渠道[%s]支付成功", String.valueOf(channelId));
+        return String.format("渠道[%s]支付成功", channelId);
     }
 
     /**
      * 统一的渠道支付回调，支付宝的退款回调
+     *
      * @param channelId 渠道编号
      * @param params form 参数
      * @param originData http request body
@@ -94,20 +95,27 @@ public class PayOrderController {
     @PostMapping(value = "/notify/{channelId}")
     @ApiOperation("渠道统一的支付成功,或退款成功 通知url")
     public String notifyChannelPay(@PathVariable("channelId") Long channelId,
-                               @RequestParam Map<String, String> params,
-                               @RequestBody String originData) throws Exception {
-        //校验是否是渠道回调
-        commonCoreService.verifyNotifyData(channelId, PayNotifyDataDTO.builder().params(params).body(originData).build());
-        //支付宝退款交易也会触发支付回调接口
-        //参考 https://opensupport.alipay.com/support/helpcenter/193/201602484851
-        //判断是否为退款通知
-        if(commonCoreService.isRefundNotify(channelId, PayNotifyDataDTO.builder().params(params).body(originData).build())) {
-            //退款通知
-            payRefundCoreService.notifyPayRefund(channelId,PayNotifyDataDTO.builder().params(params).body(originData).build());
-        }else{
-            //支付通知
-            payOrderCoreService.notifyPayOrder(channelId,PayNotifyDataDTO.builder().params(params).body(originData).build());
+                                   @RequestParam Map<String, String> params,
+                                   @RequestBody String originData) throws Exception {
+        // 校验支付渠道是否存在
+        PayClient payClient = payClientFactory.getPayClient(channelId);
+        if (payClient == null) {
+            log.error("[notifyPayOrder][渠道编号({}) 找不到对应的支付客户端]", channelId);
+            throw exception(PAY_CHANNEL_CLIENT_NOT_FOUND);
         }
+
+        // 校验通知数据是否合法
+        PayNotifyDataDTO notifyData = PayNotifyDataDTO.builder().params(params).body(originData).build();
+        payClient.verifyNotifyData(notifyData);
+
+        // 如果是退款，则发起退款通知
+        if (payClient.isRefundNotify(notifyData)) {
+            payRefundCoreService.notifyPayRefund(channelId, PayNotifyDataDTO.builder().params(params).body(originData).build());
+            return "success";
+        }
+
+        // 如果非退款，则发起支付通知
+        payOrderCoreService.notifyPayOrder(channelId, PayNotifyDataDTO.builder().params(params).body(originData).build());
         return "success";
     }
 

yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/pay/controller/order/PayRefundController.java

@@ -32,7 +32,7 @@ public class PayRefundController {
 
     @PostMapping("/refund")
     @ApiOperation("提交退款订单")
-    public CommonResult<PayRefundRespVO> refund(@RequestBody  PayRefundReqVO reqVO){
+    public CommonResult<PayRefundRespVO> refund(@RequestBody PayRefundReqVO reqVO){
         PayRefundReqBO reqBO = PayRefundConvert.INSTANCE.convert(reqVO);
         reqBO.setUserIp(getClientIP());
         //TODO 测试暂时模拟生成商户退款订单
@@ -40,4 +40,5 @@ public class PayRefundController {
         //reqBO.setMerchantRefundNo("MO202111210814084370000");
         return CommonResult.success( PayRefundConvert.INSTANCE.convert(payRefundCoreService.refund(reqBO)));
     }
+
 }