mall + pay：

1. 增加微信 bar 和 native 的集成测试，方便调试配置

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

@@ -45,12 +45,20 @@ public class PayRefundUnifiedReqDTO {
     @NotEmpty(message = "退款原因不能为空")
     private String reason;
 
+    /**
+     * 支付金额，单位：分
+     *
+     * 目前微信支付在退款的时候，必须传递该字段
+     */
+    @NotNull(message = "支付金额不能为空")
+    @DecimalMin(value = "0", inclusive = false, message = "支付金额必须大于零")
+    private Integer payPrice;
     /**
      * 退款金额，单位：分
      */
     @NotNull(message = "退款金额不能为空")
     @DecimalMin(value = "0", inclusive = false, message = "支付金额必须大于零")
-    private Integer price;
+    private Integer refundPrice;
 
     /**
      * 退款结果的 notify 回调地址

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

@@ -67,7 +67,7 @@ public abstract class AbstractAlipayPayClient extends AbstractPayClient<AlipayPa
         AlipayTradeRefundModel model = new AlipayTradeRefundModel();
         model.setOutTradeNo(reqDTO.getOutTradeNo());
         model.setOutRequestNo(reqDTO.getOutRefundNo());
-        model.setRefundAmount(formatAmount(reqDTO.getPrice()));
+        model.setRefundAmount(formatAmount(reqDTO.getRefundPrice()));
         model.setRefundReason(reqDTO.getReason());
         // 1.2 构建 AlipayTradePayRequest 请求
         AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
@@ -75,6 +75,7 @@ public abstract class AbstractAlipayPayClient extends AbstractPayClient<AlipayPa
         try {
             // 2.1 执行请求
             AlipayTradeRefundResponse response =  client.execute(request);
+            // 2.2 创建返回结果
             PayRefundRespDTO refund = new PayRefundRespDTO()
                     .setOutRefundNo(reqDTO.getOutRefundNo())
                     .setRawData(response);

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

@@ -9,10 +9,15 @@ import cn.iocoder.yudao.framework.common.util.io.FileUtils;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderRespDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedRespDTO;
+import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundRespDTO;
+import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.impl.AbstractPayClient;
 import cn.iocoder.yudao.framework.pay.core.enums.PayFrameworkErrorCodeConstants;
+import cn.iocoder.yudao.framework.pay.core.enums.refund.PayRefundStatusRespEnum;
 import com.github.binarywang.wxpay.bean.notify.WxPayOrderNotifyResult;
 import com.github.binarywang.wxpay.bean.notify.WxPayOrderNotifyV3Result;
+import com.github.binarywang.wxpay.bean.request.WxPayRefundRequest;
+import com.github.binarywang.wxpay.bean.result.WxPayRefundResult;
 import com.github.binarywang.wxpay.config.WxPayConfig;
 import com.github.binarywang.wxpay.exception.WxPayException;
 import com.github.binarywang.wxpay.service.WxPayService;
@@ -80,6 +85,7 @@ public abstract class AbstractWxPayClient extends AbstractPayClient<WxPayClientC
                     throw new IllegalArgumentException(String.format("未知的 API 版本(%s)", config.getApiVersion()));
             }
         } catch (WxPayException e) {
+            // todo 芋艿：异常的处理；
             throw buildUnifiedOrderException(reqDTO, e);
         }
     }
@@ -102,6 +108,51 @@ public abstract class AbstractWxPayClient extends AbstractPayClient<WxPayClientC
     protected abstract PayOrderUnifiedRespDTO doUnifiedOrderV3(PayOrderUnifiedReqDTO reqDTO)
             throws WxPayException;
 
+    @Override
+    protected PayRefundRespDTO doUnifiedRefund(PayRefundUnifiedReqDTO reqDTO) throws Throwable {
+        try {
+            switch (config.getApiVersion()) {
+                case WxPayClientConfig.API_VERSION_V2:
+                    return doUnifiedRefundV2(reqDTO);
+                case WxPayClientConfig.API_VERSION_V3:
+                    return doUnifiedRefundV3(reqDTO);
+                default:
+                    throw new IllegalArgumentException(String.format("未知的 API 版本(%s)", config.getApiVersion()));
+            }
+        } catch (WxPayException e) {
+            // todo 芋艿：异常的处理；
+            throw buildUnifiedOrderException(null, e);
+        }
+    }
+
+    private PayRefundRespDTO doUnifiedRefundV2(PayRefundUnifiedReqDTO reqDTO) throws Throwable {
+        // 1. 构建 WxPayRefundRequest 请求
+        WxPayRefundRequest request = new WxPayRefundRequest()
+                .setOutTradeNo(reqDTO.getOutTradeNo())
+                .setOutRefundNo(reqDTO.getOutRefundNo())
+                .setRefundFee(reqDTO.getRefundPrice())
+                .setRefundDesc(reqDTO.getReason())
+                .setTotalFee(reqDTO.getPayPrice())
+                .setNotifyUrl(reqDTO.getNotifyUrl());
+        // 2.1 执行请求
+        WxPayRefundResult response = client.refundV2(request); // TODO 芋艿：可以分成 V2 和 V3 的退款接口
+        // 2.2 创建返回结果
+        PayRefundRespDTO refund = new PayRefundRespDTO()
+                .setOutRefundNo(reqDTO.getOutRefundNo())
+                .setRawData(response);
+        if (Objects.equals("SUCCESS", response.getResultCode())) {
+            refund.setStatus(PayRefundStatusRespEnum.WAITING.getStatus());
+            refund.setChannelRefundNo(response.getRefundId());
+        } else {
+            refund.setStatus(PayRefundStatusRespEnum.FAILURE.getStatus());
+            // TODO 芋艿；异常的处理；
+        }
+        return refund;
+    }
+
+    private PayRefundRespDTO doUnifiedRefundV3(PayRefundUnifiedReqDTO reqDTO) throws Throwable {
+        return null;
+    }
 
     @Override
     public Object parseNotify(Map<String, String> params, String body) {

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

@@ -2,8 +2,6 @@ package cn.iocoder.yudao.framework.pay.core.client.impl.weixin;
 
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.enums.channel.PayChannelEnum;
 import com.github.binarywang.wxpay.constant.WxPayConstants;
 import com.github.binarywang.wxpay.exception.WxPayException;
@@ -20,11 +18,6 @@ public class WxAppPayClient extends AbstractWxPayClient {
         super.doInit(WxPayConstants.TradeType.APP);
     }
 
-    @Override
-    protected PayRefundRespDTO doUnifiedRefund(PayRefundUnifiedReqDTO reqDTO) throws Throwable {
-        return null;
-    }
-
     @Override
     protected PayOrderUnifiedRespDTO doUnifiedOrderV2(PayOrderUnifiedReqDTO reqDTO) throws WxPayException {
         return null;

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

@@ -8,8 +8,6 @@ import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderRespDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.enums.channel.PayChannelEnum;
 import cn.iocoder.yudao.framework.pay.core.enums.order.PayOrderDisplayModeEnum;
 import cn.iocoder.yudao.framework.pay.core.enums.order.PayOrderStatusRespEnum;
@@ -104,11 +102,6 @@ public class WxBarPayClient extends AbstractWxPayClient {
         return doUnifiedOrderV2(reqDTO);
     }
 
-    @Override
-    protected PayRefundRespDTO doUnifiedRefund(PayRefundUnifiedReqDTO reqDTO) {
-        return null;
-    }
-
     // ========== 各种工具方法 ==========
 
     static String getAuthCode(PayOrderUnifiedReqDTO reqDTO) {

yudao-framework/yudao-spring-boot-starter-biz-pay/src/main/java/cn/iocoder/yudao/framework/pay/core/client/impl/weixin/WxH5PayClient.java

@@ -2,8 +2,6 @@ package cn.iocoder.yudao.framework.pay.core.client.impl.weixin;
 
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.enums.channel.PayChannelEnum;
 import com.github.binarywang.wxpay.constant.WxPayConstants;
 import com.github.binarywang.wxpay.exception.WxPayException;
@@ -20,11 +18,6 @@ public class WxH5PayClient extends AbstractWxPayClient {
         super.doInit(WxPayConstants.TradeType.MWEB);
     }
 
-    @Override
-    protected PayRefundRespDTO doUnifiedRefund(PayRefundUnifiedReqDTO reqDTO) throws Throwable {
-        return null;
-    }
-
     @Override
     protected PayOrderUnifiedRespDTO doUnifiedOrderV2(PayOrderUnifiedReqDTO reqDTO) throws WxPayException {
         return null;

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

@@ -2,8 +2,6 @@ package cn.iocoder.yudao.framework.pay.core.client.impl.weixin;
 
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.enums.channel.PayChannelEnum;
 import cn.iocoder.yudao.framework.pay.core.enums.order.PayOrderDisplayModeEnum;
 import com.github.binarywang.wxpay.bean.order.WxPayNativeOrderResult;
@@ -65,16 +63,11 @@ public class WxNativePayClient extends AbstractWxPayClient {
         request.setSceneInfo(new WxPayUnifiedOrderV3Request.SceneInfo().setPayerClientIp(reqDTO.getUserIp()));
         request.setNotifyUrl(reqDTO.getNotifyUrl());
         // 执行请求
-        WxPayNativeOrderResult response = client.createOrderV3(TradeTypeEnum.NATIVE, request);
+        String response = client.createOrderV3(TradeTypeEnum.NATIVE, request);
 
         // 转换结果
         return new PayOrderUnifiedRespDTO(PayOrderDisplayModeEnum.QR_CODE.getMode(),
-                response.getCodeUrl());
-    }
-
-    @Override
-    protected PayRefundRespDTO doUnifiedRefund(PayRefundUnifiedReqDTO reqDTO) throws Throwable {
-        return null;
+                response);
     }
 
 }

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

@@ -5,8 +5,6 @@ import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.client.dto.order.PayOrderUnifiedRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundRespDTO;
-import cn.iocoder.yudao.framework.pay.core.client.dto.refund.PayRefundUnifiedReqDTO;
 import cn.iocoder.yudao.framework.pay.core.enums.channel.PayChannelEnum;
 import cn.iocoder.yudao.framework.pay.core.enums.order.PayOrderDisplayModeEnum;
 import com.github.binarywang.wxpay.bean.order.WxPayMpOrderResult;
@@ -83,12 +81,6 @@ public class WxPubPayClient extends AbstractWxPayClient {
                 JsonUtils.toJsonString(response));
     }
 
-    @Override
-    protected PayRefundRespDTO doUnifiedRefund(PayRefundUnifiedReqDTO reqDTO) {
-        // TODO 需要实现
-        throw new UnsupportedOperationException();
-    }
-
     // ========== 各种工具方法 ==========
 
     static String getOpenid(PayOrderUnifiedReqDTO reqDTO) {