diff --git a/backend/lpg-user/src/main/java/com/hotent/lpg/user/manager/impl/WxPayManagerImpl.java b/backend/lpg-user/src/main/java/com/hotent/lpg/user/manager/impl/WxPayManagerImpl.java
index c7817b6..79aaae7 100644
--- a/backend/lpg-user/src/main/java/com/hotent/lpg/user/manager/impl/WxPayManagerImpl.java
+++ b/backend/lpg-user/src/main/java/com/hotent/lpg/user/manager/impl/WxPayManagerImpl.java
@@ -12,6 +12,7 @@ import com.github.binarywang.wxpay.bean.request.WxPayUnifiedOrderRequest;
 import com.github.binarywang.wxpay.bean.result.WxPayRefundResult;
 import com.github.binarywang.wxpay.exception.WxPayException;
 import com.github.binarywang.wxpay.service.WxPayService;
+import com.hotent.base.exception.BaseException;
 import com.hotent.base.util.BeanUtils;
 import com.hotent.lpg.common.enums.DdZffsEnum;
 import com.hotent.lpg.common.enums.DdlyEnum;
@@ -47,6 +48,7 @@ import javax.xml.xpath.XPathFactory;
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.math.BigDecimal;
+import java.rmi.ServerError;
 import java.time.LocalDateTime;
 import java.util.HashMap;
 
@@ -59,10 +61,10 @@ public class WxPayManagerImpl implements WxPayManager {
     private String hostUrl;
 
     @Resource
-    private  DdDao ddDao;
+    private DdDao ddDao;
 
     @Resource
-    private  CzzfpzDao czzfpzDao;
+    private CzzfpzDao czzfpzDao;
 
     /**
      * 发起退款请求
@@ -118,49 +120,75 @@ public class WxPayManagerImpl implements WxPayManager {
      */
     @Override
     public String handleRefundSuccessCallback(String xmlData) {
+        // 将XML格式的回调数据转换为WxPayOrderNotifyResult对象
         WxPayOrderNotifyResult rs = WxPayOrderNotifyResult.fromXML(xmlData);
+        // 获取回调中的返回码
         String returnCode = rs.getReturnCode();
+        // 如果返回码不是"SUCCESS"，则生成失败响应并返回
         if (!returnCode.equals("SUCCESS")) {
             return generateXmlResponse("FAIL", "退款失败", returnCode);
         }
+        // 获取回调中的appid和mchId
         String appid = rs.getAppid();
         String mchId = rs.getMchId();
-        //在用 场站信息  拿到场站对应得支付配置
-        WCzzfpz wCzzfpz = czzfpzDao.selectOne(Wrappers.<WCzzfpz>lambdaQuery().eq(WCzzfpz::getFAppid, appid).eq(WCzzfpz::getFMchid, mchId));
+        // 从数据库中查询对应的应用配置信息
+        WCzzfpz wCzzfpz = czzfpzDao.selectOne(Wrappers.<WCzzfpz>lambdaQuery()
+                .eq(WCzzfpz::getFAppid, appid)
+                .eq(WCzzfpz::getFMchid, mchId)
+                .last("LIMIT 1"));
+        // 如果没有找到对应的配置信息，则抛出异常
+        if (wCzzfpz == null) {
+            throw new BaseException("退款失败，请联系管理员。");
+        }
+        // 根据配置信息创建WxPayService对象
         WxPayService wxPayService = WxPayConfiguration.getPayService(wCzzfpz);
-        //下面依旧是走微信sdk，查询订单和验证订单，为了保证数据得安全性，还是重复验证一次
-        String dddh = null;
         try {
+            // 解析退款通知结果
             WxPayRefundNotifyResult notifyResult = wxPayService.parseRefundNotifyResult(xmlData);
+            // 获取退款请求信息
             WxPayRefundNotifyResult.ReqInfo reqInfo = notifyResult.getReqInfo();
+            // 提取退款相关信息
             String refundId = reqInfo.getRefundId();
             String successTime = reqInfo.getSuccessTime();
             String transactionId = reqInfo.getTransactionId();
             String outTradeNo = reqInfo.getOutTradeNo();
-            WDd wDd = ddDao.selectOne(Wrappers.<WDd>lambdaQuery().eq(WDd::getFZfdh, transactionId).eq(WDd::getFDddh, outTradeNo));
+            // 从数据库中查询订单信息
+            WDd wDd = ddDao.selectOne(Wrappers.<WDd>lambdaQuery()
+                    .eq(WDd::getFZfdh, transactionId)
+                    .eq(WDd::getFDddh, outTradeNo));
+            // 如果没有查询到订单，则生成失败响应并返回
             if (wDd == null) {
                 return generateXmlResponse("FAIL", "未查询到订单", outTradeNo);
             }
-            if (wDd.getFSftk().equals(SysEnum.Y.getCode())){
+            // 如果订单已经退款，则生成失败响应并返回
+            if (wDd.getFSftk().equals(SysEnum.Y.getCode())) {
                 return generateXmlResponse("FAIL", "订单已退款", outTradeNo);
             }
-            // 5. 更新订单状态
+            // 更新订单状态为已退款，并记录相关信息
             wDd.setFDdzt(DdztEnum.REFUNDED.getCode());
             wDd.setFSftk(SysEnum.Y.getCode());
             wDd.setFTkdh(refundId);
             wDd.setFTksj(LocalDateTimeUtils.parse(successTime));
+            // 保存更新后的订单信息
             ddDao.updateById(wDd);
-            log.info("微信退款成功: {}", dddh);
-            return generateXmlResponse("SUCCESS", "成功", dddh);
+            // 记录日志信息
+            log.info("微信退款成功: {}", wDd.getFDddh());
+            // 生成成功响应并返回
+            return generateXmlResponse("SUCCESS", "成功", outTradeNo);
         } catch (WxPayException e) {
+            // 记录微信支付异常信息
             log.error("微信退款回调处理失败: {}", e.getErrCodeDes(), e);
-            return generateXmlResponse("FAIL", e.getErrCodeDes(), dddh);
+            // 生成失败响应并返回
+            return generateXmlResponse("FAIL", e.getErrCodeDes(), "");
+        } catch (Exception e) {
+            // 记录其他异常信息
+            log.error("处理退款回调时发生未知错误: ", e);
+            // 生成失败响应并返回
+            return generateXmlResponse("FAIL", "处理退款回调时发生未知错误", "");
         }
     }
 
 
-
-
     /**
      * 处理支付成功回调
      *
@@ -218,6 +246,7 @@ public class WxPayManagerImpl implements WxPayManager {
 
     /**
      * 生成预支付订单
+     *
      * @param wDd
      * @param openId
      * @return
--
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