修复金额格式化：确保保留两位小数

computility-module-pay/src/main/java/com/luhu/computility/module/pay/service/wpgj/CommonWpgjPayServiceImpl.java

@@ -46,7 +46,9 @@ public class CommonWpgjPayServiceImpl implements CommonWpgjPayApi {
             wpgjCreateReqDTO.setBusinessType(createReqDTO.getBusinessType());
             wpgjCreateReqDTO.setMerOrderId(String.valueOf(createReqDTO.getBusinessOrderId()));
             wpgjCreateReqDTO.setOrderTitle(StrUtils.maxLength(createReqDTO.getOrderTitle(), 64)); // WPGJ订单标题最大64位
-            wpgjCreateReqDTO.setOrderAmt(String.valueOf(createReqDTO.getPayAmount() / 100.0)); // 转换为元
+            // 修复金额格式化：确保保留两位小数（WPGJ要求）
+            String orderAmtInYuan = String.format("%.2f", createReqDTO.getPayAmount() / 100.0);
+            wpgjCreateReqDTO.setOrderAmt(orderAmtInYuan); // 转换为元，保留两位小数
 
             Long wpgjOrderId = payOrderWpgjApi.createOrderWpgj(wpgjCreateReqDTO);
             log.info("[createCommonWpgjOrder] WPGJ订单创建成功，业务类型: {}, 业务订单ID: {}, WPGJ订单ID: {}",