add log

src/main/java/au/com/royalpay/payment/manage/appclient/web/RetailAppController.java

@@ -319,7 +319,9 @@ public class RetailAppController {
 
     @RequestMapping(value = "/modify/retail_surcharge", method = RequestMethod.PUT)
     public JSONObject setCustomerPayForSurcharge(@ModelAttribute(CommonConsts.RETAIL_DEVICE) JSONObject device, @RequestBody JSONObject config) {
-        return retailAppService.updateRetailConfig(device, config.getBooleanValue("retail_surcharge"));
+        JSONObject result =retailAppService.updateRetailConfig(device, config.getBooleanValue("retail_surcharge"));
+        logger.info(result.toJSONString());
+        return result;
     }
 
     @RequestMapping(value = "/modify/require_remark", method = RequestMethod.PUT)