get protocol

src/main/java/cn/quantgroup/xyqb/controller/external/user/WeChatController.java

@@ -300,6 +300,7 @@ public class WeChatController implements IBaseController {
             JSON.parseObject(extData, new TypeReference<HashMap<String, Object>>() {
             });
         } catch (Exception ex) {
+          LOGGER.error("解析extData发生错误", ex);
           // 从code获取token
           Merchant merchant = merchantService.findMerchantByName(systemKey);