code: public static void logSql(Class daoUnitClass, Map<String, Object> map) {
          XianConnection connection = PoolFactory.getPool().getMasterDatasource().getConnection().blockingGet();
          DaoUnit daoUnit;
          try {
              daoUnit = (DaoUnit) daoUnitClass.newInstance();
              for (SqlAction action : daoUnit.getActions()) {
                  ((AbstractSqlAction) action).setConnection(connection);
                  ((AbstractSqlAction) action).setMap(map);
                  action.logSql(map);
              }
          } catch (InstantiationException | IllegalAccessException e) {
              e.printStackTrace();
          }
          PoolFactory.getPool().destroyPoolIfNot();
      }
docs: 打印sql语句，它不会将sql执行，只是打印sql语句。
  仅供内部测试使用
  
  @param daoUnitClass unit class
  @param map          parameter map