code: private void execute(Sql sqlObj, Map<String, Object> vars, Map<String, Object> params) {
          if (vars != null)
              sqlObj.vars().putAll(vars);
  
          if (params != null) {
              Map<String, Object> newParams = paramProcess(params);
              sqlObj.params().putAll(newParams);
          }
  
          dao().execute(sqlObj);
      }
docs: 设置sql参数并执行sql。