public static Object execList(String controllerName
, Map param, HttpServletRequest req
, HttpServletResponse rep)throws Exception {
Map env =new HashMap<>();
env.put("param",param);
env.put("req",req);
env.put("rep",rep);
CRUDFactory crudFactory = CRUDContext.getInstance().getFactoryByControllerName(controllerName);
AstTree astTree = crudFactory.getAstTreeByMethod(ApiUtil.METHOD_LIST);
Runtime runtime =new Runtime(astTree,env);
return runtime.run();
}