需要时执行代码行

Question

我有一个@ModelAttribute，我从另一个方法showHome调用。

@ModelAttribute
    public void getAuthority(@ModelAttribute InputDataType authorityCreatedRequest, CountyInputDataType countryCreatedRequest, ParishInputDataType parishCreatedRequest, Model model)
    {

        model.addAttribute("authorityCreatedRequest", new ObjectFactory().createInputDataType());       
        CrrAuthorityResponseType authorityCreatedResponse = new ObjectFactory().createCrrAuthorityResponseType();
        authorityCreatedResponse = (CrrAuthorityResponseType) ((JAXBElement<?>) rdwebServiceTemplate.marshalSendAndReceive(authorityCreatedRequest)).getValue();        
        model.addAttribute("authorityCreatedResponse", authorityCreatedResponse);
        authorityList.clear();
        authorityList.add( authorityCreatedResponse );      
        model.addAttribute("authorityList", authorityList);      
    }

问题是modelattribute正在执行2次。我不想多次执行它。有没有比@ModelAttribute更好的方法，我可以执行我需要的代码行。

@RequestMapping
    public String showHome(@ModelAttribute InputDataType authorityCreatedRequest, CountyInputDataType countryCreatedRequest, ParishInputDataType parishCreatedRequest, Model model)
    {


       model.addAttribute("authorityList", authorityList);      



       return "crownreservereport"; 
    }