我是否必须在SuperController类中放置@Controller或@SessionAttributes？

Question

由于代码共享而由SuperController类处理的Post方法。我猜如@Controller和@SessionAttributes是可继承的，所以我只需要把它们放在subController类中。我是否正确假设？

------------------------------------------------------- 

@Controller 
@SessionAttributes("form") 
@RequestMapping(value = "/sample") 
public class SampleController extends BaseController { 

    @RequestMapping(method = RequestMethod.GET) 
    public String getCreateForm(Model model) { 
     model.addAttribute("form", new SubAForm()); 
     return "sample/input"; 
    } 

} 

------------------------------------------------------- 

public class BaseController { 

    @RequestMapping(method = RequestMethod.POST) 
    public String register(@ModelAttribute("form") SuperForm form, Model model) { 
     return "sample/input"; 
    } 

} 

------------------------------------------------------- 

public class SuperForm { 

    private Long superId; 

    public Long getSuperId() { 
     return superId; 
    } 

    public void setSuperId(Long superId) { 
     this.superId = superId; 
    } 

} 

------------------------------------------------------- 

public class SubAForm extends SuperForm { 

    private Long subAId; 

    public Long getSubAId() { 
     return subAId; 
    } 

    public void setSubAId(Long subAId) { 
     this.subAId = subAId; 
    } 

} 

------------------------------------------------------- 

<form:form modelAttribute="form" method="post"> 
    <fieldset> 
     <legend>SUPER FIELD</legend> 
     <p> 
      SUPER ID：<form:input path="superId" /> 
     </p> 
    </fieldset> 
    <fieldset> 
     <legend>SUB A FIELD</legend> 
     <p> 
      SUB A ID：<form:input path="subAId" /> 
     </p> 
    </fieldset> 
    <p> 
     <input type="submit" value="register" /> 
    </p> 
</form:form> 

Answer 1

不，你不需要这个，除非你想让你的基础控制器也能够充当控制器。