我必须在SuperController类中放置@Controller或@SessionAttributes吗？

Question

由于代码共享，由SuperController类处理的方法。我猜这样的@Controller和@SessionAttributes是可继承的，所以我必须把它们放在subController类中。我在假设中是否正确？

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@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";
    }

}

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public class BaseController {

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

}

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public class SuperForm {

    private Long superId;

    public Long getSuperId() {
        return superId;
    }

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

}

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public class SubAForm extends SuperForm {

    private Long subAId;

    public Long getSubAId() {
        return subAId;
    }

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

}

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<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，除非你希望你的基本控制器能够充当控制器。