Java 多级泛型

我试图将一个类编写为：

public class Article<T<? extends ManageGenericArticleInDTO>, U> implements Serializable {
    private T<? extends ManageGenericArticleInDTO> userInput;
    private U severData;

    public Article<T<? extends ManageGenericArticleInDTO>, U>() {
        super();
    }


    public void setUserInput(T<? extends ManageGenericArticleInDTO> userInput) {
        this.userInput = userInput;
    }

    public T<? extends ManageGenericArticleInDTO> getUserInput() {
        return userInput;
    }

    public void setSeverData(U severData) {
        this.severData = severData;
    }

    public U getSeverData() {
        return severData;
    }
}

---

这些错误不再出现，但我得到警告，T和U是不可序列化的。

我认为您缺少了左括号和右括号

应该是,

Article<UpdateManageArticleInDTO<ManageGenericArticleInDTO>, UpdateCentralPOSMArticleDTO> article = new Article<UpdateManageArticleInDTO<ManageGenericArticleInDTO>, UpdateCentralPOSMArticleDTO>();
Article<AddManageArticleInDTO<ManageCentralPOSMArticleInDTO>, AddArticleStepDTO> article = new Article<AddManageArticleInDTO<ManageCentralPOSMArticleInDTO>, AddArticleStepDTO>(); 

Article-Article=新文章（）；
第条=新条款（）；

I获取类定义中的编译错误。缺少括号是因为在记事本中写入。以下代码应修复警告：公共类AddArticleInBean实现可序列化的{private T userInput；private U severData；公共AddArticleInBean（）{super（）；}公共void setUserInput（T userInput）{this.userInput=userInput；}public T getUserInput（）{return userInput；}public void setSeverData（U severData）{this.severData=severData；}public U getSeverData（）{return severData；}

public class AddArticleInBean<T, U> implements Serializable {
    private T userInput;
    private U severData;

    public AddArticleInBean() {
        super();
    }


    public void setUserInput(T userInput) {
        this.userInput = userInput;
    }

    public T getUserInput() {
        return userInput;
    }

    public void setSeverData(U severData) {
        this.severData = severData;
    }

    public U getSeverData() {
        return severData;
    }
}

Article<UpdateManageArticleInDTO<ManageGenericArticleInDTO>, UpdateCentralPOSMArticleDTO> article = new Article<UpdateManageArticleInDTO<ManageGenericArticleInDTO>, UpdateCentralPOSMArticleDTO>();
Article<AddManageArticleInDTO<ManageCentralPOSMArticleInDTO>, AddArticleStepDTO> article = new Article<AddManageArticleInDTO<ManageCentralPOSMArticleInDTO>, AddArticleStepDTO>();