用XStream映射继承

Question

当仅使用继承封送类时，大多数类数据将被持久化。

例如，使用代码：

public class Test {

    static class Person {
        String name;
    }

    static class Employee extends Person {
        String job;
    }

    public static void main(String[] args) {
        Employee me = new Employee();
        me.name = "Sam";
        me.job = "Developer";
        XStream xStream = new XStream();
        xStream.alias("employee", Employee.class);
        String xml = xStream.toXML(me);
        System.out.println(xml);
    }
}

我的输出看起来是：

<employee>
  <job>Developer</job>
</employee>

如何让XStream输出父类数据？

Answer 1

您只需切换到较新的XStream版本即可。我使用1.2.2运行了您的代码并得到了以下结果：

<employee>
  <job>Developer</job>
  <name>Sam</name>
</employee>