将对象序列化为XML,仅使用引用ID
本文关键字:引用 ID 对象 序列化 XML | 更新日期: 2023-09-27 18:05:29
我定义了一个包含组件的对象。每个组件都可以包含其他组件作为子组件。像这样:
[Serializable]
public class Thing
{
private String name;
private List<MyComponent> components;
//...
}
[Serializable]
public class MyComponent
{
private String name;
private List<MyComponent> subcomponents;
private String componentID;
//...
}
序列化现在非常简单:
Thing t;
//...lots of stuff happens...
XmlSerializer x = new XmlSerializer(t.GetType());
x.Serialize(fstream, t);
当我将一个类型为Thing
的对象序列化为XML时,得到的结果如下所示:
<Thing>
<ID>TH_001<ID>
<Name>My Test Thing</Name>
<Components>
<MyComponent>
<ComponentID>CMP_001</ComponentID>
<Name>Foo</Name>
</MyComponent>
<MyComponent>
<ComponentID>CMP_002</ComponentID>
<Name>Bar</Name>
<Subcomponents>
<MyComponent>
<ComponentID>CMP_001</ComponentID>
<Name>Foo</Name>
<MyComponent>
</Subcomponents>
</MyComponent>
<MyComponent>
<ComponentID>CMP_003</ComponentID>
<Name>Blergle</Name>
</MyComponent>
<MyComponent>
<ID>CMP_004</ID>
<Name>MasterComponent</Name>
<SubComponents>
<MyComponent>
<ComponentID>CMP_002</ComponentID>
<Name>Bar</Name>
<Subcomponents>
<MyComponent>
<ComponentID>CMP_001</ComponentID>
<Name>Foo</Name>
<MyComponent>
</Subcomponents>
</MyComponent>
<MyComponent>
<ComponentID>CMP_003</ComponentID>
<Name>Blergle</Name>
</MyComponent>
</SubComponents>
</MyComponent>
</Components>
</Thing>
正如你所看到的,有很多冗余。MasterComponent
包含所有其他组件的完整定义(还有相当多的其他字段,为了简洁起见,我省略了它们)。我希望看到像这样序列化它:
<Thing>
<ID>TH_001<ID>
<Name>My Test Thing</Name>
<Components>
<MyComponent>
<ComponentID>CMP_001</ComponentID>
<Name>Foo</Name>
</MyComponent>
<MyComponent>
<ComponentID>CMP_002</ComponentID>
<Name>Bar</Name>
<Subcomponents>
<MyComponent ID="CMP_001" />
</Subcomponents>
</MyComponent>
<MyComponent>
<ComponentID>CMP_003</ComponentID>
<Name>Blergle</Name>
</MyComponent>
<MyComponent>
<ID>CMP_004</ID>
<Name>MasterComponent</Name>
<SubComponents>
<MyComponent ID="CMP_002" />
<MyComponent ID="CMP_003" />
</SubComponents>
</MyComponent>
</Components>
</Thing>
在这种情况下,组件只被完全定义一次,然后通过ID引用它。我不太确定如何最好地处理这个问题,或者是否有更好的方法。
查看XML序列化属性。它们提供了一系列控制输出的选项。例如,如果您想将类属性序列化为属性,您可以添加一个XmlAttribute:
[XmlAttribute(AttributeName="id")]
private String componentID;