如何告诉 XStream 忽略具有“class”的子元素属性
我有一些由 XStream 生成的持久 XML，看起来像：
<CalculationDefinition>
<id>47</id>
<version>3</version>
<name>RHO error (pts)</name>
<expression class="com.us.provider.expression.AbsoluteValue">
....
</expression>
</CalculationDefinition>
我现在想以不同的方式持久保留此内容，并想告诉 XStream 完全忽略表达式元素。有很多链接讨论如何使用 MapperWrapper 执行此操作（例如 XStream JIRA）但据我所知，它不适用于具有“class”属性的元素。
这可以通过在 CalculationDefinition 中保留“表达式”字段来解决，但我宁愿不必将其保留在那里，因为它没有在代码中使用。
I have some persisted XML that was generated by XStream, and looks like:
<CalculationDefinition>
<id>47</id>
<version>3</version>
<name>RHO error (pts)</name>
<expression class="com.us.provider.expression.AbsoluteValue">
....
</expression>
</CalculationDefinition>
I want to persist this content differently now, and want to tell XStream to simply ignore the expression element entirely. There's many links around that talk about how to do this with a MapperWrapper (eg XStream JIRA) but as far I can tell it doesn't work for an element that has a 'class' attribute.
This can be worked around by leaving an 'expression' field in the CalculationDefinition, but I'd rather not have to keep it there now that it's not used in code.
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您可以使用 XSL 过滤传入的 XML 并删除表达式节点，然后再将其传递到 XStream。
You could filter the incoming XML using XSL and removing the expression nodes, before passing it to XStream.