XPath 1.0查询JAXB对象？ [英] XPath 1.0 queries on JAXB objects?

问题描述

JAXB非常棒，真正节省时间，但遍历生成的对象树仍然非常耗时;几乎与直接使用DOM一样糟糕。

JAXB has been great, a real timesaver, but it's still really time consuming to traverse the resulting object trees; almost as bad as working directly with the DOM.

有没有办法可以在JAXBElement上进行XPath 1.0查询，而不必每次都要在DOM模型上精心编组文档？

Is there a way that I can do XPath 1.0 queries on a JAXBElement, without having to painstakingly marshal the document to and from a DOM model each time?

推荐答案

不直接，没有。但是，您可以使用 Apache Commons Jxpath ，它允许您跨任意对象图运行XPath查询，而不是只是JAXB绑定的。它可以在宽松模式下运行，该模式可以容忍空值。

Not directly, no. However, you can use Apache Commons Jxpath, which allows you to run XPath queries across arbitrary object graphs, not just JAXB-bound ones. It can be run in "lenient" mode, which is tolerant of nulls.

非常便于替换那些易于发生NPE的图导航。

Extremely handy for replacing those NPE-prone graph navigations.

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