两个元素之间的 XPath [英] XPath between two elements

问题描述

我有一个 Word 2003 XML 文档，我正在尝试在其中搜索某些元素.我已经能够执行简单的 XPath 查询来查找单个元素，但是我很难提出在两个元素之间进行搜索的查询:

I have a Word 2003 XML document that I am trying to search for certain elements in. I have been able to do simple XPath queries to find single elements, but I am having difficulty coming up with a query to search between two elements:

    <w:r>
      <w:fldChar w:fldCharType="begin"/>
    </w:r>
    <w:r>
      <w:instrText> DOCPROPERTY  EvidenceBase  \* MERGEFORMAT </w:instrText>
    </w:r>
    <w:r>
      <w:fldChar w:fldCharType="separate"/>
    </w:r>
    <w:r>
      <w:t>EvidenceBase</w:t>
    </w:r>
    <w:r>
      <w:fldChar w:fldCharType="end"/>
    </w:r>

我正在搜索上述 XML，其中有一个 w:r，其中有一个 w:fldChar，其属性为 w:fldCharType，值为begin".它应该返回每个元素，直到它遇到一个带有 w:fldChar 的 w:r，它的属性为 w:fldCharType，值为end".

I am searching for the above XML, that has a w:r with a w:fldChar in it which has an attribute of w:fldCharType with value of "begin". It should return every element until it hits a w:r with a w:fldChar in it which has an attribute of w:fldCharType with value of "end".

这可能吗?

推荐答案

//w:r[preceding-sibling::w:r[w:fldChar/@w:fldCharType='begin'] and following-sibling::w:r[w:fldChar/@w:fldCharType='end']]

请注意前缀 w 需要绑定到 XPath 表达式命名空间上下文的正确命名空间.如何完成取决于您如何使用 XPath(XSLT、Java、C#...).

Mind that the prefix w would need to be bound to the proper namespace for the XPath expression namespace context. How this is done depends on how you use the XPath (XSLT, Java, C#...).

此外，如果有多个可能嵌套的开始"和结束"标记，这会更复杂.

Also, this would be more complex if there's multiple, possibly nested "begin" and "end" markers.

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