xslt 和 xpath:匹配前面的注释 [英] xslt and xpath: match preceding comments

问题描述

给定这个xml:

<root>
    <list>
        <!-- foo's comment -->
        <item name="foo" />
        <item name="bar" />
        <!-- another foo's comment -->
        <item name="another foo" />
    </list>
</root>

我想使用 XPath 来选择所有紧跟在它们之前有注释的项目节点，也就是说，我喜欢选择foo"和另一个 foo"项目，而不是bar"项目.

I'd like to use a XPath to select all item-nodes that have a comment immediately preceding them, that is I like to select the "foo" and "another foo" items, but not the "bar" item.

我已经摆弄过前面的兄弟轴和 comment() 函数，但无济于事.

I already fiddled about the preceding-sibling axis and the comment() function but to no avail.

推荐答案

这似乎有效:

//comment()/following-sibling::*[1]/self::item

它寻找紧随其后的注释兄弟姐妹，这些兄弟姐妹也是 元素.我不知道更好的方式来表达 ::*[1]/self::item 部分，这很丑陋；请注意，如果它是写成 ::item[1] 那么它也会发现 s not immediately 由注释处理.

It looks for immediately following siblings of comments which are also <item> elements. I don't know a better way to express the ::*[1]/self::item part, which is ugly; note that if it were written ::item[1] then it would also find <item>s not immediately proceded by a comment.

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