xml XPath 根据孩子的子值选择元素
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XPath to select element based on childs child value
提问by James Walsh
Trying to select an element based on the value of one of it's childrens childrens
试图根据其中一个孩子的孩子的值来选择一个元素
Thinking the following but not working, appreciate any help, thanks
考虑以下但不起作用，感谢任何帮助，谢谢
./book[/author/name = 'John']or
./book[/author/name = 'John']或者
./book[/author/name text() = 'John']
Want all books where the author name = 'John'
想要所有作者姓名 = 'John' 的书
Xml file
xml文件
<list>
<book>
<author>
<name>John</name>
<number>4324234</number>
</author>
<title>New Book</title>
<isbn>dsdaassda</isbn>
</book>
<book>...</book>
<book>...</book>
</list>
回答by AakashM
Almost there. In your predicate, you want a relativepath, so change
差不多好了。在你的谓词中，你想要一个相对路径，所以改变
./book[/author/name = 'John']
to either
要么
./book[author/name = 'John']
or
或者
./book[./author/name = 'John']
and you will match your element. Your current predicate goes back to the root of the document to look for an author.
你会匹配你的元素。您当前的谓词返回到文档的根目录以查找author.
