xml XPath count() 函数
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时间：2020-09-06 13:26:51 来源:igfitidea点击:
XPath count() function
提问by emen
Suppose I have an XML tree as below:
假设我有一个 XML 树，如下所示：
proceedings
-name
-contents
-article
-author
-title
-pages
How can I identify any title that has only one author? And the number of articles that have more than three author using xpath?
如何识别只有一个作者的任何标题？使用 xpath 的作者超过三个的文章数量？
回答by Francis Avila
Title with one author:
一位作者的标题：
/proceedings/contents/article[count(author)=1]/title
Number of articles with more than three authors:
三名以上作者的文章数：
count(/proceedings/contents/article[count(author)>3])
