如何使用XPath匹配以数字结尾的字符串 [英] How to match string that ends with a number using XPath

问题描述

问题是我正在构建一个XPath表达式，以获取具有属性XXX的节点，其值为TP *，其中星号是数字。
假设我有这个XML文件

The issue is that I'm looking to construct an XPath expression to get nodes having attributes XXX having values like TP* where the star is a number. Suppose I have this XML file

<tagA attA="VAL1">text</tagA>
<tagB attB="VAL333">text</tagB>
<tagA attA="VAL2">text</tagA>
<tagA attA="V2">text</tagA>

所以xpath表达式应该让我全部 tagA 具有属性 attrA ，其值为 VAL *

// tagA [@attrA [matches（'VAL\d'）]] ：不工作

So the xpath expression should get me all tagA having attribute attrA with values with the pattern VAL*
//tagA[@attrA[matches('VAL\d')]] : is not working

请帮忙吗？

推荐答案

如果您需要XPath 1.0解决方案，请尝试以下：

If you need XPath 1.0 solution, try below:

//tagA[boolean(number(substring-after(@attA, "VAL"))) or number(substring-after(@attA, "VAL")) = 0]

如果 @attA 不能 VAL0，然后只是

//tagA[boolean(number(substring-after(@attA, "VAL")))]

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