Using XPath to retrieve substring after specific text

I have an xml document with multiple nodes that looks something like this:

<Result> <Url></Url> </Result> <Result> <Url></Url> </Result> <Result> <Url></Url> </Result>

What I want to do is to retrieve the Topic ID after "Topic/" for all nodes. For the above example I am looking for the values 1,2 and 3. I can think of other ways to do it but I was wondering if there was a way to do it using XPath?

-------------Problems Reply------------

You can use substring-after paired with substring-before to just extract the number

This is the expression


Given your input (I added a root node to make it vaild)


this transform illustrates the result you want

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="">
<xsl:output indent="yes" method="xml"/>
<xsl:template match="@*|node()">
<xsl:apply-templates select="@* | node()"/>
<xsl:template match="Url">
<xsl:value-of select="substring-before(substring-after(.,''),'/')"/>



Depending on the context, you should replace . in the expression above with the path you need to access your node.

Use the string function substring-after, like so:


This'll return 1/

Category:xml Views:0 Time:2011-06-16
Tags: xml xpath

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