Use XPath in JMeter to get attribute value

Question

Below is a sample response from JMeter tool.

<input name="requestId" type="hidden" value="-1859748216"/>

I try the following XPath //input[@name='requestId'], but it doesn't work, I would like to take only the numeric value -1859748216

Answer 1

You need to get the value attribute using /@value

//input[@name='requestId']/@value

Prefer using newer/improved XPath2 Extractor over XPath Extractor

Answer 2

If you really want to use XPath, you need something like //input[@name='requestId']/@value

However XPath Extractor is quite resource intensive as it keeps entire DOM in memory, when it comes to getting the values from HTML content I would rather recommend going for CSS Selector Extractor leaving XPath for XML or when CSS Selectors are not powerful enough

Example setup:

More information:

• CSS Selectors Reference
• How to Use the CSS/JQuery Extractor in JMeter