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I would like to know how I use the regex in Jmeter to capture tokens from HTML. I have created a regex but it's not getting what I required.

My HTML code with the token is :

<html><head></head><body><script type="text/javascript">    fetch("../../cookie", {        method: "POST",        mode: "cors",        cache: "no-cache",        credentials: "include",        headers: {            "Content-Type": "application/json",        },        redirect: "follow",        referrerPolicy: "no-referrer",        body: JSON.stringify({ token: "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzeXN0ZW1pZCI6Im5pcnZhbmEtZGlyZWN0LW5hLXFhMyIsInBpZCI6IjE2NTgwMzQ5MjE4NjgtMUpyM3hhdHNHNElvQkgxNHBWOXZhNiIsImxhdW5jaGlkIjoiNExSRXBBUFFJMkFPN3ZwbUFwazd1MiIsImlhdCI6MTY1ODAzNDkyMywiZXhwIjoxNjU4MDM0OTgzLCJpc3MiOiJQU0kifQ.DjYRQHoPeax9toiE0aC0l2af4DZbSwLNuySrnytDq-I" }),    }).then((response) => {  if (!response.ok) throw new Error(response.statusText);     document.location.href = "../../../index.html";    }).catch((error) => {    console.log(`error: ${error}`);    });</script></body></html>

In need to extract the value in between double quotes of token.

The tried regex is : token: "[^"]*

I won't require token text in this.

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1 Answer 1

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The correct regular expression would be something like:

token:\s*"(.+?)"

where:

  • \s* - optional number of whitespaces
  • () - grouping
  • . - any character
  • + - repetition
  • ? - don't be "greedy", stop at the first match

Demo:

enter image description here

More information:

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