I have created an regular expression to extract CSRF token from the HTTP Headers and storing the value in the reference name CSRF_TOKEN by following this How to Load Test CSRF-Protected Web Sites
I using this variable in POST Parameters of another HttpRequest as below
csrfmiddlewaretoken=${CSRF_TOKEN}
Here ${CSRF_TOKEN} is not getting evaluated and the server is getting the middleware token as csrfmiddlewaretoken=%24%7BCSRF_TOKEN%7D
It got resolved. I identified that, if the regular expression is not matching any value and there is no default value specified, then JMeter is not treating as a dynamic variable. I corrected it by fixing regular expression. it starts working. Thank you.
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In my JMeter script I have a request which uses a token as part of the request body:
I've got a regex extractor to retrieve this value but I can't seem to get it back. I've tested using all the "Field to check" values e.g. Request Header etc. The regext I'm using is "token=(.*?)"
This token is needed as other calls explicitly reference it and I need to pass them this variable
Switch "Field to check" to URL as in your case the token is not in the request body, it's in URL's Query String
Amend your regular expression to look like: token=(.*)
This way you will get the token value into the ${TOKEN} JMeter Variable.
More information:
JMeter: Regular Expressions
Using RegEx (Regular Expression Extractor) with JMeter
Perl 5 Regex Cheat sheet
Query parameters are part of the url, so choose URL as Field to check
Also you are building the URL, so can't you use save the token value before?
I am wondering how I can use a dynamic variable in the Path field of a HTTP request . I am able to use User Defined Variables, but they are static, I need to use a variable that extracts some unpredictable value from the response of a previous HTTP request. I.e. the URL in the below scenario resolves literally to /this/and/that.jspx?param1=${testvar} , so you can see ${testvar} is not being substituted. How do I get ${testvar}, a variable created during regex extraction in a previous HTTP Request, to be substituted?
FYI I am using JMeter 2.11 and upgrading may not be an option (corporate policies... )
JMeter Variables resolution/substitution works normally no matter of JMeter version, I can think of 2 possible reasons:
You're looking into wrong place. You should be inspecting Request tab of the View Results Tree listener in order to see the actual URL
Your ${testvar} variable is not defined, i.e. Regular Expression Extractor fails to extract the required value. You can double check it using Debug Sampler:
New to JMeter, and I'm probably missing some simple thing but I can't find it anywhere.
I'm trying to log into a web application so I send a GET request to the home page to retrieve the csrf token and then I use the regular expression extractor to retrieve it:
I then try to place the extracted token into the POST request:
But the extracted token doesn't show up in the request sent via the View Results Tree. Only the UserId and Password are passed which I manually defined:
My regular expression is finding a match as you can see here:
but even if it wasn't finding a match, it should still pass "NotFound" correct?
Any help is greatly appreciated!
Edit: Added a Debug Sampler and it is correctly showing the variable Token with it's correct value. So Token just isn't being added to the request via the RegEx User Parameter Pre Processor.
It's difficult to see what you're doing without seeing the LoginPage step, but you need to make sure you are adding the csrf token you've extracted in the right place.
Typically it could be as a query param, part of a post body or an http header.
As you can see the token has been extracted from your initial response in the Debug sampler, there must be something wrong in how or where the token is being applied to the LoginPage request. (As you say the RegEx User Parameter Pre Processor isn't adding it)
I've never used the PreProcessor and the Jmeter documentation explanation is a bit vague on what it does, but you can add the variables into your request without it using the variable saved for the capture groups - for input name this will be ${Token_g1} and for value it will be ${Token_g2} - which you will be able to see from the Debug Sampler. You'll need to add a Header or Cookie Manager to the Login Page element if this is where the token is.
By setting the template in the Extractor to $1$$2$ you create a variable with the name and value concatenated together. I'm not sure why you would need this, and I would guess that the name doesn't change - in which case you can just use capture group 2, or if you want to use the Variable name Token then update your template to be $2$
I am new to jmeter. Can anyone help me to use a response object of one request to be passed as a request header of next HTTP request ?
Let me explain.
I am getting an access token along with the response of login in my app:
{: "responseCode":18, : "message":"Successfully logged in.", : "responseObject":"8zWExE4eSdhcJDwnW9MgIw=="}
No I want to use this access token (8zWExE4eSdhcJDwnW9MgIw) as one of the parameter of next request.
I used JSON Path Extractor for this.But its not working.
I am using JSON Path Extractor as well and it works great if it is properly configured.
Just put it into request and fill fields:
Variable Name: access_token (or any other you want to use later in request like this ${access_token})
JSON Path: responseObject should be enough if the JSON you pasted is full response (thjose additional colons are just some mistakes when copy-pasting or the JSON is corrupted?)
Default Value: I always use some value like 'NotUpdated!' here so I can assert in the next step or at least see it easily in request.
Not seeing the full response it is quote hard to come up with a correct JSON Path expression.
Given what you posted it should be something like $.responseObject
See JSON Path Syntax guide for queries syntax examples and Using the XPath Extractor in JMeter (scroll down to "Parsing JSON") for plugin installation instructions and XPath to JSON syntax mapping.
Just in case anybody would face an issue with multiple variable extractions using JSON Extractor (like me), make sure to:
List the names of variables/path expressions/default values using a semicolon as a separator.
Provide default values for every variable.
The second point is apparently required, and I only found out about it from this
Medium post.
I have to do performance testing for ipad application.
There is scenario in which i have to read the token id from the response and use this token id in my next request.
I used the regular expression extractor, but when i used the variable in next request i.e. ${tokenid}, it wasn't replaced with the captured value. When i look at View Result tree, it is simply requesting the variable instead of token.
Here is the regular expression extractor
There is at least an error where you must check:
Body
instead of checking :
Response Code
in Regular Expression Extractor
You can use View Result to check your regexp:
Finally regexp should be:
"Token":"([^"]+?)"