I did read few responses but my regular expression extractor is not working.
Mine is a simple case where this is my response
token.id=AQIC5wM2LY4Sfcz4cOT2RrremxWJmM3llZmPl6k0bP_r5D4.AAJTSQACMDUAAlNLABQtNDI1OTg4NzgxODg5MDM1ODU2NQACUzEAAjI3
I am trying to grab the value using this expression
token.id="(.*?)"
which is not saving the value into the variable i assigned. My next request when trying to use the value fails since its not grabbing it.
Can someone let me know what exactly is missing. thanks.
There are few problems with your regular expression:
You need to escape dot between "token" and "id" with backslash as it is a special character. See Literal Characters article for more information.
You don't need the quotations marks as your response doesn't contain them (does it?)
So your regular expression needs to be amended as token\.id=(.*) (however I would rather go for something like token\.id=(\w.+)
You can use View Results Tree listener in "RegExp Tester" mode to test your regular expressions directly against response without having to re-run the request.
See Regular Expressions JMeter documentation chapter and How to debug your Apache JMeter script guide for extended information on the above approaches.
Related
this works, but how can I ignore the quotation marks in the form of my token "token"
i don't want him to get the quotation marks
I would use Boundary Extractor
Put Left and Right Boundary as " and you will get the value
Allows the user to extract values from a server response using left and right boundaries. As a post-processor, this element will execute after each Sample request in its scope, testing the boundaries, extracting the requested values, generate the template string, and store the result into the given variable name
You need to provide the Template and specify the capturing group (in your case it will be 1)
More information:
JMeter: Regular Expressions
Using RegEx (Regular Expression Extractor) with JMeter
working in this way. maybe you will need it!
I have issue with debug sampler not showing regular expression extractor in Jmeter. Kindly refer the tree below:
Here is the information in my regular expression extractor:
There's no regular expression variables shown in debug sampler output:
Can help to see what's the real issue here? FYI I'm scripting using webtours demo website & havent parameterize username and password yet coz i want to make sure my correlation works first. Thanks.
Without seeing the response it's hard to say what is wrong, most probably your Regular Expression Extractor fails somewhere somehow, as per documentation:
Template
The template used to create a string from the matches found. This is an arbitrary string with special elements to refer to groups within the regular expression. The syntax to refer to a group is: '$1$' to refer to group 1, '$2$' to refer to group 2, etc. $0$ refers to whatever the entire expression matches.
so for sure you need to change $1 to $1$
Using regular expressions for parsing HTML is not the best idea, I would recommend consider using CSS Selector Extractor instead, the relevant configuration would be something like
I don't think your PostProcessor placement is correct, it's a Post processor so according to the JMeter test elements execution order it is executed after the sampler and you're trying to use the variable in the same request. So my expectation is that you need to move it under the "Homepage" sampler
Add HTTP Cookie Manager to your Test Plan
I have recorded a workflow in Jmeter using Recording controller.
In that workflow, a URL parameter 'member_id' get generated and appear in URL.
This 'member_id' is getting used further in the workflow.
In the recorded script, value of 'member_id' is saved in a variable. Screenshot
Here the problem is; When I execute the scripts, then instead of newly generated 'member_id', the saved value is getting used in the later samples.
I want to fetch the new value and update the saved value, so that it can be used in later samples
I have tried to fix this issue by fetching the 'member_id' from the URL and save it in a variable
I have tried 'Regular Expression Extractor' but I am not able to read the value.
Screenshot
But when I print the response, I am getting only first digit of new 'member_id'.
Screenshot
You're using wrong regular expression, it stops whenever it finds the first match
According to the JMeter documentation on Regular Expressions:
( and ) these enclose the portion of the match string to be returned
. match any character
+ one or more times
? don't be greedy, i.e. stop when first match succeeds
So the solution will be to remove the question mark from your regular expression:
member_id=(.+)
or even better, if you're looking for numbers you should limit your search criteria to digits only like:
member_id=(\d+)
References:
Using RegEx (Regular Expression Extractor) with JMeter
Perl 5 Regex Cheat sheet
How can I extract the response using a regular expression for Jmeter.
Jmeter is not extracting the response item that I want to extract. I've tried several times, but I failed. How can I extract the response item?
Response data is as shown in the screenshot:
The value which I need to extract has been highlighted.
I tried extracting using the following expression, but it failed:
<h2>.+?<a hfref="http://(.+?)">.+?</a>.</h2>
Please follow the below steps to extract the Id value.
In your Regular Expression Extractor, configure below details. Use the regular expression as Public/FormsPreview.aspx\?Id\=(.+?)& to retrieve the Id.
You can use other unique left/right boundaries as well, as your regular expression.
How to validate your regular expression extractor?
To validate your regular expression extractor, add a Debug Sampler (Right Click on your thread group > Add > Sampler > Debug Sampler)
Execute the test plan
In View Results Tree you can see the c_ID value as shown below.
Depending on how vary can result be (I mean, how the form is changing? is that only querystring Id parameter that is different? could there be another response (than Object Moved) with Id that you don't want to parse? etc.), the regular expression in the Regular Expession Extractor Post-Processor (which fits best here) would be different.
From simplest context-agnostic, Id=(\d+) (that is considering you have numeric Id), to making it case-insensitive (?i)Id=(\d+) and/or alphanumeric Id=([0-9a-zA-Z]+), or even whatever symbols are in (but you'd be forced to start to include context in this case ) Id=(.+?)& - and up to one that uses broader context evaluating the whole multiline stuff, like (?im)<title>Object\smoved</title>.+<a\shref=.+Id=(\d+)
And don't forget to use $1$ as your Template and take the Match 1.
I suggest you to stick to the most narrow and most context-agnostic one you can afford (the very first example here).
Add some assertions to make sure you're on the right page - despite the fact they executed after post-processors, you'd see something is wrong, at least.
You can add regular expression extractor like following
I have a link in my Request -
example.com/people/3176972
and my regular expression extractor is-
Regular expression: example.com/people/(.+?)
Template: $1$
Match no: 1
but it is only extracting only 3. I want to extract 3176972 number.
What am I doing wrong?
If you want to retrieve anything after the last slash, then just remove question mark from your expression:
example.com/people/(.+)
(question mark tells it to be non-greedy, hence it's taking 1 character).
If the last portion is always numeric, use
example.com/people/([0-9]+)
You should try this regular expression:
[0-9]+
Amend your regular expression to look like example.com/people/(.*) or example.com/people/(\d+) as your regex stops after first match.
See Regular Expressions chapter of JMeter's User Manual for more information on JMeter Regular Expressions.
Convenient way of testing regular expressions is using "RegExp Tester" mode of the View Results Tree listener.
Check out How to debug your Apache JMeter script guide for more information on different debugging techniques for JMeter tests.