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
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 need to extract 2 dynamic values from the URL -
id
I used the regular expression (.+?) and added to path - /blazor?${id}
I see invalid character error in View results tree.
the number after &_ which changes for each request.
Is it possible to extract a value which changes continuously? How can it be implemented?
Sample URL's:
https://abc.abc.com:8443/_blazor?id=jTl2weD7HcQIS78PcBHbVg&_=1606828427324
https://abc.abc.com:8443/_blazor?id=jTl2weD7HcQIS78PcBHbVg
https://abc.abc.com:8443/_blazor?id=jTl2weD7HcQIS78PcBHbVg&_=1606828427575
https://abc.abc.com:8443/_blazor?id=jTl2weD7HcQIS78PcBHbVg&_=1606828427756
https://abc.abc.com:8443/_blazor?id=jTl2weD7HcQIS78PcBHbVg&_=1606828427885
This number is utterly like to be a current timestamp so instead of extracting you can use JMeter's __time() function for generating it:
If you use just (.+?) - it will match the first character in the URL (which is h) and then stop, if you want to get the ID the relevant regular expression should be something like:
id=(.+?)&
similarly for the timestamp (or whatever it is)
_=(\d+)
or if you want everything after blazor?
_blazor?(.*)
If you're not too comfortable with regular expressions you may find Boundary Extractor easier to use, all you need to do is to provide "left" and "right" boundaries and it will capture everything "in between":
as a little bonus - it works much faster and consumes less resources. More information - The Boundary Extractor vs. the Regular Expression Extractor in JMeter
I need to extract value from the response body text and need to add that value for another request. I need to write a regular expression to capture the below-mentioned value.
<id>45893943</id>
If you're looking for a regular expression - it would be something like <id>(\d+)</id> where:
d - matches any number
+ - repetition
It might be easier for you to consider Boundary Extractor as it's configuration is more simple and it acts much faster, just provide <id> as the left boundary and </id> as the right boundary and JMeter will extract everything between the boundaries:
And last but not the least, using regular expressions for parsing HTML or XML is not the best idea, you might want to use CSS Selector Extractor or XPath Extractor instead, however we need to see the full response in order to be able to come up with the best solution
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.