JMeter regex extractor forEach controller

4
votes

I'm creating some tests with JMeter, the situation is very simple, I have a search page with a list of results, and I have to retrieve from this results some values to use in the next request. Those results are around 350, I don't need them all.

I used the RegexExtractor to retrieve those results and it works (I setted it to retrieve just 10 results), but now I don't know how to access the results inside a LoopCounter. The extractor put the results into a variable named Result.

The problem is that I don't know hot to build dinamically the name of a variable. Do I have to use some function like _p()?? I can access the variable just putting the static name Result_0_g1

Inside the LoopCounter I putted also a Counter to store the loop count into the variable index

Thank you

EDIT:

SOLVED I have to write:

${__V(Result_${index}_g1)

4
variablesjmeter
The solution given here by the OP might work in context but it won't handle no matches on the regex and is generally needlessly complicated in comparison to jmeter's built-in solution. – Oliver Lloyd
...You can post your solution as answer and accept it to close the issue - if you believe it's solved. – Aliaksandr Belik
mm which are the built-in solution in this case? I've tried with the ForEach controller but it doesn't seem work – rascio

4 Answers

5
votes

You have to reference the variable with the function:

${__V(Result_${index}_g1)
1
votes

...Just for collection.
See also this post for another implementation (case without using ForEach Controller):

ThreadGroup 
    HttpSampler 
        Regex Extractor (variableName = links) 
    WhileController(${__javaScript(${C} < ${links_matchNr})}) 
        HTTPSampler use ${__V(links_${C})} to access the current result 
        Counter (start=1, increment=1, maximum=${links_matchNr}, referenceName=C)
0
votes

Use the ForEach Controller - it's specifically designed for this purpose and does exactly what you want.

0
votes

You may use ForEach Controller:

ThreadGroup
    YourSampler
        Regular Expression Extractor (match -1, any template)
    Foreach controller
        Counter(Maximum -> ${Result_matchNr} , Rf Name -> index)
        LinkSamplerUsingParsedData(use -> ${__V(Result_${index}_g1)}

Now, if you want to iterate to all groups, you need another foreach to do that. As you know which group represent what value, you can use this way.