Process of Array of Strings in Beanshell preprocessor in Jmeter

Question

I have a Jmeter (version 4.0) test script where I am using json extractor to fetch an array of strings from the response json using $..Names and storing it in a variable groupOfNames. The various names are stored like groupOfNames_1, groupOfNames_2, groupOfNames_ALL.

I need to make POST call next with body as

{
"name1", "name2", "name3" (--actual values--)
}

How can i achieve this using bean shell preprocessor? groupOfNames_ALL gives me all value but like this.... name1, name2, name3 (without quotes surrounding individual names). Please help. Thanks.

may help full to you [stack answer for Jason conversion in java](https://stackoverflow.com/questions/5245840/how-to-convert-string-to-jsonobject-in-java?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa) — prat22, Apr 09 '18 at 11:40

score 3 · Answer 1 · answered Apr 09 '18 at 12:16

Put the below code in your BeanShell PreProcessor:

int matchNr = Integer.parseInt(vars.get("groupOfNames_matchNr"));

for(int i = 1; i <= matchNr; i++){
    String Names = vars.get("groupOfNames_" + i);
    if(i == matchNr){
        vars.put("AllNames", vars.get("AllNames") + "\"" + Names + "\"");
    }
    else if(i == 1){
        vars.put("AllNames","\"" + Names + "\", ");
    }
    else{
        vars.put("AllNames", vars.get("AllNames") + "\"" + Names + "\", ");
    }

Then use the variable ${AllNames} in your post as below:

{
${AllNames}
}

Your solution works fine and it solved my problem. Thanks a ton. — vaibhav misra, Apr 09 '18 at 19:08

score 3 · Accepted Answer · answered Apr 09 '18 at 12:33

3

I heard Groovy is the New Black so you can add quotation marks around each of names as simply as:

vars.put('groupOfNames_ALL',vars.get('groupOfNames_ALL').split(',').collect {"\"$it\""  }.join(', '))

Demo:

Also as a gentle reminder: JMeter users are encouraged to use JSR223 Test Elements for any form of scripting since JMeter 3.1

answered Apr 09 '18 at 12:33

Dmitri T

159,985
5
83
133

I have to mark your solution as the right answer as it achieved what i wanted in just a single line. Can you explain what collect and $it is doing in your solution? Thanks a lot anyways :) – vaibhav misra Apr 09 '18 at 19:10
You're asking for a story while I'm limited to a chapter. It is implicit parameter: http://groovy-lang.org/closures.html – Dmitri T Apr 09 '18 at 19:15
i googled a bit after i asked you and got a rough idea. i am not familiar with groovy so couldn't get it. Thanks for providing the link. It helps – vaibhav misra Apr 09 '18 at 19:30
@DmitriT thanks for this. have been looking for a couple of hours on how to solve this problem :D – Dymond Mar 28 '20 at 15:46

Process of Array of Strings in Beanshell preprocessor in Jmeter

2 Answers2