Pass the JSON extractor Ref name to another request sequentailly in Jmeter which is outside the loop

Question

I have used While controller in Jmeter and fetching the data (i.e JSON _id values) one by one from the Response. total there are 50 Id's/per response.

E.g. "_id: "57565556654","_id":"68676665555", "_id": "87686877545"

Http Request - When this request is submitted I am getting _id from the response. Used JSON extractor to fetch the _id's from the Response. i.e. 50 ids. Ref Name = DeleteQuestionsID

In Debug Sampler DeleteQuestionsID_MatchNr shows DeleteQuestionsID_MatchNr =1, bcoz JSOn extarctor is running inside While loop

I need to Pass these 50 Id's one by one to Next Http request which is outside the While loop.

Http Request : `'/v1/tests/'$'{TestID}/questions/${DeleteQuestionsID}

`How to achieve this?

Dmitri T Dmitri T · Accepted Answer · 2019-08-26T13:41:28

You can save the values into JMeter Variables by adding JSR223 PostProcessor after the JSON Extractor and using the following code:

vars.put('DeleteQuestionsID_' + vars.get('__jm__While Controller__idx'), vars.get('DeleteQuestionsID'))

It will generate 50 JMeter Variables like:

DeleteQuestionsID_0=foo
DeleteQuestionsID_1=bar
DeleteQuestionsID_2=baz
etc.

which can re-use later on where required.

vars is a shorhand for JMeterVariables class instance, it provides read/write access to all JMeter Variables in scope, check out Top 8 JMeter Java Classes You Should Be Using with Groovy for more information on this and other JMeter API shorthands available for JSR223 Test Elements.

Pass the JSON extractor Ref name to another request sequentailly in Jmeter which is outside the loop

2 Answers