JMeter JSON Path Extractor expression issue while searching arrays

Question

My HTTP request returns an array similar to

[
{"id":"1", "data":"abc"},
{"id":"2", "data":"def"},
{"id":"3", "data":"ghi"}
]

As an input for a ForEach Controller I'm trying to extract the ids of above result into an array using a JSON Path Extractor with a Path expression of $..id. I'm expecting to get something similar to ["1", "2","3"] but the output I get is

ids=3
ids_matchNr=3

It appears that the JSON Path Extractor only matches/extracts the last occurrence of id instead of collecting all occurrences of the id values and adding them to an aray.

The same expression and data return the expected ["1", "2","3"] result array in jsonpath.curiousconcept.com so the expression seems to be correct.

Am I doing something wrong or is this a bug in the JSON Path Extractor?

Below are some screen prints for a little test

Dmitri T · Accepted Answer · 2017-03-30 04:16:27Z

1

I cannot reproduce your issue:

So double check you are using the latest version of JMeter and JSON Path Extractor, the latter one can be upgraded using JMeter Plugins Manager

answered Mar 30, 2017 at 4:16

Dmitri T

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5 Comments

Bernie Lenz Over a year ago

Thanks @Dmitri-T for the quick response. I Added a some screen prints of the test I created to the original post. The JMeter version I'm using is a fresh install which I downloaded just yesterday. Will check the JSON Path Extractor version in a little bit

Bernie Lenz Over a year ago

I installed the plugins manager and and upgraded to the latest JSON Path Extractor but still got the same results. Do you mind pasting a screen shot of your Path Extractor setup?

Dmitri T Over a year ago

Set "Match Numbers" to -1 and you should get the desired result. Just in case check out JMeter's JSON Path Extractor Plugin - Advanced Usage Scenarios article

Bernie Lenz Over a year ago

Oh man, that's it!!! Thanks so much. I read the article over and over and only in the comments does somebody mention the -1. Anyway, all good now.

hbobenicio Over a year ago

OMFG, thank you very much @DmitriT! I was hopeless after hours of searching on the web and docs and blogs about slicing an array with that json extractor and the only thing nobody mention is this -1! You saved me days of headaches

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