How to extract multiple named values from a JSON object with jMeter

Question

I want to extract all the serviceItemId's, this object I got it from an external system and I have to verify the contents are correct or not.

The used JSON Object:

[
    [
        {
            "serviceItemId": "SGR40400002",
            "deliveryId": "1",
            "unitOfMeasure": "ORDERS"
        },
        {
            "serviceItemId": "SGR40400003",
            "deliveryId": "2",
            "unitOfMeasure": "ORDERS"
        },
        {
            "serviceItemId": "SGR40400002",
            "deliveryId": "3",
            "unitOfMeasure": "ORDERS"
        }
    ]
]

How do I extract all the serviceItemId's?

Answer 1

You can do this using JSON Extractor

1. Add JSON Extractor as a child of the request which returns the above JSON

2. Configure it as follows:

   

3. That's it, now you have all serviceItemId values extracted into the following JMeter Variables:

   serviceItemId_1=SGR40400002
   serviceItemId_2=SGR40400003
   serviceItemId_3=SGR40400002
   serviceItemId_matchNr=3
   

   

4. You can now verify their values using Response Assertion