JMeter JSON Extractor Cheatsheet

# via https://jmetervn.com/2016/09/17/json-path-postprocessor-in-jmeter/


# Extract Single Value
JSON Path expressions: $.store.book[0].author

# Output
FIRST_AUTHOR=Nigel Rees
FIRST_AUTHOR_matchNr=1


---


# Handle Multi-Match Number
JSON Path expressions: $.store.book[*].author
Match Numbers: -1

Where [*] mean all the value in book array

or

JSON Path expressions: $..author
Match Numbers: -1

# Output
AUTHOR_1=Nigel Rees
AUTHOR_2=Evelyn Waugh
AUTHOR_3=Herman Melville
AUTHOR_4=J. R. R. Tolkien
AUTHOR_matchNr=4


---


# Extract with a Condition
JSON Path expressions: $..[?(@.title == ‘The Lord of the Rings’)].price

Or 

$..[?(@.title == ‘${TITLE}‘)].price

Where
  [ ] – an array.
  ?( ) – applies a filter (script) expression.
  @.title == ‘The Lord of the Rings’ – the current object which has title as child with value ‘The Lord of the Rings’
    
# Output
PRICE=22.99
PRICE_matchNr=1


---


# Extract Multiple values with one PostProcessor
JSON Path expressions: $..bicycle.color;$..bicycle.price
Match Numbers: 1;1
Default Values: NOT_FOUND;NOT_FOUND

# Output
BIKE_COLOR=red
BIKE_COLOR_matchNr=1
BIKE_PRICE=19.95
BIKE_PRICE_matchNr=1