i'm new in jmeter and i found that jmter json extractor can get data from the json respon, i already used the json extractor and i got the json path expression like this
my question, can i use the $.key as body data request "temporaryKey" variables?
Sure just replace the value with
${Temporary_key}
JMeter Variable reference, JMeter will resolve the variable value and replace it in the runtime.More information:
Variabilize and Correlate the script
API Testing With JMeter and the JSON Extractor