Bug 65259

Summary:	JMESPathExtractor Attribute Match No. Required
Product:	JMeter - Now in Github	Reporter:	Dietmar Berchtold <dietmar.berchtold>
Component:	Main	Assignee:	JMeter issues mailing list <issues>
Status:	RESOLVED FIXED
Severity:	minor	Keywords:	FixedInTrunk
Priority:	P2
Version:	5.4.1
Target Milestone:	JMETER_5.5
Hardware:	PC
OS:	All
Attachments:	JMX to reproduce error Screenshot showing missing value

Description Dietmar Berchtold 2021-04-22 09:31:50 UTC

Created attachment 37821 [details]
JMX to reproduce error

According to the documentation https://jmeter.apache.org/usermanual/component_reference.html#JSON_JMESPath_Extractor "Match No." is not required. But if no value is given an exception occures.

Steps to reproduce:
- run attached JMX file ("Match No." is empty for JMESPathExtractor )
- found: no value is exptracted, Error log is written

Solution 1: update documentation and mark as Required
Solution 2: use 0 as default value as in "JSON Extractor"


found log entry:
ERROR o.a.j.t.JMeterThread: Error while processing sampler: 'jp@gc - Dummy Sampler'.
java.lang.NumberFormatException: For input string: ""
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:68) ~[?:?]
	at java.lang.Integer.parseInt(Integer.java:662) ~[?:?]
	at java.lang.Integer.parseInt(Integer.java:770) ~[?:?]
	at org.apache.jmeter.extractor.json.jmespath.JMESPathExtractor.process(JMESPathExtractor.java:66) ~[ApacheJMeter_components.jar:5.4.1]
	at org.apache.jmeter.threads.JMeterThread.runPostProcessors(JMeterThread.java:955) ~[ApacheJMeter_core.jar:?]
	at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:573) ~[ApacheJMeter_core.jar:?]
	at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489) [ApacheJMeter_core.jar:?]
	at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) [ApacheJMeter_core.jar:?]
	at java.lang.Thread.run(Thread.java:832) [?:?]

Comment 1 Dietmar Berchtold 2021-04-22 09:36:00 UTC

Created attachment 37822 [details]
Screenshot showing missing value

Comment 2 Felix Schumacher 2021-04-24 10:59:15 UTC

Thanks for the report. I chose to take route 2 and use "0" as the default.

Would you be able to test the next nightly or trunk build?

commit b5a3c9113e0ca084b749afdd55a526a285272ae7
AuthorDate: Sat Apr 24 11:45:56 2021 +0200

    JMESPathExtractor Attribute Match No. Required
    
    Bugzilla Id: 65259
---
 .../jmeter/extractor/json/jmespath/JMESPathExtractor.java    |  7 ++++++-
 .../extractor/json/jmespath/TestJMESPathExtractor.java       | 12 ++++++++++++
 xdocs/changes.xml                                            |  1 +
 3 files changed, 19 insertions(+), 1 deletion(-)

Comment 3 Dietmar Berchtold 2021-04-27 08:55:32 UTC

Thanks for solving the issue. 
I hopped you will choose door 2 and use "0" as default :)

I checked using build https://ci-builds.apache.org/job/JMeter/job/JMeter-trunk/254/ and can confirm issue is solved.

Comment 4 The ASF infrastructure team 2022-09-24 20:38:22 UTC

This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/5523