jmeter.JMeter: Error in NonGUIDriver java.lang.NullPointerException

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thrilochana kr

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Jan 28, 2015, 5:36:11 AM1/28/15
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Hi All,

I am trying to execute websocket sampler (https://github.com/maciejzaleski/JMeter-WebSocketSampler) tests. I get the following error. Could anyone please help?

2015/01/28 15:35:23 ERROR - jmeter.save.SaveService: Conversion error com.thoughtworks.xstream.converters.ConversionException: JMeter.plugins.functional.samplers.websocket.WebSocketSampler : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
---- Debugging information ----
message             : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
class               : org.apache.jorphan.collections.ListedHashTree
required-type       : org.apache.jorphan.collections.ListedHashTree
converter-type      : org.apache.jmeter.save.converters.HashTreeConverter
path                : /jmeterTestPlan/hashTree/hashTree/hashTree/JMeter.plugins.functional.samplers.websocket.WebSocketSampler
line number         : 29
------------------------------- : JMeter.plugins.functional.samplers.websocket.WebSocketSampler : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
---- Debugging information ----
message             : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
class               : org.apache.jorphan.collections.ListedHashTree
required-type       : org.apache.jorphan.collections.ListedHashTree
converter-type      : org.apache.jmeter.save.converters.HashTreeConverter
path                : /jmeterTestPlan/hashTree/hashTree/hashTree/JMeter.plugins.functional.samplers.websocket.WebSocketSampler
line number         : 29
-------------------------------
message             : JMeter.plugins.functional.samplers.websocket.WebSocketSampler : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
---- Debugging information ----
message             : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
class               : org.apache.jorphan.collections.ListedHashTree
required-type       : org.apache.jorphan.collections.ListedHashTree
converter-type      : org.apache.jmeter.save.converters.HashTreeConverter
path                : /jmeterTestPlan/hashTree/hashTree/hashTree/JMeter.plugins.functional.samplers.websocket.WebSocketSampler
line number         : 29
-------------------------------
cause-exception     : com.thoughtworks.xstream.converters.ConversionException
cause-message       : JMeter.plugins.functional.samplers.websocket.WebSocketSampler : JMeter.plugins.functional.samplers.websocket.WebSocketSampler
first-jmeter-class  : org.apache.jmeter.save.converters.HashTreeConverter.unmarshal(HashTreeConverter.java:65)
class               : org.apache.jmeter.save.ScriptWrapper
required-type       : org.apache.jorphan.collections.ListedHashTree
converter-type      : org.apache.jmeter.save.ScriptWrapperConverter
path                : /jmeterTestPlan/hashTree/hashTree/hashTree/JMeter.plugins.functional.samplers.websocket.WebSocketSampler
line number         : 29
version             : 2.11 r1554548
------------------------------- 
2015/01/28 15:35:23 ERROR - jmeter.JMeter: Error in NonGUIDriver java.lang.NullPointerException
at org.apache.jmeter.gui.tree.JMeterTreeModel.addSubTree(JMeterTreeModel.java:92)
at org.apache.jmeter.JMeter.runNonGui(JMeter.java:754)
at org.apache.jmeter.JMeter.startNonGui(JMeter.java:732)
at org.apache.jmeter.JMeter.start(JMeter.java:390)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.jmeter.NewDriver.main(NewDriver.java:259)

Mark Collin

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Mar 23, 2015, 4:13:45 PM3/23/15
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What does your POM look like?

Have you done this:


What output do you get from a:

mvn dependency:analyze 


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hemika....@gmail.com

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Apr 26, 2015, 9:02:36 AM4/26/15
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Were you able to get it fixed ?
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