JMeter - Changing user defined variables from command line

Question

I'm trying to update a "user defined variable" in a jmeter test plan using the command line

jmeter -n -t SimpleJmxExample.jmx -l log.jtl -Jtestproperty=202 

as you can see I'm using the -J argument. However it doesn't seem to make any difference? Is there a better/more accepted way of passing in different variables for a test plan?

Here is my jmx file

<?xml version="1.0" encoding="UTF-8"?> <jmeterTestPlan version="1.2" properties="2.1">   <hashTree>     <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">       <stringProp name="TestPlan.comments"></stringProp>       <boolProp name="TestPlan.functional_mode">false</boolProp>       <boolProp name="TestPlan.serialize_threadgroups">false</boolProp>       <elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">         <collectionProp name="Arguments.arguments"/>       </elementProp>       <stringProp name="TestPlan.user_define_classpath"></stringProp>     </TestPlan>     <hashTree>       <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group" enabled="true">         <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>         <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">           <boolProp name="LoopController.continue_forever">false</boolProp>           <stringProp name="LoopController.loops">1</stringProp>         </elementProp>         <stringProp name="ThreadGroup.num_threads">1</stringProp>         <stringProp name="ThreadGroup.ramp_time">1</stringProp>         <longProp name="ThreadGroup.start_time">1358160198000</longProp>         <longProp name="ThreadGroup.end_time">1358160198000</longProp>         <boolProp name="ThreadGroup.scheduler">false</boolProp>         <stringProp name="ThreadGroup.duration"></stringProp>         <stringProp name="ThreadGroup.delay"></stringProp>       </ThreadGroup>       <hashTree>         <HTTPSampler guiclass="HttpTestSampleGui" testclass="HTTPSampler" testname="Test Http Response Code" enabled="true">           <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" enabled="true">             <collectionProp name="Arguments.arguments"/>           </elementProp>           <stringProp name="HTTPSampler.domain">httpstat.us</stringProp>           <stringProp name="HTTPSampler.port"></stringProp>           <stringProp name="HTTPSampler.connect_timeout"></stringProp>           <stringProp name="HTTPSampler.response_timeout"></stringProp>           <stringProp name="HTTPSampler.protocol">http</stringProp>           <stringProp name="HTTPSampler.contentEncoding"></stringProp>           <stringProp name="HTTPSampler.path">/${testproperty}</stringProp>           <stringProp name="HTTPSampler.method">GET</stringProp>           <boolProp name="HTTPSampler.follow_redirects">true</boolProp>           <boolProp name="HTTPSampler.auto_redirects">false</boolProp>           <boolProp name="HTTPSampler.use_keepalive">true</boolProp>           <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>           <boolProp name="HTTPSampler.monitor">false</boolProp>           <stringProp name="HTTPSampler.embedded_url_re"></stringProp>         </HTTPSampler>         <hashTree>           <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="HTTP Header Manager" enabled="true">             <collectionProp name="HeaderManager.headers">               <elementProp name="Cache-Control" elementType="Header">                 <stringProp name="Header.name">Cache-Control</stringProp>                 <stringProp name="Header.value">max-age=0</stringProp>               </elementProp>               <elementProp name="Accept-Language" elementType="Header">                 <stringProp name="Header.name">Accept-Language</stringProp>                 <stringProp name="Header.value">en-US,en;q=0.8</stringProp>               </elementProp>               <elementProp name="Accept" elementType="Header">                 <stringProp name="Header.name">Accept</stringProp>                 <stringProp name="Header.value">text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8</stringProp>               </elementProp>               <elementProp name="User-Agent" elementType="Header">                 <stringProp name="Header.name">User-Agent</stringProp>                 <stringProp name="Header.value">Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11</stringProp>               </elementProp>               <elementProp name="Accept-Encoding" elementType="Header">                 <stringProp name="Header.name">Accept-Encoding</stringProp>                 <stringProp name="Header.value">gzip,deflate,sdch</stringProp>               </elementProp>               <elementProp name="Accept-Charset" elementType="Header">                 <stringProp name="Header.name">Accept-Charset</stringProp>                 <stringProp name="Header.value">ISO-8859-1,utf-8;q=0.7,*;q=0.3</stringProp>               </elementProp>             </collectionProp>           </HeaderManager>           <hashTree/>           <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="true">             <boolProp name="ResultCollector.error_logging">false</boolProp>             <objProp>               <name>saveConfig</name>               <value class="SampleSaveConfiguration">                 <time>true</time>                 <latency>true</latency>                 <timestamp>true</timestamp>                 <success>true</success>                 <label>true</label>                 <code>true</code>                 <message>true</message>                 <threadName>true</threadName>                 <dataType>true</dataType>                 <encoding>false</encoding>                 <assertions>true</assertions>                 <subresults>true</subresults>                 <responseData>false</responseData>                 <samplerData>false</samplerData>                 <xml>true</xml>                 <fieldNames>false</fieldNames>                 <responseHeaders>false</responseHeaders>                 <requestHeaders>false</requestHeaders>                 <responseDataOnError>false</responseDataOnError>                 <saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>                 <assertionsResultsToSave>0</assertionsResultsToSave>                 <bytes>true</bytes>               </value>             </objProp>             <stringProp name="filename"></stringProp>           </ResultCollector>           <hashTree/>           <Arguments guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">             <collectionProp name="Arguments.arguments">               <elementProp name="testproperty" elementType="Argument">                 <stringProp name="Argument.name">testproperty</stringProp>                 <stringProp name="Argument.value">200</stringProp>                 <stringProp name="Argument.metadata">=</stringProp>               </elementProp>             </collectionProp>           </Arguments>           <hashTree/>         </hashTree>       </hashTree>     </hashTree>   </hashTree> </jmeterTestPlan> 

Answer 1

Well, with -J argument you are setting PROPERTY, and in User Defined Variables config - VARIABLE. It will define two different entities, although having the same name, they will have different values.

In your situation you can do the following.

1. Set jmeter property value in command-line as above in your question

   ...-Jtestproperty=202

2. In UDV config set variable with value from property:

   testproperty = ${__property(testproperty,,)}

   or

   testproperty = ${__P(testproperty,)}

3. Use ${testproperty} further in the script.

As well you can possibly do the same wihout using variable and simply refer property as {__P(testproperty,)} to get value set in command-line.