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您能否告诉我如何每次运行线程时清除/重置由Simple Data Writer写入的csv文件？ 当前每次运行线程时，都会将新结果追加到旧结果的末尾。我是新手，谢谢你的帮助。在jmeter中清除简单数据写入器的csv文件
代码
<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="2.4" jmeter="2.9 r1437961">
<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">true</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-1" 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">1371005294000</longProp>
<longProp name="ThreadGroup.end_time">1371005294000</longProp>
<boolProp name="ThreadGroup.scheduler">false</boolProp>
<stringProp name="ThreadGroup.duration"></stringProp>
<stringProp name="ThreadGroup.delay"></stringProp>
</ThreadGroup>
<hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="GET Patient list" enabled="true">
<elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
<collectionProp name="Arguments.arguments"/>
</elementProp>
<stringProp name="HTTPSampler.domain">http://sampleurl</stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
<stringProp name="HTTPSampler.protocol"></stringProp>
<stringProp name="HTTPSampler.contentEncoding"></stringProp>
<stringProp name="HTTPSampler.path">http://sampleurl</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>
</HTTPSamplerProxy>
<hashTree>
<AuthManager guiclass="AuthPanel" testclass="AuthManager" testname="HTTP Authorization Manager" enabled="true">
<collectionProp name="AuthManager.auth_list">
<elementProp name="" elementType="Authorization">
<stringProp name="Authorization.url">http://sampurl</stringProp>
<stringProp name="Authorization.username">samp</stringProp>
<stringProp name="Authorization.password">samp</stringProp>
<stringProp name="Authorization.domain"></stringProp>
<stringProp name="Authorization.realm"></stringProp>
</elementProp>
</collectionProp>
</AuthManager>
<hashTree/>
<RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="Regular Expression Extractor" enabled="true">
<stringProp name="RegexExtractor.useHeaders">false</stringProp>
<stringProp name="RegexExtractor.refname">Ary</stringProp>
<stringProp name="RegexExtractor.regex">\[([^\]]+)\]</stringProp>
<stringProp name="RegexExtractor.template">$1$</stringProp>
<stringProp name="RegexExtractor.default"></stringProp>
<stringProp name="RegexExtractor.match_number">1</stringProp>
</RegexExtractor>
<hashTree/>
<RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="Parse ECN array" enabled="true">
<stringProp name="RegexExtractor.useHeaders">false</stringProp>
<stringProp name="RegexExtractor.refname">vals</stringProp>
<stringProp name="RegexExtractor.regex">"([^"]+)"</stringProp>
<stringProp name="RegexExtractor.template">$1$</stringProp>
<stringProp name="RegexExtractor.default"></stringProp>
<stringProp name="RegexExtractor.match_number">-1</stringProp>
<stringProp name="Scope.variable">PatientArray</stringProp>
<stringProp name="Sample.scope">variable</stringProp>
</RegexExtractor>
<hashTree/>
</hashTree>
<DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="RegX output" enabled="true">
<boolProp name="displayJMeterProperties">false</boolProp>
<boolProp name="displayJMeterVariables">true</boolProp>
<boolProp name="displaySystemProperties">false</boolProp>
</DebugSampler>
<hashTree/>
<ForeachController guiclass="ForeachControlPanel" testclass="ForeachController" testname="ForEach Controller" enabled="true">
<stringProp name="ForeachController.inputVal">vals</stringProp>
<stringProp name="ForeachController.returnVal">userid</stringProp>
<boolProp name="ForeachController.useSeparator">true</boolProp>
</ForeachController>
<hashTree>
<DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="${userid}" enabled="true">
<boolProp name="displayJMeterProperties">true</boolProp>
<boolProp name="displayJMeterVariables">true</boolProp>
<boolProp name="displaySystemProperties">false</boolProp>
</DebugSampler>
<hashTree>
<ResultCollector guiclass="SimpleDataWriter" testclass="ResultCollector" testname="Simple Data Writer" enabled="true">
<boolProp name="ResultCollector.error_logging">false</boolProp>
<objProp>
<name>saveConfig</name>
<value class="SampleSaveConfiguration">
<time>false</time>
<latency>false</latency>
<timestamp>false</timestamp>
<success>false</success>
<label>true</label>
<code>false</code>
<message>false</message>
<threadName>false</threadName>
<dataType>false</dataType>
<encoding>false</encoding>
<assertions>false</assertions>
<subresults>false</subresults>
<responseData>false</responseData>
<samplerData>false</samplerData>
<xml>false</xml>
<fieldNames>false</fieldNames>
<responseHeaders>false</responseHeaders>
<requestHeaders>false</requestHeaders>
<responseDataOnError>false</responseDataOnError>
<saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>
<assertionsResultsToSave>0</assertionsResultsToSave>
</value>
</objProp>
<stringProp name="filename">C:\Documents and Settings\valliammaim\My Documents\Downloads\apache-jmeter-2.9\apache-jmeter-2.9\bin\RegXoutput.csv</stringProp>
</ResultCollector>
<hashTree/>
</hashTree>
</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>false</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/>
<ResultCollector guiclass="StatVisualizer" testclass="ResultCollector" testname="Aggregate Report" 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>false</message>
<threadName>true</threadName>
<dataType>true</dataType>
<encoding>false</encoding>
<assertions>true</assertions>
<subresults>true</subresults>
<responseData>false</responseData>
<samplerData>false</samplerData>
<xml>false</xml>
<fieldNames>true</fieldNames>
<responseHeaders>false</responseHeaders>
<requestHeaders>false</requestHeaders>
<responseDataOnError>false</responseDataOnError>
<saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>
<assertionsResultsToSave>0</assertionsResultsToSave>
<bytes>true</bytes>
</value>
</objProp>
<stringProp name="filename">C:\Documents and Settings\valliammaim\My Documents\Downloads\apache-jmeter-2.9\apache-jmeter-2.9\bin\report.csv</stringProp>
<boolProp name="useGroupName">true</boolProp>
</ResultCollector>
<hashTree/>
</hashTree>
<ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group-2" 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">1372725732000</longProp>
<longProp name="ThreadGroup.end_time">1372725732000</longProp>
<boolProp name="ThreadGroup.scheduler">false</boolProp>
<stringProp name="ThreadGroup.duration"></stringProp>
<stringProp name="ThreadGroup.delay"></stringProp>
</ThreadGroup>
<hashTree>
<WhileController guiclass="WhileControllerGui" testclass="WhileController" testname="While Controller" enabled="true">
<stringProp name="WhileController.condition">"${userid}" != "<EOF>"</stringProp>
</WhileController>
<hashTree>
<LoopController guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
<boolProp name="LoopController.continue_forever">true</boolProp>
<stringProp name="LoopController.loops">1</stringProp>
</LoopController>
<hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="GET Patient" enabled="true">
<elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
<collectionProp name="Arguments.arguments"/>
</elementProp>
<stringProp name="HTTPSampler.domain">http://sampurl/${patientECN}</stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
<stringProp name="HTTPSampler.protocol"></stringProp>
<stringProp name="HTTPSampler.contentEncoding"></stringProp>
<stringProp name="HTTPSampler.path">http://sampleurl/${patientECN}</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>
</HTTPSamplerProxy>
<hashTree>
<ConstantTimer guiclass="ConstantTimerGui" testclass="ConstantTimer" testname="Constant Timer" enabled="true">
<stringProp name="ConstantTimer.delay">100</stringProp>
</ConstantTimer>
<hashTree/>
<AuthManager guiclass="AuthPanel" testclass="AuthManager" testname="HTTP Authorization Manager" enabled="true">
<collectionProp name="AuthManager.auth_list">
<elementProp name="" elementType="Authorization">
<stringProp name="Authorization.url">http://sampurl/${userid}</stringProp>
<stringProp name="Authorization.username">sample</stringProp>
<stringProp name="Authorization.password">sample</stringProp>
<stringProp name="Authorization.domain"></stringProp>
<stringProp name="Authorization.realm"></stringProp>
</elementProp>
</collectionProp>
</AuthManager>
<hashTree/>
</hashTree>
</hashTree>
<CSVDataSet guiclass="TestBeanGUI" testclass="CSVDataSet" testname="CSV Data Set Config" enabled="true">
<stringProp name="delimiter">,</stringProp>
<stringProp name="fileEncoding"></stringProp>
<stringProp name="filename">RegXoutput.csv</stringProp>
<boolProp name="quotedData">true</boolProp>
<boolProp name="recycle">false</boolProp>
<stringProp name="shareMode">All threads</stringProp>
<boolProp name="stopThread">true</boolProp>
<stringProp name="variableNames">userid</stringProp>
</CSVDataSet>
<hashTree/>
</hashTree>
<ResultCollector guiclass="StatVisualizer" testclass="ResultCollector" testname="Aggregate Report" 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>false</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/>
<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>false</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/>
</hashTree>
</hashTree>
您能否显示用于打开/写入csv文件的代码？ – rsp
在上面的代码更新中，我使用一个简单的数据编写器来捕获我的输出。每次执行线程组时，我都要覆盖它。感谢你们对我的帮助。 – Sashi
简单数据写入器没有可让您截断可惜的文件的属性。或者，你可以在文件名中加上一个时间戳，以确保在测试开始时它是空的（比如'RegXoutput $ {__time（yyyyMMdd-HHmm，）} .csv'），然后清理，或者使用BeanShell脚本截断文件。 – rsp