JMeter学习-014-JMeter 配置元件实例之 - 用户定义的变量 参数化配置
前文讲述了通过 CSV Data Set Config 实现参数化配置（详情敬请参阅：JMeter学习-010-JMeter 配置元件实例之 - CSV Data Set Config 参数化配置），在 JMeter 的配置元件中还有一个元件：用户定义的变量，通过 用户定义的变量，也可实现参数化的配置，通常用户定义的变量一般作为全局变量使用。下面就以 用户定义的变量 替换之前博文中的配置文件实现单一循环的参数化配置。
用户定义的变量添加路径：【 添加 / 配置元件 / 用户定义的变量 】，其对应的配置页面如下所示：
配置参数说明：
名称：对用户定义变量的简述
注释：对用户定义变量的详细概述
名称：定义变量的引用名称
值：变量的值
描述：对定义变量的描述信息
参数化脚本修改方法：
第一步：删除原 配置元件/CSV Data Set Config 参数文件
第二步：通过 【 添加 / 配置元件 / 用户定义的变量 】添加用户定义的变量组件
第三步：配置用户定义的变量
将之前 CSV Data Set Config 参数文件中配置的变量配置到添加的组件 用户定义的变量中，配置好的用户定义的变量如下所示：
第四步：执行脚本
脚本执行结果如下图所示：
由上图我们可以看到，实际脚本中配置了两个用户定义的变量组件（分别为不同的商品，且变量中的名称均相同），从执行结果我们可以看出，当变量名称相同时，脚本优先引用最近的可使用的变量。若在日后的脚本编写调试过程中，发现变量的值不是期望的值，除了获取变量获取错误或配置错误之外，还存在一种可能就是就近变量覆盖。
附录（一）：
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guiclass="LoopControlPanel" testclass="LoopController" testname="循环控制器" enabled="true"> 17 <boolProp name="LoopController.continue_forever">false</boolProp> 18 <stringProp name="LoopController.loops">1</stringProp> 19 </elementProp> 20 <stringProp name="ThreadGroup.num_threads">2</stringProp> 21 <stringProp name="ThreadGroup.ramp_time">0</stringProp> 22 <longProp name="ThreadGroup.start_time">1419232321000</longProp> 23 <longProp name="ThreadGroup.end_time">1419232321000</longProp> 24 <boolProp name="ThreadGroup.scheduler">false</boolProp> 25 <stringProp name="ThreadGroup.duration"></stringProp> 26 <stringProp name="ThreadGroup.delay"></stringProp> 27 </ThreadGroup> 28 <hashTree> 29 <Arguments guiclass="ArgumentsPanel" testclass="Arguments" testname="用户定义的变量 - 商品编号 101-006-78945" enabled="true"> 30 <collectionProp name="Arguments.arguments"> 31 <elementProp name="goodsNo" elementType="Argument"> 32 <stringProp name="Argument.name">goodsNo</stringProp> 33 <stringProp 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<label>true</label> 245 <code>true</code> 246 <message>true</message> 247 <threadName>true</threadName> 248 <dataType>true</dataType> 249 <encoding>false</encoding> 250 <assertions>true</assertions> 251 <subresults>true</subresults> 252 <responseData>false</responseData> 253 <samplerData>false</samplerData> 254 <xml>false</xml> 255 <fieldNames>false</fieldNames> 256 <responseHeaders>false</responseHeaders> 257 <requestHeaders>false</requestHeaders> 258 <responseDataOnError>false</responseDataOnError> 259 <saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage> 260 <assertionsResultsToSave>0</assertionsResultsToSave> 261 <bytes>true</bytes> 262 <threadCounts>true</threadCounts> 263 </value> 264 </objProp> 265 <stringProp name="filename"></stringProp> 266 </ResultCollector> 267 <hashTree/> 268 <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="察看结果树" enabled="true"> 269 <boolProp 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<stringProp name="filename">${__property(JmeterAuto_LogFile)}</stringProp> 299 </ResultCollector> 300 <hashTree/> 301 </hashTree> 302 </hashTree> 303 </jmeterTestPlan>
至此， JMeter学习-014-JMeter 配置元件实例之 - 用户定义的变量 参数化配置 顺利完结，希望此文能够给初学 JMeter 的您一份参考。
最后，非常感谢亲的驻足，希望此文能对亲有所帮助。热烈欢迎亲一起探讨，共同进步。非常感谢！ ^_^