前兩篇文章分表講述了 后置處理器 - 正則表達式提取器概述及簡單實例、多參數獲取，相應博文敬請參閱 簡單實例、多參數獲取。
此文主要講述如何引用正則表達式提取器獲取的數據信息。其實，正則表達式提取器獲取的數據，均可看做一個變量（單個數據，此處指所需獲取的測試相關數據）或數組（多個數據），通過引用變量或者數組的數據，達到應用其數據的目的。下面針對此兩種方式進行介紹。
第一種：單數據變量
但數據變量的應用比較簡單，同我們日常 shell 腳本引用變量相同，引用樣式：${引用名稱}。例如要引用下圖中的變量，引用方式為：${price}。
第二種：多數據變量（數組）
多數據變量（數組）的提取器配置如下圖所示：
通過調試工具 DPP，我們可以獲取上述 goodInfo 的相關信息如下所示：
goodInfo=2142670,101-006-72936,628800 goodInfo_g=5 goodInfo_g0=sysNo":"2142670","skuid":"487623639432","productID":"101-006-72936","productTitle":"蘋果（Apple）iPhone 6 Plus (A1593) 64GB 銀色 移動4G手機","price":"628800"," goodInfo_g1=2142670 goodInfo_g2=","skuid":"487623639432"," goodInfo_g3=101-006-72936 goodInfo_g4=productTitle":"蘋果（Apple）iPhone 6 Plus (A1593) 64GB 銀色 移動4G手機 goodInfo_g5=628800
通過上述信息，結合正則表達式提取器的配置信息，我們可以很容易的看出，配置中模板 $1$ 中的數字，對應上述信息中的不同數據。例如：若模板為 $0$，則最終的數據為上述第三行等號后的數據；若模板為 $3$，則最終數據為 101-006-72936。上述提取器的模板為： $1$,$3$,$5$，最終的數據為 2142670,101-006-72936,628800。那么若是想要獲取 101-006-72936，改怎么引用呢？相信聰明的你已經在上述信息中發現了，對了，實際應用的表達式為 ： ${goodInfo_g3}。
下面就以獲取商品編號，並通過商品編號搜索商品，同時通過 商品系統編號、商品價格 驗證搜索結果是否正確（商品搜索的 HTTP請求 獲取請小主自行獲取，謝謝！），依據下圖所示，將搜索請求中的關鍵字參數化為上步 HTTP請求中的 商品編號。
最終腳本執行結果如下所示（斷言請小主自行仿照配置）：
附錄（一）：
1 <?xml version="1.0" encoding="UTF-8"?> 2 <jmeterTestPlan version="1.2" properties="2.7" jmeter="2.12 r1636949"> 3 <hashTree> 4 <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="接口自動化測試用例 - 非登錄態" enabled="true"> 5 <stringProp name="TestPlan.comments"></stringProp> 6 <boolProp name="TestPlan.functional_mode">false</boolProp> 7 <boolProp name="TestPlan.serialize_threadgroups">false</boolProp> 8 <elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="用戶定義的變量" enabled="true"> 9 <collectionProp name="Arguments.arguments"/> 10 </elementProp> 11 <stringProp name="TestPlan.user_define_classpath"></stringProp> 12 </TestPlan> 13 <hashTree> 14 <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="001-類目搜索驗證" enabled="true"> 15 <stringProp name="ThreadGroup.on_sample_error">continue</stringProp> 16 <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="循環控制器" 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">1</stringProp> 21 <stringProp name="ThreadGroup.ramp_time">1</stringProp> 22 <longProp name="ThreadGroup.start_time">1419564228000</longProp> 23 <longProp name="ThreadGroup.end_time">1419564228000</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 <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="手機數碼-手機通訊-蘋果" enabled="true"> 30 <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" enabled="true"> 31 <collectionProp name="Arguments.arguments"> 32 <elementProp name="districtId" elementType="HTTPArgument"> 33 <boolProp name="HTTPArgument.always_encode">false</boolProp> 34 <stringProp name="Argument.name">districtId</stringProp> 35 <stringProp name="Argument.value">29357</stringProp> 36 <stringProp name="Argument.metadata">=</stringProp> 37 <boolProp name="HTTPArgument.use_equals">true</boolProp> 38 </elementProp> 39 <elementProp name="exAppTag" elementType="HTTPArgument"> 40 <boolProp name="HTTPArgument.always_encode">false</boolProp> 41 <stringProp name="Argument.name">exAppTag</stringProp> 42 <stringProp name="Argument.value">2045191607</stringProp> 43 <stringProp name="Argument.metadata">=</stringProp> 44 <boolProp name="HTTPArgument.use_equals">true</boolProp> 45 </elementProp> 46 </collectionProp> 47 </elementProp> 48 <stringProp name="HTTPSampler.domain">mb.51buy.com</stringProp> 49 <stringProp name="HTTPSampler.port"></stringProp> 50 <stringProp name="HTTPSampler.connect_timeout"></stringProp> 51 <stringProp name="HTTPSampler.response_timeout"></stringProp> 52 <stringProp name="HTTPSampler.protocol">http</stringProp> 53 <stringProp name="HTTPSampler.contentEncoding">GB2312</stringProp> 54 <stringProp name="HTTPSampler.path">/json.php?mod=Search&act=page&p=1&path=706188t706189&districtId=29357&areacode=1&dtype=list%7Cpage%7Cclasses&appSource=android&appVersion=45</stringProp> 55 <stringProp name="HTTPSampler.method">POST</stringProp> 56 <boolProp name="HTTPSampler.follow_redirects">true</boolProp> 57 <boolProp name="HTTPSampler.auto_redirects">false</boolProp> 58 <boolProp name="HTTPSampler.use_keepalive">true</boolProp> 59 <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp> 60 <boolProp name="HTTPSampler.monitor">false</boolProp> 61 <stringProp name="HTTPSampler.embedded_url_re"></stringProp> 62 </HTTPSamplerProxy> 63 <hashTree> 64 <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="HTTP信息頭管理器" enabled="true"> 65 <collectionProp name="HeaderManager.headers"> 66 <elementProp name="Charset" elementType="Header"> 67 <stringProp name="Header.name">Charset</stringProp> 68 <stringProp name="Header.value">UTF-8</stringProp> 69 </elementProp> 70 <elementProp name="Content-Type" elementType="Header"> 71 <stringProp name="Header.name">Content-Type</stringProp> 72 <stringProp name="Header.value">application/x-www-form-urlencoded</stringProp> 73 </elementProp> 74 <elementProp name="Accept-Encoding" elementType="Header"> 75 <stringProp name="Header.name">Accept-Encoding</stringProp> 76 <stringProp name="Header.value">gzip</stringProp> 77 </elementProp> 78 <elementProp name="User-Agent" elementType="Header"> 79 <stringProp name="Header.name">User-Agent</stringProp> 80 <stringProp name="Header.value">Dalvik/1.6.0 (Linux; U; Android 4.4.2; GT-I9502 Build/KOT49H)</stringProp> 81 </elementProp> 82 </collectionProp> 83 </HeaderManager> 84 <hashTree/> 85 <ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="01 - 判斷類目搜索結果狀態碼" enabled="true"> 86 <collectionProp name="Asserion.test_strings"> 87 <stringProp name="71131476">"errno":0</stringProp> 88 </collectionProp> 89 <stringProp name="Assertion.test_field">Assertion.response_data</stringProp> 90 <boolProp name="Assertion.assume_success">false</boolProp> 91 <intProp name="Assertion.test_type">2</intProp> 92 </ResponseAssertion> 93 <hashTree/> 94 <RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正則表達式提取器 - 獲取商品列表中商品的系統編號" enabled="true"> 95 <stringProp name="RegexExtractor.useHeaders">false</stringProp> 96 <stringProp name="RegexExtractor.refname">sysNo</stringProp> 97 <stringProp name="RegexExtractor.regex">"sysNo":"(.+?)","</stringProp> 98 <stringProp name="RegexExtractor.template">$1$</stringProp> 99 <stringProp name="RegexExtractor.default">ERROR</stringProp> 100 <stringProp name="RegexExtractor.match_number">2</stringProp> 101 </RegexExtractor> 102 <hashTree/> 103 <RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正則表達式提取器 - 獲取商品列表中商品的銷售價格" enabled="true"> 104 <stringProp name="RegexExtractor.useHeaders">false</stringProp> 105 <stringProp name="RegexExtractor.refname">price</stringProp> 106 <stringProp name="RegexExtractor.regex">"price":"(.+?)","activePrice</stringProp> 107 <stringProp name="RegexExtractor.template">$1$</stringProp> 108 <stringProp name="RegexExtractor.default">ERROR</stringProp> 109 <stringProp name="RegexExtractor.match_number">3</stringProp> 110 </RegexExtractor> 111 <hashTree/> 112 <RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正則表達式提取器 - 多匹配項處理之一 - 獲取單個匹配項" enabled="true"> 113 <stringProp name="RegexExtractor.useHeaders">false</stringProp> 114 <stringProp name="RegexExtractor.refname">single_sysNo</stringProp> 115 <stringProp name="RegexExtractor.regex">sysNo":"([0-9]{2,8}).+?price":"(.+?)","</stringProp> 116 <stringProp name="RegexExtractor.template">$1$</stringProp> 117 <stringProp name="RegexExtractor.default">ERROR</stringProp> 118 <stringProp name="RegexExtractor.match_number">2</stringProp> 119 </RegexExtractor> 120 <hashTree/> 121 <RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正則表達式提取器 - 多匹配項處理之二 - 獲取單個匹配項" enabled="true"> 122 <stringProp name="RegexExtractor.useHeaders">false</stringProp> 123 <stringProp name="RegexExtractor.refname">single_price</stringProp> 124 <stringProp name="RegexExtractor.regex">sysNo":"([0-9]{2,8}).+?price":"(.+?)","</stringProp> 125 <stringProp name="RegexExtractor.template">$2$</stringProp> 126 <stringProp name="RegexExtractor.default">ERROR</stringProp> 127 <stringProp name="RegexExtractor.match_number">2</stringProp> 128 </RegexExtractor> 129 <hashTree/> 130 <RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正則表達式提取器 - 多匹配項處理之三 - 獲取多個匹配項" enabled="true"> 131 <stringProp name="RegexExtractor.useHeaders">false</stringProp> 132 <stringProp name="RegexExtractor.refname">goodInfo</stringProp> 133 <stringProp name="RegexExtractor.regex">sysNo":"([0-9]{2,8})(.+?)productID":"(.+?)","(.+?)","price":"(.+?)","</stringProp> 134 <stringProp name="RegexExtractor.template">$1$,$3$,$5$</stringProp> 135 <stringProp name="RegexExtractor.default">ERROR,ERROR,ERROR</stringProp> 136 <stringProp name="RegexExtractor.match_number">3,3,3</stringProp> 137 </RegexExtractor> 138 <hashTree/> 139 <DebugPostProcessor guiclass="TestBeanGUI" testclass="DebugPostProcessor" testname="DPP -- 所屬 ：HTTP請求" enabled="true"> 140 <boolProp name="displayJMeterProperties">false</boolProp> 141 <boolProp name="displayJMeterVariables">true</boolProp> 142 <boolProp name="displaySamplerProperties">true</boolProp> 143 <boolProp name="displaySystemProperties">false</boolProp> 144 </DebugPostProcessor> 145 <hashTree/> 146 </hashTree> 147 <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="搜索商品 - 【${goodInfo}】" enabled="true"> 148 <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" enabled="true"> 149 <collectionProp name="Arguments.arguments"> 150 <elementProp name="q" elementType="HTTPArgument"> 151 <boolProp name="HTTPArgument.always_encode">false</boolProp> 152 <stringProp name="Argument.value">${goodInfo_g3}</stringProp> 153 <stringProp name="Argument.metadata">=</stringProp> 154 <boolProp name="HTTPArgument.use_equals">true</boolProp> 155 <stringProp name="Argument.name">q</stringProp> 156 </elementProp> 157 <elementProp name="districtId" elementType="HTTPArgument"> 158 <boolProp name="HTTPArgument.always_encode">false</boolProp> 159 <stringProp name="Argument.value">29357</stringProp> 160 <stringProp name="Argument.metadata">=</stringProp> 161 <boolProp name="HTTPArgument.use_equals">true</boolProp> 162 <stringProp name="Argument.name">districtId</stringProp> 163 </elementProp> 164 <elementProp name="areacode" elementType="HTTPArgument"> 165 <boolProp name="HTTPArgument.always_encode">false</boolProp> 166 <stringProp name="Argument.value">1</stringProp> 167 <stringProp name="Argument.metadata">=</stringProp> 168 <boolProp name="HTTPArgument.use_equals">true</boolProp> 169 <stringProp name="Argument.name">areacode</stringProp> 170 </elementProp> 171 <elementProp name="dtype" elementType="HTTPArgument"> 172 <boolProp name="HTTPArgument.always_encode">false</boolProp> 173 <stringProp name="Argument.value">list|page|classes</stringProp> 174 <stringProp name="Argument.metadata">=</stringProp> 175 <boolProp name="HTTPArgument.use_equals">true</boolProp> 176 <stringProp name="Argument.name">dtype</stringProp> 177 </elementProp> 178 <elementProp name="districtId" elementType="HTTPArgument"> 179 <boolProp name="HTTPArgument.always_encode">false</boolProp> 180 <stringProp name="Argument.name">districtId</stringProp> 181 <stringProp name="Argument.value">29357</stringProp> 182 <stringProp name="Argument.metadata">=</stringProp> 183 <boolProp name="HTTPArgument.use_equals">true</boolProp> 184 </elementProp> 185 <elementProp name="exAppTag" elementType="HTTPArgument"> 186 <boolProp name="HTTPArgument.always_encode">false</boolProp> 187 <stringProp name="Argument.name">exAppTag</stringProp> 188 <stringProp name="Argument.value">2045191607</stringProp> 189 <stringProp name="Argument.metadata">=</stringProp> 190 <boolProp name="HTTPArgument.use_equals">true</boolProp> 191 </elementProp> 192 <elementProp name="appSource" elementType="HTTPArgument"> 193 <boolProp name="HTTPArgument.always_encode">false</boolProp> 194 <stringProp name="Argument.value">android</stringProp> 195 <stringProp name="Argument.metadata">=</stringProp> 196 <boolProp name="HTTPArgument.use_equals">true</boolProp> 197 <stringProp name="Argument.name">appSource</stringProp> 198 </elementProp> 199 <elementProp name="appVersion" elementType="HTTPArgument"> 200 <boolProp name="HTTPArgument.always_encode">false</boolProp> 201 <stringProp name="Argument.value">45</stringProp> 202 <stringProp name="Argument.metadata">=</stringProp> 203 <boolProp name="HTTPArgument.use_equals">true</boolProp> 204 <stringProp name="Argument.name">appVersion</stringProp> 205 </elementProp> 206 </collectionProp> 207 </elementProp> 208 <stringProp name="HTTPSampler.domain">mb.51buy.com</stringProp> 209 <stringProp name="HTTPSampler.port"></stringProp> 210 <stringProp name="HTTPSampler.connect_timeout"></stringProp> 211 <stringProp name="HTTPSampler.response_timeout"></stringProp> 212 <stringProp name="HTTPSampler.protocol">http</stringProp> 213 <stringProp name="HTTPSampler.contentEncoding">GB2312</stringProp> 214 <stringProp name="HTTPSampler.path">/json.php?mod=Search&act=page&p=1&pp=20</stringProp> 215 <stringProp name="HTTPSampler.method">POST</stringProp> 216 <boolProp name="HTTPSampler.follow_redirects">true</boolProp> 217 <boolProp name="HTTPSampler.auto_redirects">false</boolProp> 218 <boolProp name="HTTPSampler.use_keepalive">true</boolProp> 219 <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp> 220 <boolProp name="HTTPSampler.monitor">false</boolProp> 221 <stringProp name="HTTPSampler.embedded_url_re"></stringProp> 222 </HTTPSamplerProxy> 223 <hashTree> 224 <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="HTTP信息頭管理器" enabled="true"> 225 <collectionProp name="HeaderManager.headers"> 226 <elementProp name="Charset" elementType="Header"> 227 <stringProp name="Header.name">Charset</stringProp> 228 <stringProp name="Header.value">UTF-8</stringProp> 229 </elementProp> 230 <elementProp name="Content-Type" elementType="Header"> 231 <stringProp name="Header.name">Content-Type</stringProp> 232 <stringProp name="Header.value">application/x-www-form-urlencoded</stringProp> 233 </elementProp> 234 <elementProp name="Accept-Encoding" elementType="Header"> 235 <stringProp name="Header.name">Accept-Encoding</stringProp> 236 <stringProp name="Header.value">gzip</stringProp> 237 </elementProp> 238 <elementProp name="User-Agent" elementType="Header"> 239 <stringProp name="Header.name">User-Agent</stringProp> 240 <stringProp name="Header.value">Dalvik/1.6.0 (Linux; U; Android 4.4.2; GT-I9502 Build/KOT49H)</stringProp> 241 </elementProp> 242 </collectionProp> 243 </HeaderManager> 244 <hashTree/> 245 <ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="響應斷言" enabled="true"> 246 <collectionProp name="Asserion.test_strings"> 247 <stringProp name="-388667338">${goodInfo_g1}</stringProp> 248 <stringProp name="-388667214">${goodInfo_g5}</stringProp> 249 </collectionProp> 250 <stringProp name="Assertion.test_field">Assertion.response_data</stringProp> 251 <boolProp name="Assertion.assume_success">false</boolProp> 252 <intProp name="Assertion.test_type">16</intProp> 253 </ResponseAssertion> 254 <hashTree/> 255 <DebugPostProcessor guiclass="TestBeanGUI" testclass="DebugPostProcessor" testname="DPP -- 所屬 ：HTTP請求" enabled="true"> 256 <boolProp name="displayJMeterProperties">false</boolProp> 257 <boolProp name="displayJMeterVariables">true</boolProp> 258 <boolProp name="displaySamplerProperties">true</boolProp> 259 <boolProp name="displaySystemProperties">false</boolProp> 260 </DebugPostProcessor> 261 <hashTree/> 262 </hashTree> 263 </hashTree> 264 <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="察看結果樹" enabled="true"> 265 <boolProp name="ResultCollector.error_logging">false</boolProp> 266 <objProp> 267 <name>saveConfig</name> 268 <value class="SampleSaveConfiguration"> 269 <time>true</time> 270 <latency>true</latency> 271 <timestamp>true</timestamp> 272 <success>true</success> 273 <label>true</label> 274 <code>true</code> 275 <message>true</message> 276 <threadName>true</threadName> 277 <dataType>true</dataType> 278 <encoding>false</encoding> 279 <assertions>true</assertions> 280 <subresults>true</subresults> 281 <responseData>false</responseData> 282 <samplerData>false</samplerData> 283 <xml>false</xml> 284 <fieldNames>false</fieldNames> 285 <responseHeaders>false</responseHeaders> 286 <requestHeaders>false</requestHeaders> 287 <responseDataOnError>false</responseDataOnError> 288 <saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage> 289 <assertionsResultsToSave>0</assertionsResultsToSave> 290 <bytes>true</bytes> 291 <threadCounts>true</threadCounts> 292 </value> 293 </objProp> 294 <stringProp name="filename"></stringProp> 295 </ResultCollector> 296 <hashTree/> 297 </hashTree> 298 </hashTree> 299 </jmeterTestPlan>
至此， JMeter學習-011-JMeter 后置處理器實例之 - 正則表達式提取器（三）多參數獲取進階引用篇 順利完結，希望此文能夠給初學 JMeter 的您一份參考。
最后，非常感謝親的駐足，希望此文能對親有所幫助。熱烈歡迎親一起探討，共同進步。非常感謝！ ^_^