1 场景设计
1.1 什么是场景？
- 用来真实模拟用户操作的工作单元；
- 场景设计源自于用户真实操作。
1.2 设计原则
- JMeter场景设计通过线程组设置来完成，有些复杂场景需要配合逻辑控制器完成；
- 原则是忠于用户实际操作，组合用户的各种操作到场景中来。
2 场景设置
线程组实际是建立一个线程池，对线程池进行初始化，运行时做各种异常处理。
2.1 参数说明
2.1 基本参数
| 参数 |
说明 |
| 名称 |
任意设置具有业务的意思即可 |
| 注释 |
任意设置，可为空 |
2.2 在取样器错误后要执行的动作
| 参数 |
说明 |
| 继续 |
请求出错后继续运行 |
| 启动下一进程循环 |
若出错，同一脚本中的请求将不再执行，直接重新开始执行 |
| 停止线程 |
若出错，停止当前线程不再执行 |
| 停止测试 |
某一线程请求失败，停止所有线程，但每个线程执行完当前迭代才会停止 |
| 立即停止测试 |
有线程请求失败，立马停止整个测试场景 |
2.3 线程属性
| 参数 |
说明 |
| 线程数 |
运行线程的数量，一个线程对应一个虚拟用户 |
Ramp-Up Period |
线程启动开始运行的时间间隔，即所有线程在多长时间内开始运行。若线程数为20，时间为10秒，则每秒启动2个小城。设置为0秒，则表示20个线程立马启动 |
| 循环次数 |
请求的重复次数。选择“永远”则一直执行除非崩溃。不选择“永远”，填写次数，则运行指定的次数。 |
| 延迟创建线程直到需要 |
勾选后，线程在Ramp-Up Period的间隔时间启动并运行取样器的请求。 |
Same user on each iteration |
【选中】每次循环用第一次的cookie，不再更新；可以理解为每次循环都是同一个用户。【不选中】每次循环都是用新的cookie值；可以理解为每次循环都是不同的用户 |
2.4 调度器
| 参数 |
说明 |
| 持续时间 |
测试计划持续多长时间 |
| 启动延迟 |
点击执行按钮后，仅初始化场景，不运行线程 |
3 实例说明
- 获取
token接口，线程数10，时间为5秒，则每秒启动2个；
- 循环次数设置2；
- 其他默认；
- 运行脚本；
- 运行脚本后发现，有20个请求，因为线程数为10，循环了2次。
4 本文涉及的脚本
<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.3">
<hashTree>
<TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="测试计划" enabled="true">
<stringProp name="TestPlan.comments"></stringProp>
<boolProp name="TestPlan.functional_mode">false</boolProp>
<boolProp name="TestPlan.tearDown_on_shutdown">true</boolProp>
<boolProp name="TestPlan.serialize_threadgroups">false</boolProp>
<elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="用户定义的变量" enabled="true">
<collectionProp name="Arguments.arguments">
<elementProp name="COMMON" elementType="Argument">
<stringProp name="Argument.name">COMMON</stringProp>
<stringProp name="Argument.value">/zentao/api.php/v1</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="TestPlan.user_define_classpath"></stringProp>
</TestPlan>
<hashTree>
<HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="HTTP信息头管理器" enabled="true">
<collectionProp name="HeaderManager.headers">
<elementProp name="" elementType="Header">
<stringProp name="Header.name">Content-Type</stringProp>
<stringProp name="Header.value">application/json</stringProp>
</elementProp>
</collectionProp>
</HeaderManager>
<hashTree/>
<ConfigTestElement guiclass="HttpDefaultsGui" testclass="ConfigTestElement" testname="HTTP请求默认值" enabled="true">
<elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="用户定义的变量" enabled="true">
<collectionProp name="Arguments.arguments"/>
</elementProp>
<stringProp name="HTTPSampler.domain">127.0.0.1</stringProp>
<stringProp name="HTTPSampler.port">80</stringProp>
<stringProp name="HTTPSampler.protocol">http</stringProp>
<stringProp name="HTTPSampler.contentEncoding">UTF-8</stringProp>
<stringProp name="HTTPSampler.path"></stringProp>
<stringProp name="HTTPSampler.concurrentPool">6</stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
</ConfigTestElement>
<hashTree/>
<ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="禅道接口" enabled="true">
<stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
<elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="循环控制器" enabled="true">
<boolProp name="LoopController.continue_forever">false</boolProp>
<stringProp name="LoopController.loops">2</stringProp>
</elementProp>
<stringProp name="ThreadGroup.num_threads">10</stringProp>
<stringProp name="ThreadGroup.ramp_time">5</stringProp>
<boolProp name="ThreadGroup.scheduler">false</boolProp>
<stringProp name="ThreadGroup.duration"></stringProp>
<stringProp name="ThreadGroup.delay"></stringProp>
<boolProp name="ThreadGroup.same_user_on_next_iteration">true</boolProp>
</ThreadGroup>
<hashTree>
<TransactionController guiclass="TransactionControllerGui" testclass="TransactionController" testname="事务控制器" enabled="true">
<boolProp name="TransactionController.includeTimers">false</boolProp>
<boolProp name="TransactionController.parent">true</boolProp>
</TransactionController>
<hashTree>
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="1-获取token" enabled="true">
<boolProp name="HTTPSampler.postBodyRaw">true</boolProp>
<elementProp name="HTTPsampler.Arguments" elementType="Arguments">
<collectionProp name="Arguments.arguments">
<elementProp name="" elementType="HTTPArgument">
<boolProp name="HTTPArgument.always_encode">false</boolProp>
<stringProp name="Argument.value">{"account": "admin", "password": "123456"}</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="HTTPSampler.domain"></stringProp>
<stringProp name="HTTPSampler.port"></stringProp>
<stringProp name="HTTPSampler.protocol"></stringProp>
<stringProp name="HTTPSampler.contentEncoding">UTF-8</stringProp>
<stringProp name="HTTPSampler.path">/${COMMON}/tokens</stringProp>
<stringProp name="HTTPSampler.method">POST</stringProp>
<boolProp name="HTTPSampler.follow_redirects">true</boolProp>
<boolProp name="HTTPSampler.auto_redirects">false</boolProp>
<boolProp name="HTTPSampler.use_keepalive">true</boolProp>
<boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
<stringProp name="HTTPSampler.embedded_url_re"></stringProp>
<stringProp name="HTTPSampler.connect_timeout"></stringProp>
<stringProp name="HTTPSampler.response_timeout"></stringProp>
</HTTPSamplerProxy>
<hashTree>
<JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="JSON提取器-提取返回的token" enabled="false">
<stringProp name="JSONPostProcessor.referenceNames">token</stringProp>
<stringProp name="JSONPostProcessor.jsonPathExprs">$.token</stringProp>
<stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
<stringProp name="JSONPostProcessor.defaultValues">无</stringProp>
</JSONPostProcessor>
<hashTree/>
<RegexExtractor guiclass="RegexExtractorGui" testclass="RegexExtractor" testname="正则表达式提取器" enabled="true">
<stringProp name="RegexExtractor.useHeaders">false</stringProp>
<stringProp name="RegexExtractor.refname">token</stringProp>
<stringProp name="RegexExtractor.regex">"token":"(.*?)"</stringProp>
<stringProp name="RegexExtractor.template">$1$</stringProp>
<stringProp name="RegexExtractor.default"></stringProp>
<stringProp name="RegexExtractor.match_number">1</stringProp>
</RegexExtractor>
<hashTree/>
<ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="响应断言-响应代码" enabled="true">
<collectionProp name="Asserion.test_strings">
<stringProp name="49587">201</stringProp>
</collectionProp>
<stringProp name="Assertion.custom_message"></stringProp>
<stringProp name="Assertion.test_field">Assertion.response_code</stringProp>
<boolProp name="Assertion.assume_success">false</boolProp>
<intProp name="Assertion.test_type">2</intProp>
</ResponseAssertion>
<hashTree/>
</hashTree>
</hashTree>
<ResultCollector guiclass="TableVisualizer" testclass="ResultCollector" testname="用表格察看结果" 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>true</fieldNames>
<responseHeaders>false</responseHeaders>
<requestHeaders>false</requestHeaders>
<responseDataOnError>false</responseDataOnError>
<saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
<assertionsResultsToSave>0</assertionsResultsToSave>
<bytes>true</bytes>
<sentBytes>true</sentBytes>
<url>true</url>
<threadCounts>true</threadCounts>
<idleTime>true</idleTime>
<connectTime>true</connectTime>
</value>
</objProp>
<stringProp name="filename"></stringProp>
</ResultCollector>
<hashTree/>
</hashTree>
<ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="察看结果树" 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>true</fieldNames>
<responseHeaders>false</responseHeaders>
<requestHeaders>false</requestHeaders>
<responseDataOnError>false</responseDataOnError>
<saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
<assertionsResultsToSave>0</assertionsResultsToSave>
<bytes>true</bytes>
<sentBytes>true</sentBytes>
<url>true</url>
<threadCounts>true</threadCounts>
<idleTime>true</idleTime>
<connectTime>true</connectTime>
</value>
</objProp>
<stringProp name="filename"></stringProp>
</ResultCollector>
<hashTree/>
</hashTree>
</hashTree>
</jmeterTestPlan>
