摘要：了解.jmx文件格式类型，对jmeter二次开发与拓展有很大的帮助，当然也可以利用python对其进行一些处理（生成一些测试用例，对jmx文件进行 ”增删改查“）。
一个完整用例的.jmx文件基本结构是这样，类似于xml结构（树状结构）（文章标红处 均是 可以修改的 地方（也可以说就是一个可控变量））；
python 处理xml文件的模块，bs4 , xml.dom；
下面按结构自上而下讲解各个部分再.jmx文件中的表示：
测试计划 root
<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.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>
<stringProp name="TestPlan.user_define_classpath"></stringProp>
</TestPlan>
变量包含： testname, enabled(true启用，false禁用)
线程组 first Child
<ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="组织架构管理_业务场景测试" 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">1</stringProp> -- 循环一次
</elementProp>
<stringProp name="ThreadGroup.num_threads">1</stringProp> -- 线程数1
<stringProp name="ThreadGroup.ramp_time">1</stringProp> -- Ramp-up Time =1，启动时间
<longProp name="ThreadGroup.start_time">1472796674000</longProp>
<longProp name="ThreadGroup.end_time">1472796674000</longProp>
<boolProp name="ThreadGroup.scheduler">false</boolProp>
<stringProp name="ThreadGroup.duration"></stringProp>
<stringProp name="ThreadGroup.delay"></stringProp>
</ThreadGroup>
JDBCDataSource
<JDBCDataSource guiclass="TestBeanGUI" testclass="JDBCDataSource" testname="数据库连接信息配置" enabled="true">
<boolProp name="autocommit">true</boolProp>
<stringProp name="checkQuery">Select 1</stringProp>
<stringProp name="connectionAge">5000</stringProp> -- 最大连接age
<stringProp name="dataSource">mysql</stringProp> -- 资源池变量
<stringProp name="dbUrl">jdbc:mysql://localhost/db</stringProp> --jdbc连接
<stringProp name="driver">com.mysql.jdbc.Driver</stringProp> -- jdbc驱动（可以设置为常量）
<boolProp name="keepAlive">true</boolProp>
<stringProp name="password">root</stringProp> -- db密码
<stringProp name="poolMax">10</stringProp> -- 最大连接数
<stringProp name="timeout">10000</stringProp>
<stringProp name="transactionIsolation">DEFAULT</stringProp>
<stringProp name="trimInterval">60000</stringProp>
<stringProp name="username">name</stringProp> -- 用户名
</JDBCDataSource>
HTTP请求默认值
<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">host</stringProp> -- host 服务器IP
<stringProp name="HTTPSampler.port">port</stringProp> -- port端口
<stringProp name="HTTPSampler.connect_timeout">100000</stringProp> -- 连接超时时间
<stringProp name="HTTPSampler.response_timeout">100000</stringProp> -- 请求超时时间
<stringProp name="HTTPSampler.protocol">http</stringProp> -- 协议类型（变量可填）
<stringProp name="HTTPSampler.contentEncoding">utf-8</stringProp>
<stringProp name="HTTPSampler.path"></stringProp>
<stringProp name="HTTPSampler.implementation">HttpClient4</stringProp> -- 可选择（java\HttpCliet4）
<stringProp name="HTTPSampler.concurrentPool">4</stringProp>
</ConfigTestElement>
HTTP信息头管理器(http请求头设置，key-value对应)
<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>
用户定义的变量
<Arguments guiclass="ArgumentsPanel" testclass="Arguments" testname="用户定义的变量" enabled="true">
<collectionProp name="Arguments.arguments">
<elementProp name="accessToken" elementType="Argument">
<stringProp name="Argument.name">accessToken</stringProp>
<stringProp name="Argument.value">${accessToken}</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
<stringProp name="Argument.desc">description</stringProp>
</elementProp>
</collectionProp>
</Arguments>
仅一次控制器（循环控制器）
<OnceOnlyController guiclass="OnceOnlyControllerGui" testclass="OnceOnlyController" testname="组织管理" enabled="true"/>
查看结果树（该部分为固定项）
<ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="察看结果树" enabled="true">
<boolProp name="ResultCollector.error_logging">false</boolProp>
<objProp>
<name>saveConfig</name>
<value class="SampleSaveConfiguration">
<time>true</time>
<latency>true</latency>
<timestamp>true</timestamp>
<success>true</success>
<label>true</label>
<code>true</code>
<message>true</message>
<threadName>true</threadName>
<dataType>true</dataType>
<encoding>false</encoding>
<assertions>true</assertions>
<subresults>true</subresults>
<responseData>false</responseData>
<samplerData>false</samplerData>
<xml>false</xml>
<fieldNames>false</fieldNames>
<responseHeaders>false</responseHeaders>
<requestHeaders>false</requestHeaders>
<responseDataOnError>false</responseDataOnError>
<saveAssertionResultsFailureMessage>false</saveAssertionResultsFailureMessage>
<assertionsResultsToSave>0</assertionsResultsToSave>
<bytes>true</bytes>
<url>true</url>
<hostname>true</hostname>
<threadCounts>true</threadCounts>
<sampleCount>true</sampleCount>
</value>
</objProp>
<stringProp name="filename"></stringProp>
</ResultCollector>
HTTP请求（Sampler，此处为Json写法，因为请求类型为Application/Json）
<HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="operatorLogin_操作员登录" enabled="true">
<boolProp name="HTTPSampler.postBodyRaw">true</boolProp>
<elementProp name="HTTPsampler.Arguments" elementType="Arguments">
<collectionProp name="Arguments.arguments">
<elementProp name="" elementType="HTTPArgument">
<boolProp name="HTTPArgument.always_encode">false</boolProp>
<stringProp name="Argument.value">{"operatorNo":"${operatorNo}", "password":"${password}", "verifyCode":"${verifyCode}"}</stringProp>
<stringProp name="Argument.metadata">=</stringProp>
</elementProp>
</collectionProp>
</elementProp>
<stringProp name="HTTPSampler.domain"></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">/operatorLogin</stringProp> -- 请求路径
<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>
<boolProp name="HTTPSampler.monitor">false</boolProp>
<stringProp name="HTTPSampler.embedded_url_re"></stringProp>
</HTTPSamplerProxy>
响应断言
<ResponseAssertion guiclass="AssertionGui" testclass="ResponseAssertion" testname="响应断言" enabled="true">
<collectionProp name="Asserion.test_strings">
<stringProp name="-1610171759">"errorCode":"0","errorMsg":"操作成功！"</stringProp>
</collectionProp>
<stringProp name="Assertion.test_field">Assertion.response_data</stringProp>
<boolProp name="Assertion.assume_success">false</boolProp>
<intProp name="Assertion.test_type">2</intProp>
<stringProp name="Assertion.scope">all</stringProp>
<stringProp name="Scope.variable">count_1</stringProp>
</ResponseAssertion>
Debuger Sampler(固定样式)
<DebugSampler guiclass="TestBeanGUI" testclass="DebugSampler" testname="Debug Sampler" enabled="true">
<boolProp name="displayJMeterProperties">false</boolProp>
<boolProp name="displayJMeterVariables">true</boolProp>
<boolProp name="displaySystemProperties">false</boolProp>
</DebugSampler>
