Jmeter 执行Java 请求时，运行结束后报错，
Tidying up remote @ Mon Feb 24 19:42:34 CST 2020 (1582544554083) ... end of run The JVM should have exited but did not. The following non-daemon threads are still running (DestroyJavaVM is OK): Thread[Thread-6,5,RMI Runtime], stackTrace:freemarker.core.BuiltIn#<clinit> at line:141 freemarker.core.FMParser#BuiltIn at line:1196 freemarker.core.FMParser#PrimaryExpression at line:594 freemarker.core.FMParser#UnaryExpression at line:706 freemarker.core.FMParser#MultiplicativeExpression at line:821 freemarker.core.FMParser#AdditiveExpression at line:773 freemarker.core.FMParser#RangeExpression at line:953 freemarker.core.FMParser#RelationalExpression at line:901 freemarker.core.FMParser#EqualityExpression at line:864 freemarker.core.FMParser#AndExpression at line:1020 freemarker.core.FMParser#OrExpression at line:1042 freemarker.core.FMParser#Expression at line:551 freemarker.core.FMParser#List at line:1747 freemarker.core.FMParser#FreemarkerDirective at line:3426 freemarker.core.FMParser#MixedContentElements at line:3812 freemarker.core.FMParser#Root at line:4458 freemarker.template.Template#<init> at line:253 freemarker.cache.TemplateCache#loadTemplate at line:549 freemarker.cache.TemplateCache#getTemplateInternal at line:439 freemarker.cache.TemplateCache#getTemplate at line:292 freemarker.template.Configuration#getTemplate at line:2750 freemarker.template.Configuration#getTemplate at line:2599 org.apache.jmeter.report.dashboard.TemplateVisitor#visitFile at line:113 org.apache.jmeter.report.dashboard.TemplateVisitor#visitFile at line:49 java.nio.file.Files#walkFileTree at line:2670 java.nio.file.Files#walkFileTree at line:2742 org.apache.jmeter.report.dashboard.HtmlTemplateExporter#export at line:509 org.apache.jmeter.report.dashboard.ReportGenerator#exportData at line:381 org.apache.jmeter.report.dashboard.ReportGenerator#generate at line:262 org.apache.jmeter.JMeter$ListenToTest#generateReport at line:1324 org.apache.jmeter.JMeter$ListenToTest#run at line:1308 java.lang.Thread#run at line:748
原因：在执行java请求时会在jmeter线程之外，另外启动java线程，导致在脚本执行结束时JVM无法退出。
若要避免这种现象，需要修改jmeter.properties 中的jmeterengine.force.system.exit=true