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jmeter版本：5.4.1
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在dos命令窗口中进入jmeter安装目录下的bin目录中：执行jmeter - v命令
我启动的方式是：进入jmeter安装目录下的bin目录中双击jmeter.bat启动的。结果报错，但是不影响使用。
报错日志如下：
2023-08-11 10:16:01,453 main ERROR FileManager (jmeter.log) java.io.FileNotFoundException: jmeter.log (拒绝访问。) java.io.FileNotFoundException: jmeter.log (拒绝访问。)at java.io.FileOutputStream.open0(Native Method)at java.io.FileOutputStream.open(Unknown Source)at java.io.FileOutputStream.<init>(Unknown Source)at org.apache.logging.log4j.core.appender.FileManager$FileManagerFactory.createManager(FileManager.java:434)at org.apache.logging.log4j.core.appender.FileManager$FileManagerFactory.createManager(FileManager.java:418)at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:113)at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:100)at org.apache.logging.log4j.core.appender.FileManager.getFileManager(FileManager.java:182)at org.apache.logging.log4j.core.appender.FileAppender$Builder.build(FileAppender.java:96)at org.apache.logging.log4j.core.appender.FileAppender$Builder.build(FileAppender.java:52)at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122)at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1002)at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:942)at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:934)at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:552)at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:241)at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:288)at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:618)at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:691)at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:708)at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:263)at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153)at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:138)at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:45)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:48)at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:30)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:363)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388)at org.apache.jmeter.JMeter.<clinit>(JMeter.java:126)at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)at java.lang.reflect.Constructor.newInstance(Unknown Source)at org.apache.jmeter.NewDriver.main(NewDriver.java:252)2023-08-11 10:16:01,460 main ERROR Could not create plugin of type class org.apache.logging.log4j.core.appender.FileAppender for element File: java.lang.IllegalStateException: ManagerFactory [org.apache.logging.log4j.core.appender.FileManager$FileManagerFactory@294425a7] unable to create manager for [jmeter.log] with data [org.apache.logging.log4j.core.appender.FileManager$FactoryData@67d48005] java.lang.IllegalStateException: ManagerFactory [org.apache.logging.log4j.core.appender.FileManager$FileManagerFactory@294425a7] unable to create manager for [jmeter.log] with data [org.apache.logging.log4j.core.appender.FileManager$FactoryData@67d48005]at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:115)at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:100)at org.apache.logging.log4j.core.appender.FileManager.getFileManager(FileManager.java:182)at org.apache.logging.log4j.core.appender.FileAppender$Builder.build(FileAppender.java:96)at org.apache.logging.log4j.core.appender.FileAppender$Builder.build(FileAppender.java:52)at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122)at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1002)at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:942)at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:934)at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:552)at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:241)at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:288)at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:618)at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:691)at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:708)at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:263)at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153)at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:138)at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:45)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:48)at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:30)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:363)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388)at org.apache.jmeter.JMeter.<clinit>(JMeter.java:126)at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)at java.lang.reflect.Constructor.newInstance(Unknown Source)at org.apache.jmeter.NewDriver.main(NewDriver.java:252)2023-08-11 10:16:01,461 main ERROR Unable to invoke factory method in class org.apache.logging.log4j.core.appender.FileAppender for element File: java.lang.IllegalStateException: No factory method found for class org.apache.logging.log4j.core.appender.FileAppender java.lang.IllegalStateException: No factory method found for class org.apache.logging.log4j.core.appender.FileAppenderat org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.findFactoryMethod(PluginBuilder.java:234)at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:134)at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1002)at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:942)at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:934)at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:552)at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:241)at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:288)at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:618)at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:691)at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:708)at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:263)at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153)at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:138)at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:45)at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:48)at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:30)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:363)at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388)at org.apache.jmeter.JMeter.<clinit>(JMeter.java:126)at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)at java.lang.reflect.Constructor.newInstance(Unknown Source)at org.apache.jmeter.NewDriver.main(NewDriver.java:252)2023-08-11 10:16:01,465 main ERROR Null object returned for File in Appenders.
2023-08-11 10:16:01,469 main ERROR Unable to locate appender "jmeter-log" for logger config "root"
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Don't use GUI mode for load testing !, only for Test creation and Test debugging.
For load testing, use CLI Mode (was NON GUI):jmeter -n -t [jmx file] -l [results file] -e -o [Path to web report folder]
& increase Java Heap to meet your test requirements:Modify current env variable HEAP="-Xms1g -Xmx1g -XX:MaxMetaspaceSize=256m" in the jmeter batch file
Check : https://jmeter.apache.org/usermanual/best-practices.html
================================================================================如果你们出现的情况和我一样，可以试试我下面的办法
解决办法为：以管理员身份运行 jmeter.bat
此时没有jmeter.log拒绝访问的异常了。