mac使用jvm诊断工具arthas启动报错Can not find tools.jar under java home解决

linux操作系统遇到以下问题也可用同样的方式解决

-bash-3.2$ java -jar arthas-boot.jar
[INFO] arthas-boot version: 3.4.5
[INFO] Found existing java process, please choose one and input the serial number of the process, eg : 1. Then hit ENTER.
* [1]: 14224 org.jetbrains.idea.maven.server.RemoteMavenServer[2]: 14307 org.jetbrains.jps.cmdline.Launcher[3]: 14308 com.anchnet.netty.NettyServer[4]: 744 [5]: 1534 com.tsf.demo.provider.ProviderApplication
3
[INFO] arthas home: /Users/lu-tsang/.arthas/lib/3.5.3/arthas
[INFO] Try to attach process 14308
Exception in thread "main" java.lang.IllegalArgumentException: Can not find tools.jar under java home: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home, please try to start arthas-boot with full path java. Such as /opt/jdk/bin/java -jar arthas-boot.jarat com.taobao.arthas.boot.ProcessUtils.findJavaHome(ProcessUtils.java:222)at com.taobao.arthas.boot.ProcessUtils.startArthasCore(ProcessUtils.java:233)at com.taobao.arthas.boot.Bootstrap.main(Bootstrap.java:523)

看上去是找错了java home了,执行一下java_home命令找找当前java home在哪儿

-bash-3.2$ /usr/libexec/java_home -V
Matching Java Virtual Machines (2):1.8.181.13 (x86_64) "Oracle Corporation" - "Java" /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home1.8.0_181 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home
/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home

再看看当前系统环境变量中确实没有配置java home应该是默认拿了第一个导致找不到tools.jar包
解决方案一：
使用第二个我们自己装的jdk运行arthas

-bash-3.2$ /Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/bin/java -jar arthas-boot.jar

解决方案二：
将我们安装的jdk加到path下

-bash-3.2$ vi ~/.bash_profile// 在文件末尾加上
export JAVA_HOMR="/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home
export PATH="$JAVA_HOME/bin:$PATH""// 保存后退出，重新执行该文件命令
source ~/.bash_profile

随后可直接用java命令运行 arthas工具

-bash-3.2$ java -jar arthas-boot.jar
[INFO] arthas-boot version: 3.4.5
[INFO] Process 14308 already using port 3658
[INFO] Process 14308 already using port 8563
[INFO] Found existing java process, please choose one and input the serial number of the process, eg : 1. Then hit ENTER.
* [1]: 14308 com.xxx.netty.NettyServer[2]: 14224 org.jetbrains.idea.maven.server.RemoteMavenServer[3]: 14307 org.jetbrains.jps.cmdline.Launcher[4]: 744 [5]: 1534 com.tsf.demo.provider.ProviderApplication
1
[INFO] arthas home: /Users/lu-tsang/.arthas/lib/3.5.3/arthas
[INFO] The target process already listen port 3658, skip attach.
[INFO] arthas-client connect 127.0.0.1 3658,---.  ,------. ,--------.,--.  ,--.  ,---.   ,---.                           /  O  \ |  .--. ''--.  .--'|  '--'  | /  O  \ '   .-'
|  .-.  ||  '--'.'   |  |   |  .--.  ||  .-.  |`.  `-.
|  | |  ||  |\  \    |  |   |  |  |  ||  | |  |.-'    |
`--' `--'`--' '--'   `--'   `--'  `--'`--' `--'`-----'                          wiki       https://arthas.aliyun.com/doc
tutorials  https://arthas.aliyun.com/doc/arthas-tutorials.html
version    3.5.3
main_class com.xxx.netty.NettyServer
pid        14308
time       2021-08-06 10:44:12                                                  [arthas@14308]$

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mac使用jvm诊断工具arthas启动报错Can not find tools.jar under java home解决

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