Arthas 启动报 ClassNotFoundException com.sun.tools.attach.VirtualMachine
Arthas Java About 1,119 words问题
使用Java11
命令行方式java -jar
启动Arthas
,报错找不到VirtualMachine
,具体信息如下:
PS C:\arthas-bin> java -jar .\arthas-boot.jar 2060
[INFO] arthas-boot version: 3.5.2
[INFO] arthas home: C:\arthas-bin
[INFO] Try to attach process 2060
[ERROR] Start arthas failed, exception stack trace:
java.lang.NoClassDefFoundError: com/sun/tools/attach/VirtualMachine
at com.taobao.arthas.core.Arthas.attachAgent(Arthas.java:89)
at com.taobao.arthas.core.Arthas.<init>(Arthas.java:26)
at com.taobao.arthas.core.Arthas.main(Arthas.java:139)
Caused by: java.lang.ClassNotFoundException: com.sun.tools.attach.VirtualMachine
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 3 more
[ERROR] attach fail, targetPid: 2060
原因
Java9
后采用模块化分包,默认java.base
等一些常规模块可不需要requires
就可使用,而jdk.internal
则需要显示引入。
解决
可添加启动参数--add-opens
,引入该模块。
java --add-opens=jdk.attach/com.sun.tools.attach=ALL-UNNAMED -jar .\arthas-boot.jar 2060
Views: 6,919 · Posted: 2021-07-23
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