com.sun.tools.attach.AgentLoadException: Unable to add JAR file to system class path

[xumingming]

error log:

INFO : load agent /Users/xumingmingv/bin/housemd.jar
INFO : options:
INFO :  /Users/xumingmingv/bin/housemd.jar
INFO :  com.github.zhongl.housemd.Telephone
INFO :  54321
INFO :  com.github.zhongl.housemd.Trace
INFO :  com.github.zhongl.housemd.Loaded
ERROR: com.sun.tools.attach.AgentLoadException: Unable to add JAR file to system class path
ERROR: You can get more details in /tmp/housemd.err.89357

content of /tmp/housemd.err.89537:

sun.tools.attach.HotSpotVirtualMachine.loadAgent(HotSpotVirtualMachine.java:101)
com.github.zhongl.housemd.HouseMD$.run(HouseMD.scala:72)
com.github.zhongl.yascli.Application$class.main(Application.scala:29)
com.github.zhongl.housemd.HouseMD$.main(HouseMD.scala:29)
com.github.zhongl.housemd.HouseMD.main(HouseMD.scala)

[zhongl]

你是不是用JDK 7了?

你再用HouseMD最新的版本, 也就是0.2.3试试, 看问题是不是一样的?

[xumingming]

还是不行:

xumingmingv:bin$ housemd 90067
INFO : Welcome to HouseMD 0.2.3
ERROR: com.sun.tools.attach.AgentLoadException: Unable to add JAR file to system class path
ERROR: You can get more details in /tmp/housemd.err.90067

sun.tools.attach.HotSpotVirtualMachine.loadAgent(HotSpotVirtualMachine.java:101)
com.github.zhongl.housemd.house.House$.run(House.scala:87)
com.github.zhongl.yascli.Application$class.main(Application.scala:29)
com.github.zhongl.housemd.house.House$.main(House.scala:34)
com.github.zhongl.housemd.house.House.main(House.scala)

JDK版本:

xumingmingv:bin$ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-12A269)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode)

[xumingming]

不是所有java进程都不行，是否个特定的线程不行, 对了这个特定的进程我指定了java.system.class.loader, 不知道有没有关系。

[xumingming]

能确定了，是我设定的系统类加载器不支持动态添加JAR包:

System class loader does not support adding JAR file to system class path during the live phase!
Unable to add /Users/xumingmingv/bin/housemd.jar to system class path - not supported by system class loader or configuration error!

[zhongl]

怎么设定系统类加载不支持动态添加JAR包?

[xumingming]

我的系统类加载器是我自己写的一个类加载器(继承URLClassLoader), 其实我想知道的是怎么让自己写的类加载器支持动态添加JAR包 =_=

[zhongl]

代码发来看看, 我很好奇你怎么写的!

[xumingming]

看这里: https://gist.github.com/3365260

[zhongl]

呃, 我看不出来什么问题导致HouseMD 加载agent失败啊?