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Posted to users@tomcat.apache.org by "Pawson, David" <Da...@rnib.org.uk> on 2004/11/02 10:30:14 UTC
What's a sealing violation please?
>From the log
2004-11-02 09:24:51 StandardContext[/servlets-examples]SessionListener: contextInitialized()
2004-11-02 09:25:52 StandardWrapperValve[putpr]: Servlet.service() for servlet putpr threw exception
java.lang.SecurityException: sealing violation: can't seal package nu.xom: already loaded
at java.net.URLClassLoader.defineClass(URLClassLoader.java:234)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
Any help appreciated.
Regards DaveP.
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Re: What's a sealing violation please?
Posted by Jon Wingfield <jo...@mkodo.com>.
It's part of the core java security model. If a package is sealed within
a jar then packages of the same name cannot be defined in another jar,
or elsewhere on the classpath.
Within the manifest file of the jar file which is being loaded by your
putpr servlet you'll probably have a couple of lines like:
Name: nu/xom
Sealed: true
The XOM jar that I have (xom-1.0d8.jar) doesn't seal its packages. So,
you need to find the jar which is sealing the nu.xom package and stop it
doing so. (Or work out your xom dependencies)
Regards,
Jon
Pawson, David wrote:
>>>From the log
>
> 2004-11-02 09:24:51 StandardContext[/servlets-examples]SessionListener: contextInitialized()
> 2004-11-02 09:25:52 StandardWrapperValve[putpr]: Servlet.service() for servlet putpr threw exception
> java.lang.SecurityException: sealing violation: can't seal package nu.xom: already loaded
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:234)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
>
>
>
> Any help appreciated.
>
>
> Regards DaveP.
>
> **** snip here *****
>
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