Re: What's a sealing violation please?
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 * - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: What's a sealing violation please?
Thanks for the reply Jon. -Original Message- From: Jon Wingfield 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) I'm guessing its xercesImpl jar? Having removed it the error 'went'. I also got a clue, just import nu.xom.*; rather than individual ones? Unsure which one cleared the error, but its OK now. What the heck do I do if I want xom to validate? regard sDaveP -- DISCLAIMER: NOTICE: The information contained in this email and any attachments is confidential and may be privileged. If you are not the intended recipient you should not use, disclose, distribute or copy any of the content of it or of any attachment; you are requested to notify the sender immediately of your receipt of the email and then to delete it and any attachments from your system. RNIB endeavours to ensure that emails and any attachments generated by its staff are free from viruses or other contaminants. However, it cannot accept any responsibility for any such which are transmitted. We therefore recommend you scan all attachments. Please note that the statements and views expressed in this email and any attachments are those of the author and do not necessarily represent those of RNIB. RNIB Registered Charity Number: 226227 Website: http://www.rnib.org.uk - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: What's a sealing violation?
search through some of the tomcat archives.. basically their really annoying classloader problems.. when it tries to load a jar library and its already loaded. you can add a line to the manifest of the jar file.. but like i said search this archive.. theres heaps of stuff about them. regards, warren -Original Message- From: Stephen Coy [mailto:[EMAIL PROTECTED]] Sent: Thursday, 17 May 2001 4:31 PM To: [EMAIL PROTECTED] Subject: Re: What's a sealing violation? The release notes tell all... And it only took me a week to figure that out too :-) Stephen Coy On Thursday, May 17, 2001, at 02:53 PM, Kevin Newman wrote: Hi All, Hardware:IBM ThinkPad OS:Windows2000 Servlet Engine:Tomcat 4.0 B6-Dev Can anyone tell me what's a sealing violation (see stack trace below)? I'm using the nightly build of Tomcat and it works fine on my Desktop system with Struts in the webapps directory. But, for some reason I can't seem to get Struts to work on my laptop. There does not appear to be any difference in the environmental settings, but anything other than the Tomcat index page or the struts-documentation produces an exception. Has anyone else out there seen this problem?
RE: What's a sealing violation?
Thanks Stephen, Next time I'll RTFM. grin I should know better. peace, kln -Original Message- From: Stephen Coy [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 1:31 AM To: [EMAIL PROTECTED] Subject: Re: What's a sealing violation? The release notes tell all... And it only took me a week to figure that out too :-) Stephen Coy On Thursday, May 17, 2001, at 02:53 PM, Kevin Newman wrote: Hi All, Hardware:IBM ThinkPad OS:Windows2000 Servlet Engine:Tomcat 4.0 B6-Dev Can anyone tell me what's a sealing violation (see stack trace below)? I'm using the nightly build of Tomcat and it works fine on my Desktop system with Struts in the webapps directory. But, for some reason I can't seem to get Struts to work on my laptop. There does not appear to be any difference in the environmental settings, but anything other than the Tomcat index page or the struts-documentation produces an exception. Has anyone else out there seen this problem?
RE: What's a sealing violation?
Thanks Warren, Next time I'll RTFM. grin I should know better. peace, kln -Original Message- From: Warren Crossing [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 2:57 AM To: '[EMAIL PROTECTED]' Subject: RE: What's a sealing violation? search through some of the tomcat archives.. basically their really annoying classloader problems.. when it tries to load a jar library and its already loaded. you can add a line to the manifest of the jar file.. but like i said search this archive.. theres heaps of stuff about them. regards, warren -Original Message- From: Stephen Coy [mailto:[EMAIL PROTECTED]] Sent: Thursday, 17 May 2001 4:31 PM To: [EMAIL PROTECTED] Subject: Re: What's a sealing violation? The release notes tell all... And it only took me a week to figure that out too :-) Stephen Coy On Thursday, May 17, 2001, at 02:53 PM, Kevin Newman wrote: Hi All, Hardware:IBM ThinkPad OS:Windows2000 Servlet Engine:Tomcat 4.0 B6-Dev Can anyone tell me what's a sealing violation (see stack trace below)? I'm using the nightly build of Tomcat and it works fine on my Desktop system with Struts in the webapps directory. But, for some reason I can't seem to get Struts to work on my laptop. There does not appear to be any difference in the environmental settings, but anything other than the Tomcat index page or the struts-documentation produces an exception. Has anyone else out there seen this problem?
