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In our application we were using crimson xml apis, with jre 1.5 and tomcat 4.1.27.
Now, i am trying to migrate it to Tomcat 5.0+, and 5.0.27 to be precise. And, For my application to work, i need to have the crimson.jar in the classpath.
With jre1.5 the tomcat is not starting and throws this exception : java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:284) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:422) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.adventnet.nms.util.RunJSPModule.startJSPModule(RunJSPModule.java:83) at com.adventnet.nms.util.RunJSPModule.main(RunJSPModule.java:115) Caused by: javax.xml.parsers.FactoryConfigurationError: Provider org.apache.crimson.jaxp.DocumentBuilderFactoryImpl not found at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source) at org.apache.commons.modeler.util.DomUtil.readXml(DomUtil.java:284) at org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource.execute(Mbe ansDescriptorsDOMSource.java:130) at org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource.loadDescrip tors(MbeansDescriptorsDOMSource.java :120) at org.apache.commons.modeler.Registry.load(Registry.java:819) at org.apache.commons.modeler.Registry.loadDescriptors(Registry.java:931) at org.apache.commons.modeler.Registry.loadDescriptors(Registry.java:909) at org.apache.commons.modeler.Registry.findDescriptor(Registry.java:992) at org.apache.commons.modeler.Registry.findManagedBean(Registry.java:696) at org.apache.commons.modeler.Registry.findManagedBean(Registry.java:1047) at org.apache.commons.modeler.Registry.registerComponent(Registry.java:859) at org.apache.catalina.loader.WebappLoader.init(WebappLoader.java:612) at org.apache.catalina.loader.WebappLoader.start(WebappLoader.java:644) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4231) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083) at org.apache.catalina.core.StandardHost.start(StandardHost.java:789) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478) at org.apache.catalina.core.StandardService.start(StandardService.java:480) at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313) at org.apache.catalina.startup.Catalina.start(Catalina.java:556) .. 12 more
But using jre 1.4 / tomcat5.0.27 / with Crimson.jar in classpath and other things remaining the same , there are no issues at all.
But, I need get this combo (jre 1.5/tomcat5.0.27/with Crimson.jar ) up and running.
Moreover i dont understand the issue very clear myself. Because, i keep the Crimson.jar in classpath and the class "org.apache.crimson.jaxp.DocumentBuilderFactoryImpl" is also being loaded by the system classloader. But, Still i get this peculiar "class not found" as the cause from the Tomcat classloader.
Where am i missing the point. Some one please enlighten me on this.
Any help is very much appreciated.
Note: I have solved this problem by following the java endorsed standard mechanism. But i want a direct solution and not a workaround......
And also any one explain the root cause behind this exception.
thanks and regards, Sam.
Ernest Friedman-Hill
author and iconoclast
Marshal
Web apps won't load things from the CLASSPATH environment variable, if that's what you're saying; you need to actually install crimson.jar in the right place in Tomcat. For a single Web app, you can just put it in the Web app's WEB-INF/lib directory. If you want it to be shared by all web apps, then the TOMCAT/shared/lib directory is the place to put it.
Also, you might want to look and make sure that you are using the JRE that is in your jdk1.5 subdirectory.
Ray
samurfriend sam
Greenhorn
Joined: Mar 25, 2006
Posts: 2
posted
0
Thanks for the info friends,
But everything seems to be correct in case of jdk1.4. If i go for endorsed standard mehcanism, then i able to solve the problem. I have a got a workaround , but i want to know the exact root cause behind this issue.
Help me in this regard.
Regards Sam
Kevin Kilroy
Greenhorn
Joined: Nov 02, 2007
Posts: 1
posted
0
Originally posted by samurfriend sam: Thanks for the info friends,
But everything seems to be correct in case of jdk1.4. If i go for endorsed standard mehcanism, then i able to solve the problem. I have a got a workaround , but i want to know the exact root cause behind this issue.
Help me in this regard.
Regards Sam
Hi, can you explain your workaround please, since I am having the exact same problem.
Crimson is an XML parser, as far as I know - was this the XML parser that Sun included with Java 1.4?
Why did you make your application dependent on that particular XML parser? It's a good idea to fix your application, so that it uses only the standard XML API, and isn't dependent on a particular XML parser such as Crimson.
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