Hey
I don't think that is an ipojo problem because it is just trying to create
proxy for interface by provided dependency
So if one of your component has dependency
javax.servlet.descriptor.JspPropertyGroupDescriptor ipojo will try to find
this interface and create proxy
So if you have upgraded from javax to jakarta I think you should check
javax dependencies and change them to jakarta package. That's a common
problem for jaxb for example when migrating from java 8 to java 11+

ср, 6 дек. 2023 г. в 21:54, Bengt Rodehav <be...@rodehav.com>:

> I have a problem with iPojo not finding the JspPropertyGroupDescriptor
> class. I have discussed this in the ops4j mailing list:
> https://groups.google.com/g/ops4j/c/qMSZT4RNRqc
>
> But, I'm not sure if this is a Pax-Web problem or an iPojo problem.
>
> I am using Karaf 4.4.4 with Pax-Web 8.0.22.
>
> I get the following error in the log:
>
> 2023-11-30T17:55:19,274 | ERROR | [iPOJO] pool-1-thread-1 | web-console
>                  | 108 - se.digia.seco.web.web-console - 3.1.0.SNAPSHOT |
> [ERROR]  : Cannot create the proxy object
> java.lang.NoClassDefFoundError:
> javax/servlet/descriptor/JspPropertyGroupDescriptor
> at java.lang.Class.getDeclaredMethods0(Native Method) ~[?:?]
> at java.lang.Class.privateGetDeclaredMethods(Class.java:3402) ~[?:?]
> at java.lang.Class.privateGetPublicMethods(Class.java:3427) ~[?:?]
> at java.lang.Class.getMethods(Class.java:2019) ~[?:?]
> at
>
> org.apache.felix.ipojo.handlers.dependency.ProxyGenerator.dumpProxy(ProxyGenerator.java:89)
> ~[!/:?]
> at
>
> org.apache.felix.ipojo.handlers.dependency.Dependency$SmartProxyFactory.getProxyClass(Dependency.java:1133)
> ~[!/:?]
> at
>
> org.apache.felix.ipojo.handlers.dependency.Dependency$SmartProxyFactory.getProxy(Dependency.java:1151)
> [!/:?]
> at
>
> org.apache.felix.ipojo.handlers.dependency.Dependency.start(Dependency.java:516)
> [!/:?]
> at
>
> org.apache.felix.ipojo.handlers.dependency.DependencyHandler.__M_start(DependencyHandler.java:496)
> [!/:?]
> at
>
> org.apache.felix.ipojo.handlers.dependency.DependencyHandler.start(DependencyHandler.java)
> [!/:?]
> at org.apache.felix.ipojo.HandlerManager.start(HandlerManager.java:136)
> [!/:?]
> at org.apache.felix.ipojo.InstanceManager.start(InstanceManager.java:421)
> [!/:?]
> at
>
> org.apache.felix.ipojo.ComponentFactory.createInstance(ComponentFactory.java:179)
> [!/:?]
> at
>
> org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:319)
> [!/:?]
> at
>
> org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:240)
> [!/:?]
> at
>
> org.apache.felix.ipojo.extender.internal.linker.ManagedType$InstanceSupport$1.call(ManagedType.java:312)
> [!/:?]
> at
>
> org.apache.felix.ipojo.extender.internal.linker.ManagedType$InstanceSupport$1.call(ManagedType.java:306)
> [!/:?]
> at
>
> org.apache.felix.ipojo.extender.internal.queue.JobInfoCallable.call(JobInfoCallable.java:114)
> [!/:?]
> at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
> at
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
> [?:?]
> at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
> [?:?]
> at java.lang.Thread.run(Thread.java:833) [?:?]
> Caused by: java.lang.ClassNotFoundException:
> javax.servlet.descriptor.JspPropertyGroupDescriptor not found by
> org.ops4j.pax.web.pax-web-api [94]
> at
>
> org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1591)
> ~[?:?]
> at
>
> org.apache.felix.framework.BundleWiringImpl.access$300(BundleWiringImpl.java:79)
> ~[?:?]
> at
>
> org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1976)
> ~[?:?]
> at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
> ... 22 more
>
> In Pax-Web 7.3.23 (used in Karaf 4.3.3) the following bundle was included:
>
>   javax.servlet-api/3.1.0
>
> In Pax-Web 8.0.22 (used in Karaf 4.4.4) it has been replaced by the
> following pair:
>
>   jakarta.servlet-api/4.0.4
>   pax-web-compatibility-servlet31/8.0.22
>
> I am using Servlet 3.1 which was provided cleanly in Pax-Web 7.3.23. But in
> 8.0.22 it is instead provided by the Servlet 4.0 bundle in combination with
> a fragment that (if I understand correctly) re-exports that code as version
> 3.1. Correct me if I am wrong.
>
> This setup doesn't seem to work with iPojo. It's unclear to me why this is.
>
> Looking at the bundle org.ops4j.pax.web/pax-web-api/8.0.22, it seems like
> it only imports the following javax.servlet packages:
>
>   javax.servlet; version="[3.1, 5)",
>   javax.servlet.annotation; version="[3.1, 5)",
>   javax.servlet.http; version="[3.1, 5)"
>
> ...but not
>
>   javax.servlet.descriptor
>
> If I add the following:
>
>   javax.servlet.descriptor;version="[3.1,5)"
>
> To the Import-Package section of the MANIFEST.MF of the pax-web-api jar,
> then it works. It makes me wonder if this import is missing in pax-web-api.
> On the other hand I wonder why iPojo is looking for this class in
> pax-web-api and not in the bundle that actually exports it.
>
> /Bengt
>

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