It's not the same without you

Join the community to find out what other Atlassian users are discussing, debating and creating.

Atlassian Community Hero Image Collage

Confluence app: Unable to scan for host components in plugin classes

Hi there,

I'm getting the following error when I'm installing my app on Confluence 5.7.1.

This does not happen if I install it on recent Confluence versions. Is it a specific error related to Confluence version. This also happens on 5.7.3.

2019-09-24 09:22:56,047 ERROR [UpmAsynchronousTaskManager:thread-4] [atlassian.plugin.loaders.ScanningPluginLoader] deployPluginFromUnit Because of the following exception: -- url: /rest/plugins/1.0/ | referer: http://localhost:8090/plugins/servlet/upm/marketplace/search?q=link%20preview | userName: admincom.atlassian.plugin.PluginParseException: Unable to scan for host components in plugin classes at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.execute(HostComponentSpringStage.java:62) at com.atlassian.plugin.osgi.factory.transform.DefaultPluginTransformer.transform(DefaultPluginTransformer.java:146) at com.atlassian.plugin.osgi.factory.OsgiPluginFactory.createOsgiPluginJar(OsgiPluginFactory.java:276) at com.atlassian.plugin.osgi.factory.OsgiPluginFactory.create(OsgiPluginFactory.java:202) at com.atlassian.plugin.loaders.ScanningPluginLoader.deployPluginFromUnit(ScanningPluginLoader.java:155) at com.atlassian.plugin.loaders.ScanningPluginLoader.loadFoundPlugins(ScanningPluginLoader.java:117) at com.atlassian.plugin.loaders.ForwardingPluginLoader.loadFoundPlugins(ForwardingPluginLoader.java:42) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at com.sun.proxy.$Proxy97.loadFoundPlugins(Unknown Source) at com.atlassian.plugin.loaders.PermissionCheckingPluginLoader.loadFoundPlugins(PermissionCheckingPluginLoader.java:30) at com.atlassian.plugin.manager.DefaultPluginManager.scanForNewPlugins(DefaultPluginManager.java:824) at com.atlassian.plugin.manager.DefaultPluginManager.installPlugins(DefaultPluginManager.java:773) at com.atlassian.confluence.plugin.EventDispatchingPluginController.installPlugins(EventDispatchingPluginController.java:95) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at com.sun.proxy.$Proxy104.installPlugins(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:134) at com.sun.proxy.$Proxy378.installPlugins(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at com.sun.proxy.$Proxy2822.installPlugins(Unknown Source) at com.atlassian.upm.core.install.AbstractPluginInstallHandler$1.doInTransaction(AbstractPluginInstallHandler.java:143) at com.atlassian.upm.core.install.AbstractPluginInstallHandler$1.doInTransaction(AbstractPluginInstallHandler.java:138) at com.atlassian.sal.core.transaction.HostContextTransactionTemplate$1.doInTransaction(HostContextTransactionTemplate.java:25) at com.atlassian.sal.spring.component.SpringHostContextAccessor$1.doInTransaction(SpringHostContextAccessor.java:88) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128) at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82) at sun.reflect.GeneratedMethodAccessor194.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:134) at com.sun.proxy.$Proxy295.doInTransaction(Unknown Source) at sun.reflect.GeneratedMethodAccessor194.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154) at com.sun.proxy.$Proxy295.doInTransaction(Unknown Source) at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21) at sun.reflect.GeneratedMethodAccessor206.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58) at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56) at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131) at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) at com.sun.proxy.$Proxy2834.execute(Unknown Source) at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installArtifacts(AbstractPluginInstallHandler.java:137) at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installArtifact(AbstractPluginInstallHandler.java:123) at com.atlassian.upm.core.install.JarPluginInstallHandler.installPluginInternal(JarPluginInstallHandler.java:52) at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installPlugin(AbstractPluginInstallHandler.java:64) at com.atlassian.upm.core.install.DefaultPluginInstallationService.execute(DefaultPluginInstallationService.java:117) at com.atlassian.upm.core.install.DefaultPluginInstallationService.install(DefaultPluginInstallationService.java:91) at com.atlassian.upm.install.UpmPluginInstallationService.install(UpmPluginInstallationService.java:97) at com.atlassian.upm.core.rest.resources.install.InstallTask.installFromFile(InstallTask.java:156) at com.atlassian.upm.core.rest.resources.install.InstallFromUriTask$1.apply(InstallFromUriTask.java:89) at com.atlassian.upm.core.rest.resources.install.InstallFromUriTask$1.apply(InstallFromUriTask.java:53) at com.atlassian.upm.api.util.Either$Right.fold(Either.java:173) at com.atlassian.upm.core.rest.resources.install.InstallFromUriTask.executeTask(InstallFromUriTask.java:52) at com.atlassian.upm.core.rest.resources.install.InstallTask.run(InstallTask.java:81) at com.atlassian.upm.core.async.AsynchronousTaskManager.executeTask(AsynchronousTaskManager.java:124) at com.atlassian.upm.core.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:102) at com.atlassian.upm.core.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:99) at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:42) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)Caused by: java.io.IOException: Error parsing class file at com.atlassian.plugin.osgi.util.ClassBinaryScanner.scanClassBinary(ClassBinaryScanner.java:66) at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.findUsedHostComponents(HostComponentSpringStage.java:194) at com.atlassian.plugin.osgi.factory.transform.stage.HostComponentSpringStage.execute(HostComponentSpringStage.java:58) ... 117 moreCaused by: java.lang.ArrayIndexOutOfBoundsException2019-09-24 09:22:56,261 WARN [UpmAsynchronousTaskManager:thread-4] [upm.core.install.DefaultPluginInstallationService] execute Plugin installation failed: Unknown error, plugin not installed -- url: /rest/plugins/1.0/ | referer: http://localhost:8090/plugins/servlet/upm/marketplace/search?q=link%20preview | userName: admin2019-09-24 09:22:56,261 WARN [UpmAsynchronousTaskManager:thread-4] [upm.core.install.DefaultPluginInstallationService] execute com.atlassian.upm.spi.PluginInstallException: Unknown error, plugin not installed -- url: /rest/plugins/1.0/ | referer: http://localhost:8090/plugins/servlet/upm/marketplace/search?q=link%20preview | userName: admincom.atlassian.upm.spi.PluginInstallException: Unknown error, plugin not installed at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installArtifact(AbstractPluginInstallHandler.java:126) at com.atlassian.upm.core.install.JarPluginInstallHandler.installPluginInternal(JarPluginInstallHandler.java:52) at com.atlassian.upm.core.install.AbstractPluginInstallHandler.installPlugin(AbstractPluginInstallHandler.java:64) at com.atlassian.upm.core.install.DefaultPluginInstallationService.execute(DefaultPluginInstallationService.java:117) at com.atlassian.upm.core.install.DefaultPluginInstallationService.install(DefaultPluginInstallationService.java:91) at com.atlassian.upm.install.UpmPluginInstallationService.install(UpmPluginInstallationService.java:97) at com.atlassian.upm.core.rest.resources.install.InstallTask.installFromFile(InstallTask.java:156) at com.atlassian.upm.core.rest.resources.install.InstallFromUriTask$1.apply(InstallFromUriTask.java:89) at com.atlassian.upm.core.rest.resources.install.InstallFromUriTask$1.apply(InstallFromUriTask.java:53) at com.atlassian.upm.api.util.Either$Right.fold(Either.java:173) at com.atlassian.upm.core.rest.resources.install.InstallFromUriTask.executeTask(InstallFromUriTask.java:52) at com.atlassian.upm.core.rest.resources.install.InstallTask.run(InstallTask.java:81) at com.atlassian.upm.core.async.AsynchronousTaskManager.executeTask(AsynchronousTaskManager.java:124) at com.atlassian.upm.core.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:102) at com.atlassian.upm.core.async.AsynchronousTaskManager$1.call(AsynchronousTaskManager.java:99) at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:42) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

Any suggestion?

 

Thank you.

1 answer

1 accepted

0 votes
Answer accepted

Hello Rui,

Thank you for contacting us about this. 

There was an issue in the past where users were getting a similar error to yours when compiling plugins with java 8:

The fix is to update UPM to the latest version. See How to manually reset or manually upgrade UPM. Since you confirmed that it doesn't exist in latest versions, I think it is indeed because you are using a version of Confluence which is no longer supported (Confluence 5.7.* reached End of Life back on 27 January 2017.)

The solution for this is to run your add-on on a supported version of Confluence.

Let me know if you have any trouble with that.

Regards,

Shannon

Suggest an answer

Log in or Sign up to answer
TAGS
Community showcase
Posted in Confluence

What project did you transition or start on Confluence with the shift to remote work?

It’s been great to hear from fellow users over the last few weeks about the best tips and fun moments you’ve had working on Confluence since the transition to working remote. I’d love to keep the c...

109 views 3 7
Join discussion

Community Events

Connect with like-minded Atlassian users at free events near you!

Find an event

Connect with like-minded Atlassian users at free events near you!

Unfortunately there are no Community Events near you at the moment.

Host an event

You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events

Events near you