Major Description
After upgrading a springboot application to Camel 3.18.0, received the following exception during startup (Spring AutoConfiguration):
java.io.FileNotFoundException: class path resource [.class] cannot be opened because it does not exist
It is most likely related to a camel cxf class. A breakpoint in Spring AutoConfigurationSorter.java shows that the list of camel classNames to be configured contains an empty class name ("") between org.apache.camel.component.cxf.jaxrs.springboot.CxfRsComponentConverter and org.apache.camel.component.cxf.jaxws.springboot.CxfComponentAutoConfiguration. See the attached screenshots.
Here is the stacktrace:
java.lang.IllegalStateException: Unable to read meta-data for class
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.getAnnotationMetadata(AutoConfigurationSorter.java:237) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.getOrder(AutoConfigurationSorter.java:208) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.access$000(AutoConfigurationSorter.java:154) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter.lambda$getInPriorityOrder$0(AutoConfigurationSorter.java:64) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at java.util.TimSort.countRunAndMakeAscending(TimSort.java:355) ~[?:?]
at java.util.TimSort.sort(TimSort.java:234) ~[?:?]
at java.util.Arrays.sort(Arrays.java:1515) ~[?:?]
at java.util.ArrayList.sort(ArrayList.java:1750) ~[?:?]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter.getInPriorityOrder(AutoConfigurationSorter.java:62) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at org.springframework.boot.autoconfigure.AutoConfigurationImportSelector$AutoConfigurationGroup.sortAutoConfigurations(AutoConfigurationImportSelector.java:474) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at org.springframework.boot.autoconfigure.AutoConfigurationImportSelector$AutoConfigurationGroup.selectImports(AutoConfigurationImportSelector.java:459) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorGrouping.getImports(ConfigurationClassParser.java:882) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorGroupingHandler.processGroupImports(ConfigurationClassParser.java:809) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorHandler.process(ConfigurationClassParser.java:780) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:193) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplication$run.call(Unknown Source) ~[?:?]
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47) ~[groovy-3.0.10.jar:3.0.10]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125) ~[groovy-3.0.10.jar:3.0.10]
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:148) ~[groovy-3.0.10.jar:3.0.10]
at com.pci.custebalite.Application.main(Application.groovy:46) ~[classes!/:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) ~[custebalite-thin-6.2.0.100-SNAPSHOT.jar:?]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) ~[custebalite-thin-6.2.0.100-SNAPSHOT.jar:?]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) ~[custebalite-thin-6.2.0.100-SNAPSHOT.jar:?]
at org.springframework.boot.loader.PropertiesLauncher.main(PropertiesLauncher.java:467) ~[custebalite-thin-6.2.0.100-SNAPSHOT.jar:?]
Caused by: java.io.FileNotFoundException: class path resource [.class] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:199) ~[spring-core-5.3.21.jar:5.3.21]
at org.springframework.core.type.classreading.SimpleMetadataReader.getClassReader(SimpleMetadataReader.java:55) ~[spring-core-5.3.21.jar:5.3.21]
at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:49) ~[spring-core-5.3.21.jar:5.3.21]
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[spring-core-5.3.21.jar:5.3.21]
at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.createMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:86) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.getMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:73) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:81) ~[spring-core-5.3.21.jar:5.3.21]
at org.springframework.boot.autoconfigure.AutoConfigurationSorter$AutoConfigurationClass.getAnnotationMetadata(AutoConfigurationSorter.java:233) ~[spring-boot-autoconfigure-2.7.1.jar:2.7.1]
... 38 more
Caused by: java.io.FileNotFoundException: class path resource [.class] cannot be opened because it does not exist
