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https://issues.apache.org/jira/browse/CAMEL-12536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16490400#comment-16490400
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Andrea Cosentino commented on CAMEL-12536:
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I'm not completely sure we can get rid of that dependency, we can try by
removing that, but since the fix is needed also on 2.21.x maybe I would go with
the exclusions for the moment and after that we can take a look at a different
solution
> camel-google-mail: adding the camel component to a spring boot project leads
> to java.lang.NoSuchMethodError:
> javax.servlet.ServletContext.getClassLoader()Ljava/lang/ClassLoader;
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-12536
> URL: https://issues.apache.org/jira/browse/CAMEL-12536
> Project: Camel
> Issue Type: Bug
> Affects Versions: 2.21.1, 2.22.0
> Reporter: Luca Burgazzoli
> Assignee: Willem Jiang
> Priority: Major
> Attachments: project.tgz
>
>
> I've created a very simple spring boot (1.x) which includes camel-google-mail
> as dependency and when running the application, the following exception is
> thrown:
> {code}
> java.lang.reflect.InvocationTargetException
> 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.boot.maven.AbstractRunMojo$LaunchRunner.run
> (AbstractRunMojo.java:527)
> at java.lang.Thread.run (Thread.java:748)
> Caused by: org.springframework.context.ApplicationContextException: Unable to
> start embedded container; nested exception is java.lang.NoSuchMethodError:
> javax.servlet.ServletContext.getClassLoader()Ljava/lang/ClassLoader;
> at
> org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh
> (EmbeddedWebApplicationContext.java:137)
> at org.springframework.context.support.AbstractApplicationContext.refresh
> (AbstractApplicationContext.java:537)
> at
> org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh
> (EmbeddedWebApplicationContext.java:122)
> at org.springframework.boot.SpringApplication.refresh
> (SpringApplication.java:693)
> at org.springframework.boot.SpringApplication.refreshContext
> (SpringApplication.java:360)
> at org.springframework.boot.SpringApplication.run
> (SpringApplication.java:303)
> at org.springframework.boot.SpringApplication.run
> (SpringApplication.java:1118)
> at org.springframework.boot.SpringApplication.run
> (SpringApplication.java:1107)
> at test.Application.main (Application.java:9)
> at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke
> (NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:498)
> at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run
> (AbstractRunMojo.java:527)
> at java.lang.Thread.run (Thread.java:748)
> Caused by: java.lang.NoSuchMethodError:
> javax.servlet.ServletContext.getClassLoader()Ljava/lang/ClassLoader;
> at io.undertow.websockets.jsr.Bootstrap.handleDeployment
> (Bootstrap.java:92)
> at io.undertow.servlet.core.DeploymentManagerImpl.handleExtensions
> (DeploymentManagerImpl.java:263)
> at io.undertow.servlet.core.DeploymentManagerImpl.deploy
> (DeploymentManagerImpl.java:153)
> at
> org.springframework.boot.context.embedded.undertow.UndertowEmbeddedServletContainerFactory.createDeploymentManager
> (UndertowEmbeddedServletContainerFactory.java:412)
> at
> org.springframework.boot.context.embedded.undertow.UndertowEmbeddedServletContainerFactory.getEmbeddedServletContainer
> (UndertowEmbeddedServletContainerFactory.java:234)
> at
> org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer
> (EmbeddedWebApplicationContext.java:164)
> at
> org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh
> (EmbeddedWebApplicationContext.java:134)
> at org.springframework.context.support.AbstractApplicationContext.refresh
> (AbstractApplicationContext.java:537)
> at
> org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh
> (EmbeddedWebApplicationContext.java:122)
> at org.springframework.boot.SpringApplication.refresh
> (SpringApplication.java:693)
> at org.springframework.boot.SpringApplication.refreshContext
> (SpringApplication.java:360)
> at org.springframework.boot.SpringApplication.run
> (SpringApplication.java:303)
> at org.springframework.boot.SpringApplication.run
> (SpringApplication.java:1118)
> at org.springframework.boot.SpringApplication.run
> (SpringApplication.java:1107)
> at test.Application.main (Application.java:9)
> 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.boot.maven.AbstractRunMojo$LaunchRunner.run
> (AbstractRunMojo.java:527)
> at java.lang.Thread.run (Thread.java:748)
> {code}
> Sample project included in the attached reproducer
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