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From "Charles Moulliard (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CAMEL-9057) Camel Example Servlet REST generates java.lang.NoClassDefFoundError: scala/xml/PrettyPrinter
Date Wed, 05 Aug 2015 16:20:04 GMT

     [ https://issues.apache.org/jira/browse/CAMEL-9057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Charles Moulliard reassigned CAMEL-9057:
----------------------------------------

    Assignee: Charles Moulliard

> Camel Example Servlet REST generates java.lang.NoClassDefFoundError: scala/xml/PrettyPrinter
> --------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-9057
>                 URL: https://issues.apache.org/jira/browse/CAMEL-9057
>             Project: Camel
>          Issue Type: Bug
>          Components: examples
>    Affects Versions: 2.16.0
>            Reporter: Charles Moulliard
>            Assignee: Charles Moulliard
>
> After starting jetty:run maven goal and accessing the apiDoc of Swagger (http://localhost:8080/camel-example-servlet-rest-tomcat/api-docs/myCamel),
the following error is reported
> {code}
> 2015-08-05 17:42:18.053:INFO:oejs.Server:main: Started @18962ms
> [INFO] Started Jetty Server
> 2015-08-05 17:42:26.619:WARN:oejs.ServletHandler:qtp1891031939-25: Error for /camel-example-servlet-rest-tomcat/api-docs/myCamel
> java.lang.NoClassDefFoundError: scala/xml/PrettyPrinter
>         at com.wordnik.swagger.core.util.JsonSerializer$.<init>(JsonSerializer.scala:31)
>         at com.wordnik.swagger.core.util.JsonSerializer$.<clinit>(JsonSerializer.scala)
>         at org.apache.camel.component.swagger.RestSwaggerApiDeclarationServlet.renderResourceListing(RestSwaggerApiDeclarationServlet.scala:225)
>         at org.apache.camel.component.swagger.RestSwaggerApiDeclarationServlet.doGet(RestSwaggerApiDeclarationServlet.scala:111)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
>         at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
>         at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
>         at org.apache.camel.component.swagger.RestSwaggerCorsFilter.doFilter(RestSwaggerCorsFilter.scala:44)
>         at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>         at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
>         at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
>         at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
>         at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
>         at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
>         at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
>         at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>         at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
>         at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
>         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
>         at org.eclipse.jetty.server.Server.handle(Server.java:497)
>         at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
>         at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
>         at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
>         at java.lang.Thread.run(Thread.java:745)
> Caused by: 
> java.lang.ClassNotFoundException: scala.xml.PrettyPrinter
>         at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
>         at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
>         at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
>         at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
>         at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:450)
>         at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:403)
>         at com.wordnik.swagger.core.util.JsonSerializer$.<init>(JsonSerializer.scala:31)
>         at com.wordnik.swagger.core.util.JsonSerializer$.<clinit>(JsonSerializer.scala)
>         at org.apache.camel.component.swagger.RestSwaggerApiDeclarationServlet.renderResourceListing(RestSwaggerApiDeclarationServlet.scala:225)
>         at org.apache.camel.component.swagger.RestSwaggerApiDeclarationServlet.doGet(RestSwaggerApiDeclarationServlet.scala:111)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
> {code}
> when the same url is called a second time, then we get another class not found error

> {code}
> 2015-08-05 17:47:33.803:WARN:oejs.ServletHandler:qtp1891031939-33: Error for /camel-example-servlet-rest-tomcat/api-docs/myCamel
> java.lang.NoClassDefFoundError: Could not initialize class com.wordnik.swagger.core.util.JsonSerializer$
>         at org.apache.camel.component.swagger.RestSwaggerApiDeclarationServlet.renderResourceListing(RestSwaggerApiDeclarationServlet.scala:225)
>         at org.apache.camel.component.swagger.RestSwaggerApiDeclarationServlet.doGet(RestSwaggerApiDeclarationServlet.scala:111)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
>         at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
>         at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
>         at org.apache.camel.component.swagger.RestSwaggerCorsFilter.doFilter(RestSwaggerCorsFilter.scala:44)
>         at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>         at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
>         at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
>         at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
>         at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
>         at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
>         at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
>         at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
>         at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>         at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
>         at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
>         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
>         at org.eclipse.jetty.server.Server.handle(Server.java:497)
>         at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
>         at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
>         at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
>         at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
>         at java.lang.Thread.run(Thread.java:745)
> {code}



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