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[jetty-users] NoClassDefFoundError : Embedded Jetty
  • From: Sujay Pujari <sujay_pujari@xxxxxxxxxxxxxx>
  • Date: Wed, 11 Mar 2020 19:17:35 +0000
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  • Thread-topic: NoClassDefFoundError : Embedded Jetty

Hello Jetty users,

 

We are migrating Jetty from v6 to ver 9.4.27 & using embedded Jetty.

Where in authentication is performed using form based , Jaas authentication.

In Jaas.conf file we have configured to use following  custom module

class com.acme.es.nuvo.ediscovery.jaas.DiscoveryLoginModule which  extends from AbstractLoginModule.

Now inside Login method of this class, We have following line of code

Credential cr =  Credential.getCredential(pwdStr);

 

Where we are getting NoClassDefFoundError for org.eclipse.jetty.util.security.Credential.

Note : This issue is observed on Jetty 9.x & 8.x  ( but was working fine with 6.x )

 

Inspite of the  fact that jetty-util jar corresponding to this is present in the buildpath.

Also,

Verbose:class shows that this class is getting loaded.

class load: org.eclipse.jetty.util.security.Credential from: file:/../lib/Jetty9.4.15/jetty-util-9.4.15.v20190215.jar

 

Can anybody suggest what I might be missing ? Any appropriate way to troubleshoot this?

Any help would be really appreciated.

 

Here is detailed stack:

 

javax.security.auth.login.LoginException: java.lang.NoClassDefFoundError: org.eclipse.jetty.util.security.Credential

                at com.acme.es.nuvo.ediscovery.jaas.DiscoveryLoginModule.login(DiscoveryLoginModule.java:148)

                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

                at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95)

                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)

                at java.lang.reflect.Method.invoke(Method.java:508)

                at javax.security.auth.login.LoginContext.invoke(LoginContext.java:788)

                at javax.security.auth.login.LoginContext.access$000(LoginContext.java:196)

                at javax.security.auth.login.LoginContext$4.run(LoginContext.java:698)

                at javax.security.auth.login.LoginContext$4.run(LoginContext.java:696)

                at java.security.AccessController.doPrivileged(AccessController.java:650)

                at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:696)

                at javax.security.auth.login.LoginContext.login(LoginContext.java:597)

                at org.eclipse.jetty.jaas.JAASLoginService.login(JAASLoginService.java:251)

                at org.eclipse.jetty.security.authentication.LoginAuthenticator.login(LoginAuthenticator.java:67)

                at org.eclipse.jetty.security.authentication.FormAuthenticator.login(FormAuthenticator.java:182)

                at org.eclipse.jetty.security.authentication.DeferredAuthentication.login(DeferredAuthentication.java:118)

                at org.eclipse.jetty.server.Request.login(Request.java:2411)

                at com.acme.es.nuvo.ediscovery.ui.actions.LoginAction.login(LoginAction.java:70)

                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

                at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95)

                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)

                at java.lang.reflect.Method.invoke(Method.java:508)

                at com.acme.es.nuvo.ediscovery.ui.DiscoveryAction.dispatchMethod(DiscoveryAction.java:149)

                at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)

                at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)

                at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)

                at com.acme.es.nuvo.ediscovery.ui.DiscoveryRequestProcessor.process(DiscoveryRequestProcessor.java:84)

                at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)

                at com.acme.es.nuvo.ediscovery.ui.SecureServlet.process(SecureServlet.java:67)

                at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)

                at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)

                at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

                at org.eclipse.jetty.servlet.ServletHolder$NotAsyncServlet.service(ServletHolder.java:1395)

                at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:755)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1617)

                at com.acme.es.nuvo.common.CompressionFilter.doFilter(CompressionFilter.java:80)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)

                at com.acme.es.nuvo.common.CacheFilter.doFilter(CacheFilter.java:92)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)

                at com.acme.es.nuvo.common.Utf8Filter.doFilter(Utf8Filter.java:34)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)

                at com.acme.es.nuvo.common.LocaleFilter.doFilter(LocaleFilter.java:57)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)

                at com.acme.es.nuvo.common.SecurityTokenFilter.doFilter(SecurityTokenFilter.java:78)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)

                at com.acme.es.nuvo.common.SSLFilter.doFilter(SSLFilter.java:58)

                at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1596)

                at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)

                at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)

                at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:566)

                at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)

                at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)

                at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610)

                at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)

                at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1300)

                at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)

                at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)

                at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580)

                at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)

                at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1215)

                at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)

                at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221)

                at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)

                at org.eclipse.jetty.server.handler.DebugHandler.handle(DebugHandler.java:81)

                at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)

                at org.eclipse.jetty.server.Server.handle(Server.java:500)

                at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)

                at org.eclipse.jetty.server.HttpChannel$$Lambda$59.0000000000D9AA80.dispatch(Unknown Source)

                at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547)

                at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)

                at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)

                at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)

                at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)

                at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:543)

                at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:398)

                at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:161)

                at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)

                at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)

                at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)

                at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)

                at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)

                at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)

                at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)

                at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)

                at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)

                at java.lang.Thread.run(Thread.java:785)

Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.util.security.Credential

                at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:565)

                at java.lang.ClassLoader.loadClass(ClassLoader.java:809)

                ... 86 more

 

 

Other details :

 

A.

We are instantiating jetty instance through Java code and where we refer jetty.xml for server configuration.

 

B.

In jetty.xml we uses following

 

<Configure id="Server" class="org.eclipse.jetty.server.Server">

…

…

 

      <Call name="addBean">

          <Arg>

            <New id="DeploymentManager" class="org.eclipse.jetty.deploy.DeploymentManager">

              <Set name="contexts">

                <Ref refid="Contexts" />

              </Set>             

              <Call id="webappprovider" name="addAppProvider">

                <Arg>

                  <New class="org.eclipse.jetty.deploy.providers.WebAppProvider">

                    <Set name="monitoredDirName"><Property name="Project.home" default="." />/config/jetty_contexts</Set>                   

                    <Set name="scanInterval">0</Set>

                    <Set name="extractWars">true</Set>     

                   <!--  <Set name="Recursive">true</Set>     -->         

                  </New>

                </Arg>

              </Call>  

            </New>

          </Arg>

       </Call>

 

…

 

     

</Configure>

 

 

 

C.  one of the file present at <project.home>/config/jetty_contexts is ediscovery.xml

 

<Configure class="org.eclipse.jetty.webapp.WebAppContext">

 

 

  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->

  <!-- Required minimal context configuration :                        -->

  <!--  + contextPath                                                  -->

  <!--  + war OR resourceBase                                          -->

  <!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->

 

 

  <Set name="contextPath">/ediscovery</Set>

   <!-- <Set name="parentLoaderPriority">true</Set>-->

   <Set name="war"><SystemProperty name="Project.home" default="."/>/lib/Application_ui.war</Set>

 

  …..

 

 

  <Set name="securityHandler">

    <New class="org.eclipse.jetty.security.ConstraintSecurityHandler">

     <Set name="loginService">

       <New class="org.eclipse.jetty.jaas.JAASLoginService">

         <Set name="name">ediscovery</Set>

         <Set name="loginModuleName">DiscoveryLoginModule</Set>

         <Set name="CallbackHandlerClass">

                  org.eclipse.jetty.jaas.callback.DefaultCallbackHandler

            </Set>

            <Set name="roleClassNames">

                <Array type="java.lang.String">

                  <Item>org.eclipse.jetty.jaas.JAASRole</Item>

                </Array>

              </Set>

       </New>

     </Set>

     <Set name="checkWelcomeFiles">true</Set>

    </New>

  </Set>

 

…

 

 

</Configure>

 

 

Now I have few observations.

 

When in File C i.e. ediscovery.xml I make following line uncommented

<Set name="parentLoaderPriority">true</Set>

Then,

In my eclipse I don’t see any No Class Def Found Error.

 

But,

  1. In my build environment ( installed version, I see same error , classpath has required jars present )
  2. Jetty 6 we were nor setting parentLoaderPriority  to True.

 

 

 

 

Any help to troubleshoot this problem will be appreciated.

 

Thanks & Regards,

Sujay

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