Class not found: jakarta/servlet/ServletContextListener with OpenGrok 1.12.15 and Tomcat 9

[randygalbraith]

Hi Everyone. I am seeking assistance getting OpenGrok running.

I am unable to deploy source.war (from OpenGrok 1.12.15) to Tomcat 9.

I copy source.war to webapps/opengrok.war. Tomcat then expands the war file. This results in a failed deploy.

From localhost.2023-10-02.log:
java.lang.NoClassDefFoundError: jakarta/servlet/ServletContextListener

Version details from the Tomcat manager:

Tomcat Version: Apache Tomcat/9.0.80
JVM Version: 11.0.20.1+1
JVM Vendor: Eclipse Adoptium
OS Name: Linux
OS Version: 4.18.0-500.el8.x86_64
OS Architecture: amd64

The OS name from /etc/os-release is: CentOS Stream 8.

Here is the info from server.xml:

<Connector port              = "xxxxx"
           protocol          = "org.apache.coyote.http11.Http11NioProtocol"
           maxThreads        = "150"
           SSLEnabled        = "true"
           maxParameterCount = "1000" >

  <UpgradeProtocol className =
                   "org.apache.coyote.http2.Http2Protocol" />

    <SSLHostConfig protocols = "TLSv1.2" >
      <Certificate
          certificateKeyFile      = "<path-to-key>"
          certificateFile         = "<path-to-cert>"
          certificateChainFile    = "<path-to-cert>"
          certificateKeyPassword  = "<valid-password>"
          type                    = "RSA" />
    </SSLHostConfig>

</Connector>

Our team has used OpenGrok for years. This is an effort to upgrade to the latest version of OpenGrok.

Kind regards, -Randy

[vladak]

You need at least Tomcat 10.0.

[randygalbraith]

Thanks vladak. I feel rather silly now given the front page says: "Tomcat (10.x or later)". Alas, I've been working a number of upgrades and somehow missed that. Alas, for the moment, I must stick with Tomcat 9. I'll now look for the latest version of OpenGrok that supports Tomcat 9.

I see 1.6.0 says "OpenGrok now requires Tomcat 10" so I'll try 1.5.12.

Kind regards, -RAndy

[vladak]

No worries. I wish there was a way how to make this more robust, somehow making the .war file indicate the needed app server version/level.

[randygalbraith]

Hi vladak. I downloaded 1.5.12 and it deployed without problem. I was happy to see opengrok 1.3.4 makes a reference to Universal Ctags. So that ctags upgrade I'll be able to move forward with. Again, thanks, so much! Kind regards, -Randy