War deployment to external container of choice - Tomcat

[Matthew Hannay]

We have the latest tomcat 7 servers

In my POM I have set <app.server></app.server>

so that it pulls down the cas-server-webapp overlay

I do a mvn clean compile package then copy the war to 

the webapps directory of the tomcat server. I then get a magnitude of errors

like it thinks its a spring boot application.

I have worked through 

https://apereo.github.io/2018/02/06/cas52-gettingstarted-overlay/

and

https://apereo.github.io/2016/10/04/casbootoverlay/

thus does not tell me much ....

One of the errors:

2018-02-15 05:37:08,530 ERROR [org.springframework.boot.SpringApplication] - <Application startup failed>

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [org.apereo.cas.web.CasWebApplication]; nested exception is java.lang.IllegalStateException: Unable to read meta-data for class org.apereo.cas.config.CasEmbeddedContainerTomcatConfiguration

        at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:556) ~[spring-context-4.3.12.RELEASE.jar:4.3.12.RELEASE]

        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:185) ~[spring-context-4.3.12.RELEASE.jar:4.3.12.RELEASE]

        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:308) ~[spring-context-4.3.12.RELEASE.jar:4.3.12.RELEASE]

Caused by: java.io.FileNotFoundException: class path resource [org/apereo/cas/config/CasEmbeddedContainerTomcatConfiguration.class] cannot be opened because it does not exist

MAYBE I AM missing a property?

[Simon Bear]

I assume you're trying to run the WAR in a container?  Do you have the exec profile in your POM?  (See https://github.com/apereo/cas-management-overlay/blob/master/pom.xml#L122)

If so, try deactivating it while running the maven build (eg ./mvnw -P-exec package).  Alternatively you could try adding a classifier to the spring boot repackaged artefact, which will leave the original WAR in tact:

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <version>${springboot.version}</version>
    <executions>
        <execution>
            <goals>
                <goal>build-info</goal>
                <goal>repackage</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        ...
        <classifier>exec</classifier>
        ...
    </configuration>
</plugin>

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[Matthew Hannay]

This is useful for modifying the POM to build a war for deployment to a tomcat or other container.

https://spring.io/guides/gs/convert-jar-to-war/

--Matt

[Richard Frovarp]

I ran into something not working on Tomcat 7. Can't remember if it was the IdP or the management application. Either way I had to go to Tomcat 8.5. Don't think that's the problem here, but you may want to go to 8.5 anyway.

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