Monthly Archives: October 2019

Spring Boot @Autowired Abstract/Base Class

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Properly using (and not overusing) abstract classes is vital to having a cleanly organized and DRY application.  Developers tend to get confused when trying to inject services into abstract or base classes in Spring Boot though.

Setter injection actually works fine in base classes; but as noted here, you should  make sure to use the final keyword on the setter to prevent it from being overridden.

public abstract class AbstractSchemaService {
    ...
    private StringShorteningService shortener;

    @Autowired
    public final void setStringShorteningService(StringShorteningService shortener) {
        this.shortener = shortener;
    }
    ...
}

Artifactory + Maven Deploy +/- Jenkins – 502 Failure

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This is just a quick post…

If you are running a maven (mvn) deploy to artifactory, be it locally or through Jenkins/etc, and you get an error like this:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.8.2:deploy (default-deploy) on project sample-ws: Failed to deploy artifacts: Could not transfer artifact com.company.cs.sample:sample-ws:jar:3.2.2 from/to central (https://adlm.company.com/artifactory/sample-maven): Failed to transfer file https://adlm.company.com/artifactory/sample-maven/com/company/cs/sample/sample-ws/3.2.2/sample-ws-3.2.2.jar with status code 502 -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

You need to edit your ~/.settings.xml and add in your artifactory-user/artifactory-token (preferably for you on your own desktop and for a service account on your server).  You can generate your token in your user settings in the Aritfactory API.

<settings>
  <servers>
    <server>
      <id>central</id>
      <username>your-user</username>
      <password>your-token</password>
    </server>
  <server>
    <id>snapshots</id>
      <username>your-user</username>
      <password>your-token</password>
    </server>
  </servers>
</settings>