経緯

別サーバにたてている Nexus Repository Manager に pom.xml をデプロイしようとしたら Return code is: 401, ReasonPhrase: Unauthorized. が発生して BUILD FAILURE になった。

C:\xxx>mvn deploy
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building xxx x.x.x-SNAPSHOT
[INFO] ------------------------------------------------------------------------

...

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.540 s
[INFO] Finished at: 2019-09-18T10:47:41+09:00
[INFO] Final Memory: 11M/245M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project xxx: Failed to deploy artifacts: Could not transfer artifact xxx from/to xxx-snapshot (http://xx.xx.xx.xx/nexus/repository/snapshot/): Failed to transfer file: http://xx.xx.xx.xx/nexus/repository/snapshot/xxx. Return code is: 401, ReasonPhrase: Unauthorized. -> [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

解決方法

C:\Users\{your-username}\.m2\settings.xml にデプロイ先のサーバ情報が記述されていなかったので、追加することで解決。

pom.xml

  <distributionManagement>
    <snapshotRepository>
      <id>xxx-snapshot</id>
      <name>Snapshots</name>
      <url>http://xxx/nexus/repository/snapshot/</url>
    </snapshotRepository>
  </distributionManagement>

settings.xml

<settings>
	<servers>
		<server>
			<id>xxx-snapshot</id>
			<username>xxx</username>
			<password>xxx</password>
		</server>
	</servers>
</settings>