📋 Maven CheatSheet

Artefakte

Artefakt ins nexus einspielen

mvn clean deploy

Artefakt ins lokale .mvn einspielen

mvn clean install

Artefakt Abhängigkeiten auflösen

mvn dependency:resolve

Sourcecode hinzufügen

mvn source:jar install

Tests überspringen

-Dmaven.test.skip  //Skip compile and running tests
-DskipTests        //Compile, but skip tests

Auf Dependency Updates prüfen

mvn versions:display-dependency-updates

Doppelte dependencies auflisten

mvn dependency:analyze-duplicate

(Un-)benutzte dependencies auflisten

mvn dependency:analyze

https://carlosbecker.com/posts/maven-dependency-hell/

Multithreading

-T 4  # Use 4 Thread
-T 1C # Use 1 Thread per available Core

Jar manuell ins Nexus Repository deployen

mvn deploy:deploy-file -Dfile=your-lib.jar -DrepositoryId=its-nexus -Durl=http://nexus.local.itscope.com/content/repositories/releases -DartifactId=lib-id -DgroupId=lib-group -Dversion=lib-version

Parameter Finetuning

https://zeroturnaround.com/rebellabs/your-maven-build-is-slow-speed-it-up/

MAVEN_OPTS= -XX:+TieredCompilation -XX:TieredStopAtLevel=1
mvn -T 1C install -pl $moduleName -am —offline
//no clean

Doppelte Abhängikeiten auflisten

Dealing with Maven dependency hell - Carlos Alexandro Becker

mvn dependency:list -Dsort=true |
  grep "^\[INFO\]    " |
  awk '{print $2}' |
  cut -f1-4 -d: |
  sort |
  uniq |
  cut -f1-3 -d: |
  uniq -c |
  grep -v '^ *1 '

Maven will check for a newer UPDATE version on every build

<repository>
   <id>foo-repository</id>
   <url>...</url>
   <snapshots>
      <enabled>true</enabled>
      <updatePolicy>always</updatePolicy>
   </snapshots>
</repository>

Maven Konfiguration `mavenrc`

Maven can apparently be configured with the mostly undocumented files ~/.mavenrc (for current user) and /etc/mavenrc (for all users). In there, environment variables and command line options for the Java command can be configured.

With this, it is easy to set JAVA_HOME just for the Maven command, which will lead to it running with the specified version. Here's the content of that file:

JAVA_HOME="/path/to/your/jdk-9"

Widgetset lokal starten

	* Ins Verzeichnis des einzelnen Widgets gehen
cd de.itscope.redgiant.widget.nanoscrollpanel
	* Bauen:
mvn -Pdemo clean install -Dgwt.extraJvmArgs="-Xms1024m -Xmx2048m"
	* Jetty starten:
mvn -Pdemo jetty:run
http://127.0.0.1:8080/#?debug!comparison
	* Codeserver starten (superdevmode):
mvn -Pdemo vaadin:run-codeserver
http://localhost:9876/

TobseF/MavenCheatSheet.md