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Mavens cheat cheat

How to get sources and documentation attached to Eclipse for Maven Dependencies

mvn eclipse:eclipse -DdownloadSources -DdownloadJavadocs

or

mvn -Declipse.downloadSources=true eclipse:eclipse

How to debug Maven tests

mvn test -Dmaven.surefire.debug="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=9000 -Xnoagent -Djava.compiler=NONE"

How to debug Maven plugins

on windows set MAVEN_OPTS=-Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=1234

on linux export MAVEN_OPTS="-Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=1234"

How to retrieve nexus artifact with wget

http://nexus-host:8000/nexus/service/local/artifact/maven/content?r=public-snapshots&g=net.matlux&a=engine-services&v=LATEST&c=war

wget "http://repository.sonatype.org/service/local/artifact/maven/content?

r=snapshots&g=org.sonatype.nexus&a=nexus-utils&v=LATEST" --content-disposition

Where:

r = the id of the repository or group to search (Required) g = the groupId of the file (Required) a = the artifactId of the file (Required) v = the version of the file, this may be "LATEST", "RELEASE", a version number like "2.0", or a snapshot version number like "2.0-SNAPSHOT". (Required) c = the classifier of the file (Optional) e = the type or extension of the file (Optional) p = packaging (Nexus will resolve known packaging types to the correct extension). (Optional) If the version is not a concrete version, then Nexus will look in the maven-metadata.xml in the same way Maven does to resolve the version. The filename will be set in the content-disposition header field, so if you are using wget, be sure to use the --content-disposition flag so the filename is correct.

There is an alternate form of the API that uses redirects to work around the content-disposition setting. This form is shown below:

wget "http://repository.sonatype.org/service/local/artifact/maven/redirect? r=snapshots&g=org.sonatype.nexus&a=nexus-utils&v=LATEST"

example of how to retrieve tomcat:

wget http://nexus-host/nexus/service/local/repo_groups/releases/content/net/matlux/packages/tomcat-runtime/unity-tomcat-runtime-assembly/7.32/unity-tomcat-runtime-assembly-7.32-package.tar.gz

Display dependency tree

mvn dependency:tree

How to display all profiles

mvn help:all-profiles

How to display active profiles

mvn help:active-profiles

How to use a profile

mvn -P profile1,profile2

How to disable a profile

mvn -P !profile1,!profile2

How to skip tests

mvn install -DskipTests

How to start one test

mvn clean integration-test -Dit.test=NewTest

How to pass parameters from teamcity to maven via profile

mvn clean install -Pdeploy-artifacts -P%conf.DEPLOY_ENV%

or

mvn clean install -Dmyapp.url=http://host1:4280/

then add something like this to pom:

    <properties>
        <myapp.url>http://hostdefault:8080/</myapp.url>
        <in-or-out-process.arg>-Dtest.type=out-process</in-or-out-process.arg>
        <exclude.some.tests>**/none*</exclude.some.tests>
        <soaktest.test>false</soaktest.test>
    </properties>

How to change version of a project

mvn versions:set -DnewVersion=$release_version -DgenerateBackupPoms=false versions:commit

Example

mvn versions:set -DnewVersion=1.2.3 -DgenerateBackupPoms=false versions:commit

How to deploy files to Nexus

mvn deploy:deploy-file -DpomFile=fleet-0.9.5.pom -DrepositoryId=myrepo-releases -Durl=http://hostname/nexus/content/repositories/myrepo-releases -Dfile=fleet-0.9.5.jar
mvn deploy:deploy-file -DgroupId=clj-http -DartifactId=clj-http -Dversion=0.4.1 -Dpackaging=jar -DrepositoryId=myrepo-releases -Durl=http://hostname/nexus/content/repositories/myrepo-releases -Dfile=clj-http-0.4.1.jar

How to deploy files to local repo

mvn install:install-file -DgroupId=clj-http -DartifactId=clj-http -Dversion=0.4.1 -Dpackaging=jar -Dfile=clj-http-0.4.1.jar

How to resume from with maven

mvn clean install -rf :my-last-module

How to generate a new jar project from commandline

mvn archetype:generate -DgroupId={project-packaging} -DartifactId={project-name} -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

Maven Archetypes

How to quickly create a Simple Java project?

Quick example:

mvn archetype:generate -B -DarchetypeGroupId=pl.org.miki -DarchetypeArtifactId=java8-quickstart-archetype -DarchetypeVersion=1.0.0 -DgroupId=net.matlux -DartifactId=java8-playpark -Dversion=1.0 -Dpackage=net.matlux -DcompilerMode=simple -DtestLibrary=junit

More general options:

mvn archetype:generate -B \
 -DarchetypeGroupId=pl.org.miki -DarchetypeArtifactId=java8-quickstart-archetype -DarchetypeVersion=1.0.0 \
 -DgroupId=com.example -DartifactId=project -Dversion=1.0 -Dpackage=com.example.project \
 -DcompilerMode=[simple, test-only, retrolambda-main, retrolambda-all] \ #optional
 -DtestLibrary=[junit, testng, none] #optional

Reference: https://github.com/mikolak-net/java8-quickstart-archetype