Maven cheatsheet

Just a place for me to store handy bits and pieces. Having not used it for awhile to remind of things, I’ll likely to forget !

How to compile to different versions of Java ( see also https://mkyong.com/maven/maven-error-invalid-target-release-1-11/ )

			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.8.1</version>
				<configuration>
					<source>11</source>
					<target>11</target>
				</configuration>
			</plugin>

In the <build> section

How to change the output/target dir

Handy if you want to drop a war straight into tomcat deploy directory for example.

In the <build> section

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-war-plugin</artifactId>
				<version>2.0</version>
				<configuration>
					<outputDirectory>/Users/someuser/mydockerdir/java_tomcat/built_war_files/</outputDirectory>
				</configuration>
			</plugin>

 

Change the name of war file thats outputed 

In the <build> section

<finalName>SpanishGames</finalName>

 

An full example that does the 3 things above (in a web app using JavaEE not Spring):

<project xmlns="http://maven.apache.org/POM/4.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>greenbox.spanish</groupId>
	<artifactId>SpanishGames</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>SpanishGames Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
		</dependency>

	</dependencies>
	<build>
		<finalName>SpanishGames</finalName>

		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.8.1</version>
				<configuration>
					<source>11</source>
					<target>11</target>
				</configuration>
			</plugin>

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-war-plugin</artifactId>
				<version>2.0</version>
				<configuration>
					<outputDirectory>/Users/bob/docker/java_tomcat/built_war_files/</outputDirectory>
				</configuration>
			</plugin>


		</plugins>

	</build>
</project>