Develop Reference

Setting VM argument via pom.xml

I need to set -Duser.language via pom.xml since I need language specific database queries.
When I pass -Duser.language=tr to VM options upon running spring boot application on Intellij, it works. But I need this to be done in pom.xml for profiling.
Below ways are not working. Language is not set.
<profile>
<properties>
<argLine>-Duser.language=tr -Duser.region=TR</argLine>
</properties>
...
</profile>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<verbose>true</verbose>
<fork>true</fork>
<compilerArgs>
<arg>-J-Duser.language=tr_TR</arg>
</compilerArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.2</version>
<configuration>
<argLine>-Duser.language=tr -Duser.region=TR</argLine>
<systemPropertyVariables>
<user.language>tr</user.language>
<user.region>TR</user.region>
</systemPropertyVariables>
</configuration>
</plugin>
Only this is working but I need to run application with mvn spring-boot:run for this to work and that is not an option.
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<jvmArguments>
-Duser.language=tr
</jvmArguments>
</configuration>
...
</plugin>
How can I pass vm arguments via pom.xml?

Why no test is run when execute mvn test -P{profile Id}

I have defined my profiles in pom.xml as below:
<profiles>
<profile>
<id>Test123</id>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<!-- put your configurations here -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>src/target/testdemo.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</profile>
</profiles>
And we I ran a command mvn test -PTest123, there is no Tests being run as shown as below:
cmd output
However, we I ran with command mvn test, it has ran the test as shown as below:
cmd output

After reviewing the output files I noticed that different versions of the maven-compiler-plugin and maven-surefire-plugin are running per profile. Is this project dependent on a parent pom.xml? Otherwise changing the versions on the plugins to:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<!-- put your configurations here -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12.4</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>src/target/testdemo.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
</plugin>
should fix the problem in case the versioning is not important.

maven surefire plugin is not executing runners in parallel

I have set up maven-surefire-plugin in POM.xml.
Ideally as per the help I got over the internet for using these plugin, my set up should run cucumber Runner files in parallel but they are always getting executed sequentially.
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<fork>true</fork>
<executable>C:\Program Files\Java\jdk1.8.0_201\bin\javac.exe</executable>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20</version>
<configuration>
<parallel>classes</parallel>
<forkMode>perthread</forkMode>
<threadCount>2</threadCount>
<argLine>-Xmx1024m -XX:MaxPermSize=256m</argLine>
<includes>
<include>**/*Runner.java</include>
</includes>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>

changing java source compiler in maven

I am using spring-boot-maven-plugin to maven compile my source code as I want maven dependency jars to be part of my jar. (suggested by someone). I have written code according to java 1.7 but maven compiler is trying to compile it with 1.5 (default for maven). To change it I defined source as 1.7 but it is still compiling it with 1.5 Here is my pom.xml example.
<build>
<sourceDirectory>src</sourceDirectory>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.5.2.RELEASE</version>
<configuration>
<finalName>BAU_Report</finalName>
<source>1.7</source>
<target>1.7</target>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>com.bau.report.MainClass</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>

You should use maven compiler plugin
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
Add this to build -> plugins section.

If you’re using the spring boot parent pom you can use this property shortcut instead in your pom.xml
<properties>
<java.version>7</java.version>
</properties>

Add org.apache.maven.plugins for the pom.xml file.
<build>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</build>
Maven properties for the compiler version can be set as following.
Method 1
<properties>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Method 2
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>

Maven multi-module project site with javadocs

I would like use Maven for creating site for my application. This is a multi-module app, the parent module is simple site module, and first child is a core of app, the second is a GUI (Swing).
I now use follow for parent pom.xml
<modules>
<module>core</module>
<module>kayako-desktop</module>
</modules>
<build>
<plugins>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>2.2</version>
<configuration>
<locales>en</locales>
</configuration>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<phase>install</phase>
<goals>
<goal>aggregate</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.7</version>
<configuration>
<aggregate>true</aggregate>
</configuration>
</plugin>
<plugin>
<artifactId>maven-changes-plugin</artifactId>
<version>2.4</version>
</plugin>
</plugins>
</reporting>
My core's pom:
<build>
<plugins>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<phase>package</phase>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
<goal>javadoc</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.7</version>
<configuration>
<links>
<link>http://download.oracle.com/javase/6/docs/api/</link>
</links>
</configuration>
</plugin>
</plugins>
</reporting>
(I stripped out unrelated parts from both)
The problem: I tried mvn site:stage, but javadoc is not collected from core module. What do I wrong?

Configure the javadoc plugin in the <reportPlugins> section of the configuration for the maven-site-plugin, in the parent pom.
Here's what worked for me.
In the parent pom:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.3</version>
<configuration>
<reportPlugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9</version>
<reportSets>
<reportSet>
<id>aggregate</id>
<reports>
<report>aggregate</report>
</reports>
</reportSet>
</reportSets>
<configuration>
<!-- Here you can add special configurations for your javadoc, if needed -->
</configuration>
</plugin>
<!-- Here you can also configure more report plugins -->
<!-- for your site, such as maven-project-info-reports-plugin -->
</reportPlugins>
</configuration>
</plugin>
<!-- ... -->
</plugins>
</build>
<!-- ... -->
<distributionManagement>
<site>
<id>website</id>
<url>http://site.url/can/be/tentative/or/hypothetical</url>
</site>
</distributionManagement>
In each of the child poms, you can also configure specific reports for the site plugin, for example, surefire test reports or project info. However, you shouldn't need to place any javadoc plugin configurations there (unless you also want non-aggregated javadocs for your child modules).
You should then be able to do mvn site site:stage from the parent directory. To view your aggregated javadocs, point your browser to target/staging/index.html in that directory, and click "Project Reports" and then "JavaDocs" in the index on the left-hand side of the page.
Additional tip:
Sometimes I want to look quickly at the aggregated javadocs without having to do an entire site site:stage, which does more stuff and takes longer. So I also include a configuration for the maven-javadoc-plugin directly in the <plugin> section of the parent pom. That way, I can run mvn javadoc:aggregate and quickly get the aggregated javadocs in target/site/apidocs/index.html.