Unpack jar contents after creating it in maven - maven

I have this plugin in my pom.xml that creates a jar file and place it somewhere :
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<outputDirectory>${basedir}/../../web/src/main/docroot/WEB-INF/lib</outputDirectory>
</configuration>
</plugin>
I want to extract this jar into some directory after creating it. How can I do that ?

I found this solution and it works for me: :)
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>unpack</id>
<phase>prepare-package</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>ir.nsdp.satra</groupId>
<artifactId>Shapeloader</artifactId>
<version>1.0</version>
<type>jar</type>
<excludes>META-INF/**</excludes>
<outputDirectory>${basedir}/../../../web/src/main/docroot/WEB-INF/classes</outputDirectory>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>

Related

How to rename a file while unpacking an artifact with maven-dependency-plugin?

I'm using a maven-dependency-plugin to unpack a jar that contains several .sh scripts and that works as expected.
So I'm able to copy the files into the <outputDirectory>${project.build.dir}/main-scripts</outputDirectory>
But now I want to rename only one of them from run.sh to run-main.sh while unpacking. How could it be achieved with the dependency plugin?
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>unpack</id>
<phase>generate-sources</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>com.main.libs</groupId>
<artifactId>main-scripts</artifactId>
<version>LATEST</version>
<type>jar</type>
<includes>*.sh</includes>
<outputDirectory>${project.build.dir}/main-scripts</outputDirectory>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>

Super pom and plugins

According to this book I am reading, in my super pom I must find the following code :
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
<executions>
<execution>
<id>default-clean</id>
<phase>clean</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>
While in my super pom I find no goals or anything specified, like so :
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.2</version>
</plugin>
The only plugin which was specified is the dependency plugin. The goal was set to copy:
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>/home/hp-pc/test_maven/project/target/endorsed</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
Can you explain why I find this difference and what's "copy" defined in the goal ?

Build maven jar from classes no java source

I want to build a maven jar artifact from classes. I don't have source files. These classes are originally in another artifact installed locally. I use maven-dependency-plugin to unpack the classes and put them in the target folder for this project/module.
It creates the jar.. but doesn't include the classes I just unpacked. Here's my pom:
<build>
...
<!-- unpack myjar1.jar and myjar2.jar -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.8</version>
<executions>
<execution>
<id>unpack</id>
<phase>package</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>com.company</groupId>
<artifactId>myjar1</artifactId>
<version>1.0</version>
<type>jar</type>
<overWrite>false</overWrite>
<outputDirectory>target/final</outputDirectory>
</artifactItem>
<artifactItem>
<groupId>com.company</groupId>
<artifactId>myjar2</artifactId>
<version>1.0</version>
<type>jar</type>
<overWrite>false</overWrite>
<outputDirectory>target/final</outputDirectory>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>default</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classesDirectory>/path/to/target/final/folder</classesDirectory>
<includes>
<include>**</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
How can I include these classes into my final.jar?
I think the best solution is the maven-shade-plugin: create a pom.xml, add those 2 libraries as dependencies and configure the maven-shade-plugin.
Run mvn package and you have your merged project.
What Robert wrote above might be a workable solution too.. but I figured a different way out. I simply removed <includes> inside the maven-jar-plugin and it worked. I ran the build in eclipse by creating a build configuration and chose "debug" option. It spit out a lot of info about "configuration" which is otherwise not displayed.
Thanks!
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>default</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classesDirectory>path/to/final/folder</classesDirectory>
</configuration>
</execution>
</executions>
</plugin>
This worked!
Another approach is to set ouputDirectory to regular target/classes directory.
target/classes
So that unpacked classes plus your project classes will be avaialble in target/classes which can be bundled in to .jar using regular maven-jar-plugin by specifing **
Complete pom:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.8</version>
<executions>
<execution>
<id>unpack</id>
<phase>package</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>a.b.c</groupId>
<artifactId>aaa</artifactId>
<type>jar</type>
<overWrite>true</overWrite>
<outputDirectory>target/classes</outputDirectory>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>default</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<includes>
<include>**</include>
</includes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>

unpack dependency and repack classes using maven?

I am trying to unpack a maven artifact A and repack it into a new jar file in the maven project B.
Unpacking class files from artifact A into:
<my.classes.folder>${project.build.directory}/staging</my.classes.folder>
works fine using this:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>unpack</id>
<phase>generate-resources</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>com.test</groupId>
<artifactId>mvn-sample</artifactId>
<version>1.0.0-SNAPSHOT</version>
<type>jar</type>
<overWrite>true</overWrite>
<outputDirectory>${my.classes.folder}</outputDirectory>
<includes>**/*.class,**/*.xml</includes>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
In the same pom I now want to generate an additional jar containing the classes just unpacked:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classesdirectory>${my.classes.folder}</classesdirectory>
<classifier>sample</classifier>
</configuration>
</execution>
</executions>
</plugin>
A new jar is created but it does not contain the classes from the:
${my.classes.folder}
its simply a copy of the default project jar. Any ideas?
I have tried to follow this guide:
http://jkrishnaraotech.blogspot.dk/2011/06/unpack-remove-some-classes-and-repack.html
but its not working.
I would suggest you to use the maven-shade-plugin instead.
That will make the unpack-repack in the same invocation.
You could do something like this for example:
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.0</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<artifact>com.test:mvn-sample:1.0.0-SNAPSHOT</artifact>
<includes>
<include>**/*.class</include>
<include>**/*.xml</include>
</includes>
</filter>
</filters>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
In the sample you have <classesdirectory>, the docs have the element as <classesDirectory>. Case sensitivity matters, I think.

How can I untar an artifact in maven?

How do I untar an artifact to use to compile my source?
Do I need to copy the tar file before untarring it?
I have something like below...
<build>
<plugins>
<plugin>
<artifactId>abcId</artifactId>
<version>1</version>
<executions>
<execution>
<id>abc untar</id>
<phase>process-resources</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<executable>tar</executable>
<workingDirectory>???</workingDirectory>
<arguments>
<argument>xvf abc.tar</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
You can untar an artifact by using dependency:unpack goal of maven dependency plugin. Here is a modified version of the example.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.4</version>
<executions>
<execution>
<id>unpack</id>
<phase>process-resources</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>artifact-groupId</groupId>
<artifactId>the-artifact</artifactId>
<version>a.b</version>
<type>tar</type>
<outputDirectory>${project.build.directory}/artifactLocation</outputDirectory>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>

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