how to reference native DLL from Maven repo? - java

If a JAR is accompanied with a native DLL in Maven repo what do I need to put into my pom.xml to get that DLL into the packaging?
To be more specific take for example Jacob library. How do you make jacob-1.14.3-x64.dll go into the WEB-INF/lib folder after you run mvn package?
In our local Nexus repository we've got these definitions for JAR and DLL:
<dependency>
<groupId>net.sf.jacob-project</groupId>
<artifactId>jacob</artifactId>
<version>1.16-M2</version>
</dependency>
<dependency>
<groupId>net.sf.jacob-project</groupId>
<artifactId>jacob</artifactId>
<version>1.16-M2</version>
<classifier>x64</classifier>
<type>dll</type>
</dependency>
But putting the same dependencies to our project POM and running mvn package doesn't make DLL go to WEB-INF/lib, but JAR gets there fine.
What are we doing wrong?

Thanks to the hint from Monty0018 I was able to solve the problem. The maven code that works for me:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<excludeTransitive>true</excludeTransitive>
<includeArtifactIds>jacob</includeArtifactIds>
<failOnMissingClassifierArtifact>true</failOnMissingClassifierArtifact>
<silent>false</silent>
<outputDirectory>target/APPNAME/WEB-INF/lib</outputDirectory>
<overWriteReleases>true</overWriteReleases>
<overWriteSnapshots>true</overWriteSnapshots>
<overWriteIfNewer>true</overWriteIfNewer>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>

For a DLL, you will need to use the Copy Dependencies MOJO.
You can filter out all dependencies other than the DLL and specify anywhere in your project structure to copy them to, including your target/webapp/WEB-INF/lib.

Related

Libraries not included in javaFX jar

I have built a javaFX application using Maven.The problem is that the javaFX jar file generated from maven, doesn't contain dependencies included.
I have included the javaFx dependency this way :
<dependency>
<groupId>com.oracle</groupId>
<artifactId>javafx</artifactId>
<version>8.0.151</version>
<scope>system</scope>
<systemPath>C:\Program Files\Java\jdk1.8.0_151\jre\lib\ext\jfxrt.jar</systemPath>
</dependency>
I have also included the javaFx plugin :
<plugin>
<groupId>com.zenjava</groupId>
<artifactId>javafx-maven-plugin</artifactId>
<version>${javafx.plugin.version}</version>
<configuration>
<vendor>Vendor</vendor>
<mainClass>org.bsh.generator.App</mainClass>
<jarFileName>CSVGenerator</jarFileName>
</configuration>
<executions>
<execution>
<id>create-jfxjar</id>
<phase>package</phase>
<goals>
<goal>build-jar</goal>
</goals>
</execution>
</executions>
</plugin>
When I build the jar using goal "build-jar", the jar generated doesn't include other dependencies. Any help please?
Dependencies scoped as system are not respected, this is intentional. Only provided and runtime scoped dependencies/libraries are respected by the plugin.
Disclaimer: I'm the maintainer of the javafx-maven-plugin.

Spring Boot Maven Plugin - No BOOT-INF directory

Between version 1.3.8.RELEASE of the spring-boot-maven-plugin and version 1.4.0.RELEASE - there has been a change in the generated package structure (if you extract the uber jar file)
1.3.8.RELEASE com, lib, META-INF and org directories
1.4.0.RELEASE has a BOOT-INF, META-INF and org directories
Basically from 1.4.0.RELEASE onwards - all the classes and libs are in the BOOT-INF directory.
Due to this - when you try to run a Spring Boot project on Amazon Lambda - it says that there is a jar not found as it cannot read the new Spring Boot Uber jar structure
My question is - is it possible in the newer versions of the Spring Boot Maven Plugin to get it to generate the uber jar to be the same structure as in version 1.3.9.RELEASE?
I tried the maven-shade-plugin - but that leads to other issues
Any help is greatly appreciated
Thanks
Damien
The solution was to add the MODULE layout for the plugin in the pom.xml file
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<layout>MODULE</layout>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
In my case I'm using spring boot 2.X and I declared the spring-boot-maven-plugin after the maven-dependency-plugin (which I used to unpack and create exploded app in Docker) and it must be before the unpack, makes sense, it was unpacking before the spring boot maven plugin executed. Next time I'll declare it first thing in the plugin chain, lost more than 1 hour on this. Hope it helps someone.
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>${spring.boot.mainClass}</mainClass>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>unpack</id>
<phase>package</phase>
<goals>
<goal>unpack</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>${project.groupId}</groupId>
<artifactId>${project.artifactId}</artifactId>
<version>${project.version}</version>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
The answer above with
<layout>MODULE</layout>
does not work anymore, this is because layout element is deprecated in Spring Boot 2.x.
I am using Spring Boot 2.0.x, I found this helpful comment on github:
Support for the module layout was removed in Spring Boot 2.0 having been deprecated in 1.5. Unfortunately, the updates to the Maven Plugin's documentation were missed so we can use this issue to sort that out. You should use a custom LayoutFactory instead.
But as I did not want to implement LayoutFactory I tried this second solution below that actually repackage and creates an extra jar with a classifier given name:
This is due to the change in layout of executable jars in Spring Boot 1.4. Application classes are now packaging in BOOT-INF/classes.
Your client module depends on the repackaged, fat jar of your web module. Due to the new layout that means that the client module can no longer load the web module's classes. If you want to use your web module as a dependency, you should configure Boot's repackaging to apply a classifier to the fat jar. For example:
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
Doing so will allow other modules to depend on the original jar that does not embed the module's dependencies and has the classes at the root of the jar.
One original jar have the same structure as I wanted like
com.my-package.foo.bar
META-INF
and the second classifier have the newer structure with BOOT-INF/ etc.
For me, the solution was a bit more insidious....I had the spring-boot-maven-plugin nested under pluginManagement, (see below). Doh!
The nasty thing, is that when I'd run mvn spring-boot:run, spring boot comes up just fine, and runs app! It wasn't until we tried to deploy to PCF (as a spring-boot JAR), that we'd get an error that there was something wrong with format of the binary....
<build>
<!--
DON'T DO THIS!!
-->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring.boot.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
<goal>build-info</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
<!--
DO THIS INSTEAD!!
-->
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring.boot.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
<goal>build-info</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
Once I removed the pluginManagement tags from the POM, I would now get the ./BOOT-INF structure. Please keep in mind that pluginManagement is typically for a parent-pom structure, where you want that plugin's config used across other modules.
I was using Gradle, instead of Maven, and this is what I had to do:
1- In my build.gradle, I added the following properties as defined in https://spring.io/guides/gs/spring-boot-Docker/.
buildscript {
...
dependencies {
...
classpath('gradle.plugin.com.palantir.gradle.docker:gradle-docker:0.13.0')
}
}
group = 'springio'
...
apply plugin: 'com.palantir.docker'
task unpack(type: Copy) {
dependsOn bootJar
from(zipTree(tasks.bootJar.outputs.files.singleFile))
into("build/dependency")
}
docker {
name "${project.group}/${bootJar.baseName}"
copySpec.from(tasks.unpack.outputs).into("dependency")
buildArgs(['DEPENDENCY': "dependency"])
}
2- My dependency folder was not being written to
ARG DEPENDENCY=target/dependency
instead, I located it in another folder, so I changed this property in the Dockerfile:
ARG DEPENDENCY=build/dependency
With this I got a successful build.

Maven - how to rebuild a git revision number module on any module's build

I'm kinda new to maven and have encountered a problem that I can't solve on my own.
I've written a simple module to a big project that tracks git revision number, adds a timestamp and dumps these properties to a .properties file. This project is just a pom.xml file, no java classes, and one project.properties file. I wanted to add this module as a dependency to the main project pom.xml file, but it is rebuild only once (since Maven doesn't detect any changes it doesn't rebuild it again).
How do I force rebuild of this module everytime any module of the project is rebuilt? Can I do this in the project pom.xml file, or do I somehow set this in Jenkins? Or maybe I've approached this problem in a completely wrong way?
Here's the fragment of my pom.xml file:
<build>
<plugins>
<!-- enable ${timestamp} variable -->
<plugin>
<groupId>com.keyboardsamurais.maven</groupId>
<artifactId>maven-timestamp-plugin</artifactId>
<version>1.0</version>
<configuration>
<propertyName>timestamp</propertyName>
<timestampPattern>dd.MM.yyyy HH:mm</timestampPattern>
</configuration>
<executions>
<execution>
<goals>
<goal>create</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- enable JGit plugin -->
<plugin>
<groupId>ru.concerteza.buildnumber</groupId>
<artifactId>maven-jgit-buildnumber-plugin</artifactId>
<version>1.2.7</version>
<executions>
<execution>
<id>git-buildnumber</id>
<goals>
<goal>extract-buildnumber</goal>
</goals>
<phase>initialize</phase>
</execution>
</executions>
</plugin>
<!-- write project properties to file -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>properties-maven-plugin</artifactId>
<version>1.0-alpha-2</version>
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>write-project-properties</goal>
</goals>
<configuration>
<outputFile>${basedir}/target/classes/project.properties</outputFile>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
Cheers,
Jony
Okay, problem solved (thanks to deng from #maven on irc.codehaus.org). Right now i have the main pom and two modules: version-tracker and common. In the main pom I make a dependency on version-tracker, and in the common module's pom I add main pom as a parent (therefore common inherits dependency on version-tracker).
At this stage I run mvn clean package -pl :common -am and my project.properties file is updated every time. Thanks, deng :)
I still have some other problems, but this one is solved :)

Maven dependencies not being compiled

I have been trying for the last hour or so to get my Maven project to include source files from its dependencies, but for some reason, it isn't. I have followed the steps provided by the following link, but when I compile and run the plugin, I get a ClassNotFoundException:
https://github.com/mkremins/fanciful
I have made sure to include the dependencies and the repository from the link above into my pom.xml file, but when I compile, they don't get added to my .jar file.
I am fairly new to using Maven, and like it so far, albeit that it can be a pain to solve issues like this.
I am building the project by doing the following:
Right click project -> Run As -> Maven Build -> Goal: clean install
EDIT -
With a little more searching around, I figured it wasn't as easy as I thought so. I added the following to my pom.xml build section:
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
<minimizeJar>true</minimizeJar>
<artifactSet>
<includes>
<include>mkremins:fanciful</include>
<include>org.json:json</include>
</includes>
</artifactSet>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
The only problem with this is that I needed to also manually include the dependencies of the main library I wanted to use - mkremins:fanciful; is there flag or option to automatically copy dependencies from the one file I need, rather than also including <include>org.json:json</include>?
Well, if you want to have your dependencies copied to your target jar, you need to tell maven to do so! Maven doesn't know if the artifact of your project is meant to be self-sufficient executable jar, jar to be executed inside a container or just a dependency or library for another project.
You might want to use copy-dependencies task from maven-dependency-plugin
For example:
<build>
<plugins>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<includeScope>runtime</includeScope>
<outputDirectory>${project.build.directory}</outputDirectory>
<excludeTransitive>false</excludeTransitive>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
For more tweaking you might also want to play with jar plugin and assembly plugin. On more about creating executable jars:
http://www.ibm.com/developerworks/java/library/j-5things13/index.html?ca=dat-
You have mistaken the idea of Maven. Maven is intended to use dependencies which are located in Maven Central. It's idea is not to compile dependencies. I recommend you to read about Maven and learn how it works.

How to include my *.jasper files together with *.class files in maven build?

I have a web project that was compiled by ANT. The *.jasper files were compiled with the *.class files. Once migrated to MAVEN they ceased to be integrated with the build.
I tried to include these file using the resource maven tag, but it seems that only include files that are in the resource. How do I tell maven to put them together (in the same folder) with the *.class?
You'll need a maven plugin for Jasper. I haven't used this myself but this should be exactly what you need
https://github.com/alexnederlof/Jasper-report-maven-plugin
Follow the usage instructions
<build>
<plugins>
<plugin>
<groupId>com.alexnederlof</groupId>
<artifactId>jasperreports-plugin</artifactId>
<version>1.6</version>
<executions>
<execution>
<phase>process-sources</phase>
<goals>
<goal>jasper</goal>
</goals>
</execution>
</executions>
<configuration>
<outputDirectory>${project.build.directory}/jasper</outputDirectory>
</configuration>
</plugin>
</plugins>
And you should be good!
Update
Sounds like you have some config needs, to change your source directory
<configuration>
<sources>
<source>src/main/java/</source>
</sources>
<outputDirectory>(same as your java output)</outputDirectory>
</configuration>
I believe this will help you out!
I found the solution in this link: https://bowerstudios.com/node/976
In configuration tag, i put the tag:
<sourceDirectory>src/main</sourceDirectory>
And works fine!
Thanks a lot

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