I am using Maven to manage my dependencies and am trying to pull a few, proprietary, jar files from my project directory. (Yes, I know, I'm a crazy idiot who doesn't get the purpose of Maven and should never do this.) On compilation, I get the typical warnings about pointing to files in my project directory. However, the specified jar files are not placed in my .m2 directory, and thus, the project does not compile as dependencies are missing.
In pom.xml:
<dependency>
<groupId>org.sample</groupId>
<artifactId>sample</artifactId>
<scope>system</scope>
<version>2.0.3</version>
<systemPath>${project.basedir}/WebContent/WEB-INF/lib/my_file.jar</systemPath>
<type>jar</type
<optional>true</optional>
</dependency>
Question is, am I declaring my groupId and artifactId correctly? Is there a way to force Maven to use several, random, jar files in my project directory?
Thanks for the help.
You have to add the jar in your classpath as well for mvn to pickup your system dependencies.
<Class-Path>libs/my_file.jar</Class-Path>
Plugin Config
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven.jar.plugin.version}</version>
<configuration>
<archive>
<manifestEntries>
<Build-Jdk>${jdk.version}</Build-Jdk>
<Implementation-Title>${project.name}</Implementation-Title>
<Implementation-Version>${project.version}</Implementation-Version>
<Specification-Title>${project.name} Library</Specification-Title>
<Specification-Version>${project.version}</Specification-Version>
<Class-Path>libs/my_file.jar</Class-Path>
</manifestEntries>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>com.app.MainClass</mainClass>
<classpathPrefix>libs/</classpathPrefix>
</manifest>
</archive>
</configuration>
</plugin>
<repositories>
<repository>
<id>my-local-repo</id>
<url>file:///${project.parent.basedir}/dependencies/lib</url>
</repository>
</repositories>
regardless you can add maven plugin to copy the depdencies from m2
to the same directory with this plugin
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<phase>install</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<copyPom>true</copyPom>
<!-- <addParentPoms>true</addParentPoms>-->
<outputDirectory>${project.basedir}/../dependencies/lib/</outputDirectory>
<!-- <useSubDirectoryPerArtifact>true</useSubDirectoryPerArtifact>-->
<useRepositoryLayout>true</useRepositoryLayout>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.3.0</version>
<configuration>
<descriptors>
<descriptor>repository.xml</descriptor>
</descriptors>
</configuration>
</plugin>
Related
Currently I have a multi module project with maven, in the super pom I have added the modules of the projects. From the SparkAppBuilder module I intend to build the jar project that contains the SparkDriver and SparkProcess projects.
To do this from the SparkAPPBuilder module, add the maven-assembly-plugin plugin, I see that it builds the project by adding my 2 modules, but the problem is that it is generating the jar with all the dependencies that are in my local repository, so the jar weighs more than 150MB.
This is my SparkAppBuilderPOM:
<profile>
<id>dev</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5</version>
<executions>
<execution>
<id>assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>com.streaming.example.DirectStreaming</mainClass>
</manifest>
</archive>
<finalName>JavaStreamingDirect</finalName>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.1</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>com.streaming.example.DirectStreaming</mainClass>
</manifest>
</archive>
<finalName>JavaStreamingDirect</finalName>
</configuration>
</plugin>
</plugins>
</build>
</profile>
...
<dependencies>
<dependency>
<groupId>com.spark.driver</groupId>
<artifactId>SparkDriver</artifactId>
<version>0.0.2-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.spark.streaming</groupId>
<artifactId>SparkProcess</artifactId>
<version>0.0.2-SNAPSHOT</version>
</dependency>
</dependencies>
Do you know why you add my entire local repository in the assmbly phase?
Thanks so much.
Regards
A jar-with-dependencies also contains all transitive dependencies. Those are usually needed to run the project because they are the dependencies of your dependencies.
So it is not unusual that this jar is large. You should look in your mvn dependency:tree where most of the stuff comes from -- then you might be able to reduce the amount by changing the dependencies of your modules.
So: The jar-with-dependencies does not contain the whole local repository, just the whole dependency tree.
Let's say I'm adding the following dependency to my pom.xml:
<dependency>
<groupId>org.ini4j</groupId>
<artifactId>ini4j</artifactId>
<version>0.5.4</version>
</dependency>
I can now use the Ini class as expected, but if I try to build the jar and run it, it will give me a "noclassdeffounderror" error. When I check the content of the jar, it does not contain org/ini4j.
I was able to fix this by going into File -> Project Structure -> Artifacts
If I want to add another dependency, I'll have to do this every time, which is quite tedious (I didn't need to do this on NetBeans). I then tried to use the following plugins (which I used on NetBeans) to have Maven create a jar with dependencies automatically.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<manifest>
<mainClass>main.Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.7.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
On NetBeans, this automatically adds all dependencies to the jar file, but it doesn't do anything on IntelliJ IDEA. I have no idea what I'm doing anymore; nothing works. How can I make IntelliJ IDEA automatically extract a dependency into the output root?
Dose your intellij use the same version on maven that your Netbeans uses? if it checks fine, try another plugin for making a fat jar such as the folowing:
<build>
<plugins>
<!-- any other plugins -->
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
I am trying to setup a LWJGL project using Maven. I am using the example "getting started" source code from the official website.
This includes a few lines accessing LWJGL's manifest attributes, such as a simple version check:
System.out.println("Hello LWJGL " + Version.getVersion() + "!");
This runs without any problems in the Eclipse environment (of course after having built the project with Maven), but when running clean install and then running **-jar-with-dependencies.jar through cmd, the following exception get's thrown:
java.lang.NullPointerException
at org.lwjgl.system.APIUtil.apiGetManifestValue(APIUtil.java:97)
at org.lwjgl.Version.getVersion(Version.java:33)
at HelloWorld.run(HelloWorld.java:43)
at HelloWorld.main(HelloWorld.java:130)
This is because the Manifest object created by APIUtil does not include any attributes - but only in the built version by Maven.
Why is this? Is my pom.xml buggy, or is LWJGL 3.0.0 just not ready for this?
This is my pom.xml:
<properties>
<mainClass>HelloWorld</mainClass>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<finalName>${project.artifactId}-${project.version}.jar</finalName>
</properties>
<dependencies>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-platform</artifactId>
<version>3.0.0</version>
<classifier>natives-windows</classifier>
</dependency>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-platform</artifactId>
<version>3.0.0</version>
<classifier>natives-linux</classifier>
</dependency>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-platform</artifactId>
<version>3.0.0</version>
<classifier>natives-osx</classifier>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>${mainClass}</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
This errors happens because LWJGL 3.0.0 is looking inside the Manifest a property called "Implementation-Version", but when you made the uber-jar, this property was not set.
This is not really an issue with how you made the uber-jar: the Manifest that was created by maven-assembly-plugin looks like:
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Built-By: Me
Created-By: Apache Maven 3.3.9
Build-Jdk: 1.8.0_102
Main-Class: HelloWorld
You can see it inside META-INF/MANIFEST.MF of the jar-with-dependencies. This file does not have a "Implementation-Version" property. This is normal: when this executable JAR was created, all the MANIFEST of all dependencies were (rightfully) ignored, only to generate one containing the "Main-Class", just so that the JAR is executable.
The uber-jar cannot contain what is inside each of the dependencies manifest. For example, "Implementation-Version" is a property that is present in the manifest of multiple libraries, so which one should it keep? (There can be only one Manifest at the end, in the uber-jar). So the issue comes up because we're making an executable JAR, which can only have 1 Manifest so it cannot aggregate all the properties inside each of the dependencies manifest.
There are 2 possible solutions:
Ignore it. After all, this is not really an error.
Don't make an executable jar by embedding all the dependencies inside a single JAR, but create a ZIP assembly with each dependencies inside a lib folder: this way, each Manifest will be kept. This is done by telling the maven-jar-plugin to add a Manifest entry for the main class with the addition of the classpath and creating a custom assembly descriptor.
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<manifest>
<mainClass>${mainClass}</mainClass>
<addClasspath>true</addClasspath>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptors>
<descriptor>/path/to/assembly.xml</descriptor>
</descriptors>
</configuration>
</plugin>
where /path/to/assembly.xml is the path to the assembly descriptor, relative to the location of the POM, being:
<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.3"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.3 http://maven.apache.org/xsd/assembly-1.1.3.xsd">
<id>dist</id>
<formats>
<format>zip</format>
</formats>
<dependencySets>
<dependencySet>
<outputDirectory>lib</outputDirectory>
<useProjectArtifact>true</useProjectArtifact>
</dependencySet>
</dependencySets>
</assembly>
With such a configuration, running mvn clean install will create a ZIP file artifactId-version-dist.zip. Unpacking it and running (replacing <finalName> with the finalName of your JAR)
java -jar lib\<finalName>.jar
will print the version without any issues.
I have a java project done with Eclipse and Maven with this estructure folder:
enter image description here
Ok, when i make a Maven install to create the .jar take this structure folder:
enter image description here
So that the hierarchy is not the same and links to the images and css do not work.
I show you the code of pom.xml
enter code here
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
com.wepall
palle
0.4.0
com.thoughtworks.xstream
xstream
com.thoughtworks.xstream
xstream
1.4.9
palle
<!-- download source code in Eclipse, best practice -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<downloadSources>true</downloadSources>
<downloadJavadocs>false</downloadJavadocs>
</configuration>
</plugin>
<!-- Set a compiler level -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>${jdk.version}</source>
<target>${jdk.version}</target>
</configuration>
</plugin>
<!-- Maven Assembly Plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<configuration>
<!-- get all project dependencies -->
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<!-- MainClass in mainfest make a executable jar -->
<archive>
<manifest>
<mainClass>com.wepall.palle.MainApp</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<!-- bind to the packaging phase -->
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
Any ideas?
thanks a lot!!
Best regards
You should add a build section to your pom.xml:
<build>
<directory>${basedir}/target</directory>
<resources>
<resource>
<targetPath>${basedir}/target/resources</targetPath>
<directory>${basedir}/src/main/resources</directory>
</resource>
</resources>
</build>
Further Reference:
POM Reference (Build Section)
I think that you should create a war instead of a jar, because you are talking about css and images and jars should not contains that kind of files (see jar vs war).
In maven you only need to change the <packaging> of the project inside the POM.
I want to find a maven native (i.e. without calling external programs) to inject the svn revision in the war manifest.
Does anybody know a way to do that?
I found mention to how to add the subversion revision to manifests in jar files but not with war files.
I searched SO but could not find this issue specifically.
I want to find a maven native (i.e. without calling external programs) to inject the svn revision in the war manifest.
This is possible with the Build Number Maven Plugin using the svnjava provider:
If you need to execute the plugin on
machine without any svn in the path
you can configure the mojo to use the
svnjava provider.
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>buildnumber-maven-plugin</artifactId>
<version>1.0-beta-3</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>create</goal>
</goals>
</execution>
</executions>
<configuration>
<doCheck>true</doCheck>
<doUpdate>true</doUpdate>
<providerImplementations>
<svn>javasvn</svn>
</providerImplementations>
</configuration>
</plugin>
</plugins>
</build>
The Build Number Maven Plugin sets the build number in the ${buildNumber} property that you can then use in your POM.
I found mention to how to add the subversion revision to manifests in jar files but not with war files.
Then, to add the build number in the MANIFEST of a war, configure the plugin as mentioned in the Usage page:
<build>
...
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
</manifest>
<manifestEntries>
<Implementation-Build>${buildNumber}</Implementation-Build>
</manifestEntries>
</archive>
</configuration>
</plugin>
</plugins>
</build>
Try this. About halfway down, look for maven-war-plugin
<build>
...
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
</manifest>
<manifestEntries>
<Implementation-Build>${buildNumber}</Implementation-Build>
</manifestEntries>
</archive>
</configuration>
</plugin>
</plugins>
</build>