Combine multiple jar into one (using maven) - java

I have a project in javafx , I have 3 dependencies I try to combine them with my principale jar using maven :
The result I got a jar (1.82mb) but when I click he dosen't launch noting appears.
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<dependencies>
<dependency>
<groupId>org.scilab.forge</groupId>
<artifactId>jlatexmath</artifactId>
<version>1.0.2</version>
</dependency>
<dependency>
<groupId>org.jfree</groupId>
<artifactId>fxgraphics2d</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.controlsfx</groupId>
<artifactId>controlsfx</artifactId>
<version>8.0.6_20</version>
</dependency>
</dependencies>
<groupId>groupId</groupId>
<artifactId>FXCalc</artifactId>
<version>1.0-SNAPSHOT</version>
</project>
and this is some screenshot :
The problem : the jar file I got dosen't work , it dosen't want to launch , I tried using ant and gradle but I don't know how to use them.
EDIT : After trying the solution I get a jar but it still dosen't launch and I have no error.
EDIT 2 :
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<dependencies>
<dependency>
<groupId>org.jfree</groupId>
<artifactId>fxgraphics2d</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.scilab.forge</groupId>
<artifactId>jlatexmath</artifactId>
<version>1.0.2</version>
</dependency>
<dependency>
<groupId>org.controlsfx</groupId>
<artifactId>controlsfx</artifactId>
<version>8.0.6</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>sample.Main</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<groupId>groupId</groupId>
<artifactId>CalculatorFX</artifactId>
<version>1.0-SNAPSHOT</version>
</project>


Add the following plugin to your pom.xml after dependencies:
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>sampler.Main</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
Then run the mvn package command from your base directory, where your project is. This will generate a single jar in the target folder.

Related

Maven - Invalid signature file digest for Manifest main attributes

New to java and Maven.
When trying to add dependancy to the package pulsar-functions-local-runner I am getting an error:
Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5:assembly (make-assembly) on project java-function: Execution make-assembly of goal org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5:assembly failed: Invalid signature file digest for Manifest main attributes
Using maven 3.6.3.
I am after 3 hours of searching the web, what am I missing?
This is my pom.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>java-function</groupId>
<artifactId>java-function</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-functions-api</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-functions-local-runner</artifactId>
<version>2.7.0</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<appendAssemblyId>false</appendAssemblyId>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>org.example.test.ExclamationFunction</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>assembly</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

Well i guess they made some change in the jar of 2.7.0 because changing to pulsar-functions-local-runner 2.6.0 solve the issue

Remove pulsar-client from maven, and add pulsar-common. pulsar-common has the pulsar-client-api. There is a serious conflict between pulsar-client and pulsar-common.
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-common</artifactId>
<version>${pulsar.version}</version>
</dependency>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-functions-api</artifactId>
<version>${pulsar.version}</version>
</dependency>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-functions-local-runner</artifactId>
<version>${pulsar.version}</version>
</dependency>
<!-- <dependency>-->
<!-- <groupId>org.apache.pulsar</groupId>-->
<!-- <artifactId>pulsar-client</artifactId>-->
<!-- <version>${pulsar.version}</version>-->
<!-- </dependency>-->

How to fix "JAR will be empty - no content was marked for inclusion!" maven-jar-plugin?

When I run maven-jar-plugin, jar:jar i have this warning and empty jar-file
[WARNING] JAR will be empty - no content was marked for inclusion!
The build is successful but the produced jar-file is empty as the warning says.
How can I fix it? Im trying to find solution in ither questions, but all solutions not working
Here is my pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.actticus.instdbparse</groupId>
<artifactId>instDBParse</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.github.igor-suhorukov</groupId>
<artifactId>instagramscraper</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>org.brunocvcunha.instagram4j</groupId>
<artifactId>instagram4j</artifactId>
<version>1.8</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.14</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<archive>
<index>true</index>
<manifest>
<mainClass>com.actticus.instdbparse.Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<configuration>
<cleanupDaemonThreads>false</cleanupDaemonThreads>
<classpathScope>test</classpathScope>
<mainClass>Main</mainClass>
</configuration>
<executions>
<execution>
<id>run-selenium</id>
<phase>integration-test</phase>
<goals><goal>java</goal></goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

Don't run mvn jar:jar, but mvn clean package. The jar:jar goal just packages - without the lifecycle, there is nothing to package.
Look up "Maven lifecycle" to get more background information.

Error: Could not find or load main class. Running maven jar-with-dependencies

I am using Maven to manage a personal project and am getting this maven error whenever I try to run my jar with dependencies.
$ java -jar .\SpotifyAutomation-1.0-SNAPSHOT-jar-with-dependencies.jar
Error: Could not find or load main class SpotifyRunner
(I do a clean and install before running).
My pom file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SpotifyAutomation</groupId>
<artifactId>SpotifyAutomation</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<build>
<plugins>
<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>
<addClasspath>true</addClasspath>
<classpathPrefix>lib</classpathPrefix>
<mainClass>SpotifyRunner</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-server</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>se.michaelthelin.spotify</groupId>
<artifactId>spotify-web-api-java</artifactId>
<version>1.5.0</version>
</dependency>
</dependencies>
Any insight on how I might go about fixing this? I have tried switching around my classpathPrefix but to no avail. My project has one module and one package.
My project structure is shown in the below image:
Project Structure

Java Maven Clean and Build With Dependencies

im still new in java maven and dependencies. can i ask?
I create some project about QR code Generator with using Java Maven.
When I run my project into Netbeans, using qrgen-1.2.jar, core-2.0.jar and javase-2.0.jar. IT CAN GENERATE ANY QR CODE THAT I WANT.
But when i try to Build and Clean, it CANNOT generate my QR code in my Document/NetbeansProjects/QRcode/target/QRcode-1.0-SNAPSHOT.JR
Here my pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>QRcode</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<mainClass>com.mycompany.qrcode.QRcode</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.glxn</groupId>
<artifactId>qrgen</artifactId>
<version>1.2</version>
</dependency>
</dependencies>

Based on your POM, you aren't packaging your dependencies in the executable jar being generated. This is causing your program to fail when you run it outside of the IDE.
Here's an example of how to use the Maven Assembly plugin to create an executable jar that includes your dependencies:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<archive>
<manifest>
<mainClass>com.mycompany.qrcode.QRcode</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</execution>
</executions>
</plugin>
The output of mvn package will now include target/QRcode-1.0-SNAPSHOT-jar-with-dependencies.jar, which you can see includes the classes specified by your build dependencies.
Here's a link to the documentation for the plugin.

Java on Heroku can't find Main.class

I am trying to get a very simple Spark app running on Heroku. It runs fine locally. I suspect it's some subtle Maven problem because I've used some Maven scripts from Heroku that I don't quite understand.
Here's my pom.xml:
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SparkDemo</groupId>
<artifactId>SparkDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<!-- This tells Maven to include all dependencies -->
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>com.heroku.sdk</groupId>
<artifactId>heroku-maven-plugin</artifactId>
<version>0.4.4</version>
<configuration>
<jdkVersion>1.8</jdkVersion>
<!-- Use your own application name -->
<appName>still-journey-10861</appName>
<processTypes>
<!-- Tell Heroku how to launch your application -->
<!-- You might have to remove the ./ in front -->
<web>java -jar target/SparkDemo-0.0.1-SNAPSHOT-jar-with-dependencies.jar</web>
</processTypes>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.sparkjava</groupId>
<artifactId>spark-core</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>com.j2html</groupId>
<artifactId>j2html</artifactId>
<version>0.5.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-csv</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
</project>
When I look inside the Jar on Heroku, I see the relevant class right there:
~ $ jar tf target/SparkDemo-0.0.1-SNAPSHOT.jar
META-INF/
META-INF/MANIFEST.MF
edu/
edu/brandeis/
edu/brandeis/cosi12b/
edu/brandeis/cosi12b/sparkdemo/
edu/brandeis/cosi12b/sparkdemo/Main.class
edu/brandeis/cosi12b/sparkdemo/StudentChooserServer.class
edu/brandeis/cosi12b/sparkdemo/StudentDirectory.class
edu/brandeis/cosi12b/sparkdemo/StudentInfo.class
studentnames.csv
META-INF/maven/
META-INF/maven/SparkDemo/
META-INF/maven/SparkDemo/SparkDemo/
META-INF/maven/SparkDemo/SparkDemo/pom.xml
META-INF/maven/SparkDemo/SparkDemo/pom.properties

The class name should be complete, with the package too. So instead of <mainClass>Main</mainClass> it should be <mainClass>edu.brandeis.cosi12b.sparkdemo.Main</mainClass>.

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