1. Good day to all Gathered a jar without dependencies, running the bat file with the java -cp maven.jar Main - everything works fine
  2. If I add intellij idea in JSOP project settings. In development environments, everything is working fine.

I have only one class:

 import java.io.File; import java.io.IOException; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; public class Main { public static void main(String[] args) throws IOException { int[] array = {2,5,4,7,8,12,3,4,5,31,1,12}; System.out.print("Privet "); Document doc = Jsoup.connect("http://google.com/").get(); String title = doc.title(); System.out.println(title); } }

Which in the development environment is absolutely normal, but after building in jar via the console it answers:

 java -cp maven.jar Main Privet Exception in thread "main" java.lang.NoClassDefFoundError: org/jsoup/Jsoup at Main.main(Main.java:14) Caused by: java.lang.ClassNotFoundException: org.jsoup.Jsoup at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 1 more

I can not understand for what reason it can not find the connected libraries, if everything works out perfectly in the development environment

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>asd</groupId> <artifactId>d</artifactId> <version>1.0-SNAPSHOT</version> </project>

1 answer 1

Your pom.xml should contain a dependency and a maven-assembly-plugin . 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>asd</groupId> <artifactId>d</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.jsoup</groupId> <artifactId>jsoup</artifactId> <version>1.7.2</version> </dependency> </dependencies> <build> <plugins> <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>3.0.0</version> <configuration> <descriptorRefs> <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> <archive> <manifest> <mainClass>Main</mainClass> </manifest> </archive> </configuration> <executions> <execution> <id>make-assembly</id> <phase>package</phase> <goals> <goal>single</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project>

Then run on the command line

 mvn clean package

The file d-1.0-SNAPSHOT-jar-with-dependencies.jar will appear in the target directory. It can be run from the command line.

 java -jar target/d-1.0-SNAPSHOT-jar-with-dependencies.jar
  • Recorded to pom - it did not help - Victor
  • Based on this article, spring-projects.ru/guides/maven, when filling in pom, all dependencies should roll themselves and calm down to the jar archive and this archive should become independent, do I understand correctly ?? - Victor
  • I updated pom and added how to compile / run correctly - Mikhail Vaysman
  • target / d-1.0-SNAPSHOT-jar-with-dependencies.jar — I don’t see this file - Victor
  • What did the mvn clean package command issue? - Mikhail Vaysman