Spring Boot Executable Jar File Without Dependencies - spring-boot

Question

What is the easiest way to build spring boot jar file without its dependencies?
Basically I should be able to keep dependency jar files in a separate folder.
Currently I'm using spring boot maven plugin, however, it creates a Fat jar file with all dependencies.

Answer 1

Just do not use spring-boot-maven-plugin at all and use JAR packaging. This way the build wouldn't package dependencies into the JAR.

Answer 2

spring-boot-maven-plugin has option for repackaging that puts dependencies inside (making uber jar)
You can disable repackaging or make repackaged .jar go with other classifier [2]
http://docs.spring.io/spring-boot/docs/current/reference/html/build-tool-plugins-maven-plugin.html
http://docs.spring.io/spring-boot/docs/current/maven-plugin/examples/repackage-classifier.html

Answer 3

Below is a solution I found on How to Create an Executable JAR with Maven,
You just need to put these in your 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>
<outputDirectory>
${project.build.directory}/libs
</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>libs/</classpathPrefix>
<mainClass>
org.baeldung.executable.ExecutableMavenJar
</mainClass>
</manifest>
</archive>
</configuration>
</plugin>

Answer 4

Replace change your build entry in pom.xml to
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.1.1</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/dependency_jar</outputDirectory>
<overWriteReleases>false</overWriteReleases>
<overWriteSnapshots>false</overWriteSnapshots>
<overWriteIfNewer>true</overWriteIfNewer>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
In the target folder there will be a dependency_jar folder with all the dependency jars, along with "project_name.jar"(fat jar) and "project_name.jar.original"(jar file of your code)