Build one JAR for Spring app

Usually you can use maven-assembly-plugin to build one JAR file with all dependencies (JAR files which your project depends on). But this plug-in does not work for Spring bases applications. So you should use onejar-maven-plugin instead. Use it in the <build> phase like this:

<plugin>
    <groupId>com.jolira</groupId>
    <artifactId>onejar-maven-plugin</artifactId>
    <version>1.4.4</version>
    <executions>
       <execution>
           <configuration>
                <mainClass>com.your.package.main.Main</mainClass>
                <!-- Optional, default is false -->
                <attachToBuild>true</attachToBuild>
                <!-- Optional, default is "one jar" -->
                 <classifier>onejar</classifier>
           </configuration>
           <goals>
                   <goal>one-jar</goal>
          </goals>
       </execution>
    </executions>
</plugin>