copying the content of one jar into another jar in maven

Question

I have created war packing of my project and on same pom.xml file, I have included below plugin to create the jar as well. Everything work fine, it creates jar and war file both.

<plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <executions>
            <execution>
                <id>make-a-jar</id>
                <phase>compile</phase>
                <goals>
                    <goal>jar</goal>
                </goals>
            </execution>
        </executions>
    </plugin>

Now my question is, how I can merge the two jars? I want to include the content of one jar into the jar created above. Means copying the content of one jar into other while creating other jar in maven.

What do you mean merge the two jars? You say you have only one jar, and a war. Do you perhaps want to include the jar inside the WEB-INF/lib of the war? — Gimby, Sep 01 '15 at 14:52
possible duplicate of [Is it possible to create an "uber" jar containing the project classes and the project dependencies as jars with a custom manifest file?](http://stackoverflow.com/questions/1832853/is-it-possible-to-create-an-uber-jar-containing-the-project-classes-and-the-pr) — Derrops, Sep 01 '15 at 14:55

score -1 · Accepted Answer · answered Sep 08 '15 at 13:12

This solved my issue,

<plugin>
     <groupId>org.apache.maven.plugins</groupId>
     <artifactId>maven-dependency-plugin</artifactId>
     <executions>
       <execution>
         <id>${project.artifactId}</id>
         <phase>generate-sources</phase>
         <goals>
           <goal>unpack</goal>
         </goals>
         <configuration>
           <artifactItems>
             <artifactItem>
               <groupId>groupId_for_jar_to_copy</groupId>
               <artifactId>artifactId_for_jar_to_copy</artifactId>
               <version>version_for_jar_to_copy</version>
               <type>jar</type>
               <overWrite>false</overWrite>
               <outputDirectory>${project.build.directory}/classes</outputDirectory>
             </artifactItem>
           </artifactItems>
         </configuration>
       </execution>
     </executions>
   </plugin>

   <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <executions>
            <execution>
                <id>make-a-jar</id>
                <phase>compile</phase>
                <goals>
                    <goal>jar</goal>
                </goals>
                <configuration>
                    <finalName>jar_file_name</finalName>                   
                </configuration>
            </execution>
        </executions>
    </plugin>

copying the content of one jar into another jar in maven

1 Answers1