Maven and adding JARs to system scope

Question

I have a JAR in my Android project and I want it to be added to final APK. Okay, here I go:

    <dependency>         <groupId>com.loopj.android.http</groupId>         <artifactId>android-async-http</artifactId>         <version>1.3.2</version>         <type>jar</type>         <scope>system</scope>         <systemPath>${project.basedir}/libs/android-async-http-1.3.2.jar</systemPath>     </dependency> 

But when I am running mvn package I am getting a warning:

[WARNING] Some problems were encountered while building the effective model for **apk:1.0 [WARNING] 'dependencies.dependency.systemPath' for com.loopj.android.http:android-async-http:jar should not point at files within the project directory, ${project.basedir}/libs/android-async-http-1.3.2.jar will be unresolvable by dependent projects @ line 36, column 25 

And in the final APK there are no JARs.

How do I fix that?

Answer 1

I don't know the real reason but Maven pushes developers to install all libraries (custom too) into some maven repositories, so scope:system is not well liked, A simple workaround is to use maven-install-plugin

follow the usage:

write your dependency in this way

<dependency>     <groupId>com.mylib</groupId>     <artifactId>mylib-core</artifactId>     <version>0.0.1</version> </dependency> 

then, add maven-install-plugin

<plugin>     <groupId>org.apache.maven.plugins</groupId>     <artifactId>maven-install-plugin</artifactId>     <version>2.5.2</version>     <executions>         <execution>             <id>install-external</id>             <phase>clean</phase>             <configuration>                 <file>${basedir}/lib/mylib-core-0.0.1.jar</file>                 <repositoryLayout>default</repositoryLayout>                 <groupId>com.mylib</groupId>                 <artifactId>mylib-core</artifactId>                 <version>0.0.1</version>                 <packaging>jar</packaging>                 <generatePom>true</generatePom>             </configuration>             <goals>                 <goal>install-file</goal>             </goals>         </execution>     </executions> </plugin> 

pay attention to phase:clean, to install your custom library into your repository, you have to run mvn clean and then mvn install

Answer 2

You will need to add the jar to your local maven repository. Alternatively (better option) specify the proper repository (if one exists) so it can be automatically downloaded by maven

In either case, remove the <systemPath> tag from the dependency