CODEWITHSUNDEEP
javamavenjava-native-interface
Don Code
Don Code

Reputation: 878

How to add a local JNI jar in a pom file properly?

I have a SpringbootApplication that provides a REST API, let's call it fetchPrediction.

This fetchPrediction API uses some classes defined inside a JAR file, which is a JNI.

My application compiles and starts, however, if I call the fetchPrediction API it fails.

When I do jar -xvf on the created jar after mvn clean install, I do not see the classes that should be picked up by including the jar dependency.

Also, when I try to run the Jar file I see ClassNotDefinedException for the classes inside the JAR.

How can I do this properly?

Currently I am importing the JAR dependency as follows: 

    <dependency>
        <groupId>jarcom.jarlib</groupId>
        <artifactId>jarname</artifactId>
        <version>1.0</version>
        <scope>system</scope>
        <systemPath>${project.basedir}/jarname.jar</systemPath>
    </dependency>

Upvotes: 0

Views: 253

Answers (1)

khmarbaise
khmarbaise

Reputation: 97447

In an spring boot application you usually do not have JNI parts. Furthermore the spring-boot-maven-plugin by default does not include dependencies with <scope>system</scope> that's the reason why you do not see the jar file in the resulting jar.

You have to have to configure the spring-boot-maven-plugin and set the includeSystemScope to true as described in the docs for the plugin.

<project>
  ...
  <build>
    ...
    <plugins>
      ...
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>2.2.4.RELEASE</version>
        <executions>
          <execution>
            <id>repackage</id>
            <goals>
              <goal>repackage</goal>
            </goals>
            <configuration>
              <includeSystemScope>true</includeSystemScope>
            </configuration>
          </execution>
        </executions>
        ...
      </plugin>
      ...
    </plugins>
    ...
  </build>
  ...
</project>

Upvotes: 1

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