Spring Boot Redis error when dockerized, but not with maven run

Question

I am building an application with Spring Boot using Redis (with redisson).

When I run my application in development mode, it works fine, but when I try to run it in docker containers, it fails with the error

java.lang.ClassNotFoundException:org.springframework.data.redis.connection.ReactiveStreamCommands

My maven configuration for Redis:

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
             <groupId>org.redisson</groupId>
             <!-- for Spring Data Redis v.2.2.x -->
             <artifactId>redisson-spring-data-22</artifactId>
             <version>3.12.2</version>
        </dependency>

My maven configuration to build docker container:

            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>1.2.1</version>
                <dependencies>
                    <dependency>
                        <groupId>javax.activation</groupId>
                        <artifactId>activation</artifactId>
                        <version>1.1.1</version>
                    </dependency>
                </dependencies>
                <configuration>
                    <imageName>${imageName}</imageName>

                    <!-- default properties to tag an image -->
                    <image>${imageName}</image>
                    <newName>${imageName}:${tagName}</newName>

                    <!-- gitlab registry -->
                    <serverId>gitlab-repository</serverId>
                    <registryUrl>my.repository</registryUrl>

                    <baseImage>adoptopenjdk/openjdk11-openj9:latest</baseImage>
                    <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>

                    <!-- copy the service's jar file from target into the root directory 
                        of the image -->
                    <resources>
                        <resource>
                            <targetPath>/</targetPath>
                            <directory>${project.build.directory}</directory>
                            <include>${project.build.finalName}.jar</include>
                        </resource>
                    </resources>
                </configuration>
            </plugin>

When I login to my container and analysie my jar libraries (with the following command):

jar -tf my-app.jar | grep redis

I find this:

BOOT-INF/lib/spring-boot-starter-data-redis-2.1.3.RELEASE.jar
BOOT-INF/lib/spring-data-redis-2.1.5.RELEASE.jar
BOOT-INF/lib/redisson-spring-data-22-3.12.2.jar
BOOT-INF/lib/redisson-3.12.2.jar

Which is exactly the same as I get with my jar for development.

Here is the docker-compose extract on how I launch redis:

  redis:
    image: redis:5.0
    ports:
      - 6379:6379
    networks:
      - network
    volumes:
      - redis:/data
    entrypoint: redis-server --appendonly yes 
    restart: unless-stopped

Any clue on what is missing for my container to run properly? Any idea why the spring-data-redis used in the jar is 2.1.5 and not 2.2.x? Thanks in advance

Answer 1

I have found a solution:

Instead of using redisson-spring-data-22 , I downgraded to redisson-spring-data-16 (as I noticed that the effective version of spring-data-redis used was in fact 2.1.5, which is lower than 2.2...).

I cannot explain why really, but it works now .

I could not find any track on redisson-spring-data of what version should be used in what conditions, so I just tried another version... and it worked!

Hope that helps.