You should include your project dependencies in your .jar file. Basically you need a fat .jar file. This is necessary otherwise your .jar will not be able to make use of those dependencies it needs and will give an error.
Here is one of the ways to do it. You should add the following plugin to your pom.xml file:
<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-assembly-plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.3.0</version>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>Maven Assembly Plugin will include all the pom.xml dependencies to your .jar file.
Then you must run the following maven goal:
mvn clean install package assembly:single
Alternatively you can also run:
mvn clean compile assembly:single
Once you have generated the .jar with all its dependencies you must paste it in the /standalone/deployments Keycloak directory. And that's it!
Source:
- https://stackoverflow.com/a/1729094
- https://stackoverflow.com/a/574650
- https://stackoverflow.com/a/16222971
docker cp target/user-storage-spi-0.0.1-SNAPSHOT-jar-with-dependencies.jar container_id:/opt/jboss/keycloak/standalone/deployments/user-storage-spi-0.0.1-SNAPSHOT-jar-with-dependencies.jarCreate src/main/resources/hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://x.x.x.x:3306/YOUR_DB_NAME</property>
<property name="connection.username">YOUR_DB_USERNAME</property>
<property name="connection.password">YOUR_DB_PASSWORD</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQL8Dialect</property>
<!-- Hibernate settings -->
<property name="hibernate.show_sql">true</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.timeout">1800</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.acquire_increment">3</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<!-- <property name="hibernate.c3p0.initialPoolSize">5</property> -->
<property name="hibernate.c3p0.validate">true</property>
<!-- List all the mapping documents we're using -->
<!-- <mapping resource="example01/Teacher.hbm.xml"/> -->
<!-- <mapping class="example01.Teacher"/> -->
<mapping class="com.germanfica.entity.Role"/>
<mapping class="com.germanfica.entity.User"/>
</session-factory>
</hibernate-configuration>Note for Docker users: Containers can be addressed by their name or alias. As long as they are on the same network. Instead of x.x.x.x put the container name. Your can find more information here: https://www.tutorialworks.com/container-networking/
Apache Maven Compiler Plugin
<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.0</version>
</dependency>Keycloak Server SPI
<!-- https://mvnrepository.com/artifact/org.keycloak/keycloak-server-spi -->
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-server-spi</artifactId>
<version>17.0.0</version>
<scope>provided</scope>
</dependency>Hibernate
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.6.5.Final</version>
</dependency>Check the Hibernate official documentation.
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