Output directory

Default output directory used by UMlet Maven Plugin is ${project.reporting.outputDirectory}/uml, you can change the location as:

<project>
    ...
    <build>
        ...
        <plugins>
            ...
            <plugin>
                <groupId>com.kryshchuk.maven.plugins</groupId>
                <artifactId>umlet-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <id>convert-uml-to-jpeg</id>
                        <goals>
                            <goal>convert</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>target/jpeg-images</outputDirectory>
                            <format>jpg</format>
                        </configuration>
                    </execution>
                    <execution>
                        <id>convert-uml-to-gif</id>
                        <goals>
                            <goal>convert</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>target/gif-images</outputDirectory>
                            <format>gif</format>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            ...
        </plugins>
        ...
    </build>
    ...
</project>

Diagram sources

If you do not specify explicitly, the UMlet Maven Plugin will look for diagrams in src/site/resources/uml subtree. You can change the location as:

<project>
    ...
    <build>
        ...
        <plugins>
            ...
            <plugin>
                <groupId>com.kryshchuk.maven.plugins</groupId>
                <artifactId>umlet-maven-plugin</artifactId>
                <configuration>
                    <format>jpg</format>
                    <filesets>
                        <fileset>
                            <directory>src/uml</directory>
                            <includes>
                                <include>**/*.uxf</include>
                            </incudes>
                            <excludes>
                                <exclude>proba1</exclude>
                                <exclude>proba2</exclude>
                                <exclude>**/stage/**</exclude>
                            </excludes>
                        </fileset>
                    </filesets>
                </configuration>
                <executions>
                    <execution>
                        <id>convert-uml</id>
                        <goals>
                            <goal>convert</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            ...
        </plugins>
        ...
    </build>
    ...
</project>