swagger ui via dependency plugin

pom.xml

<profile>
  <id>swagger-ui</id>
  <build>
    <plugins>
      <!-- Step 1. - Download Swagger UI webjar -->
      <plugin>
        <artifactId>maven-dependency-plugin</artifactId>
        <executions>
          <execution>
            <id>swagger ui</id>
            <phase>prepare-package</phase>
            <goals>
              <goal>unpack</goal>
            </goals>
            <configuration>
              <artifactItems>
                <artifactItem>
                  <groupId>org.webjars</groupId>
                  <artifactId>swagger-ui</artifactId>
                  <version>${swagger-ui.version}</version>
                </artifactItem>
              </artifactItems>
              <outputDirectory>${project.build.directory}/swagger-ui</outputDirectory>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <!-- Step 2. Add Swagger-ui Resources to the WAR -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <configuration>
          <webResources combine.children="append">
            <resource>
              <directory>${project.build.directory}/swagger-ui/META-INF/resources/webjars/swagger-ui/${swagger-ui.version}</directory>
              <includes>
                <include>**/*.*</include>
              </includes>
              <targetPath>swagger-ui</targetPath>
            </resource>
          </webResources>
        </configuration>
      </plugin>
    </plugins>
  </build>
</profile>