如何将自定义xml文件中的元素和属性访问到项目的pom.xml中？

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-resources-plugin</artifactId>
  <version>3.2.0</version>
  <executions>
    <execution>
      <id>copy-xml-file</id>
      <phase>process-resources</phase>
      <goals>
        <goal>copy-resources</goal>
      </goals>
      <configuration>
        <outputDirectory>${project.build.directory}</outputDirectory>
        <resources>
          <resource>
            <directory>path/to/custom-xml</directory>
            <includes>
              <include>*.xml</include>
            </includes>
          </resource>
        </resources>
      </configuration>
    </execution>
  </executions>
</plugin>

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-antrun-plugin</artifactId>
  <version>3.0.0</version>
  <executions>
    <execution>
      <id>custom-xml-operation</id>
      <phase>process-resources</phase>
      <goals>
        <goal>run</goal>
      </goals>
      <configuration>
        <target>
          <!-- 在这里编写自定义操作的Ant任务 -->
        </target>
      </configuration>
    </execution>
  </executions>
</plugin>