nested exception is java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal

解决问题！！！

缺少包

pom文件引入：

• <!-- https://mvnrepository.com/artifact/xml-apis/xml-apis -->
  <dependency>
      <groupId>xml-apis</groupId>
      <artifactId>xml-apis</artifactId>
      <version>1.4.01</version>
  </dependency>