怎样实现XML标签和标签值的解析？

import { xml, util } from '@kit.ArkTS'; // 需要使用util模块函数对文件编码
let strXml: string =
'<?xml version="1.0" encoding="utf-8"?>' +
  '<note importance="high" logged="true">' +
  '<title>Play</title>' +
  '<lens>Work</lens>' +
  '</note>';
let textEncoder: util.TextEncoder = new util.TextEncoder();
let arrBuffer: Uint8Array = textEncoder.encodeInto(strXml); 
let that: xml.XmlPullParser = new xml.XmlPullParser(arrBuffer.buffer as object as ArrayBuffer, 'UTF-8');
let str: string = '';
function func(name: string, value: string): boolean {
  str = name + value;
  console.info(str);
  return true; //true:继续解析 false:停止解析
}
let options: xml.ParseOptions = {supportDoctype:true, ignoreNameSpace:true, tagValueCallbackFunction:func};
that.parse(options);