Java DOM解析器

这是需要我们查询的输入XML文件:

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<?xml version="1.0"?>
<cars>
   <supercars company="Ferrari">
      <carname type="formula one">Ferarri 101</carname>
      <carname type="sports car">Ferarri 201</carname>
      <carname type="sports car">Ferarri 301</carname>
   </supercars>
   <supercars company="Lamborgini">
      <carname>Lamborgini 001</carname>
      <carname>Lamborgini 002</carname>
      <carname>Lamborgini 003</carname>
   </supercars>
   <luxurycars company="Benteley">
      <carname>Benteley 1</carname>
      <carname>Benteley 2</carname>
      <carname>Benteley 3</carname>
   </luxurycars>
</cars>

演示示例: