在Java中使用外部DTD进行XML验证

我读过 this question

Person.DTD

<?xml version="1.0" encoding="UTF-8"?>
<!ELEMENT person (id)>
<!ELEMENT id (#PCDATA)>

测验

@Test
public void should_serialize_a_shootout_to_xml_and_validate_against_a_dtd(){
    String xml = "<person><id>12</id></person>";        
    Assert.assertTrue(validate_xml("person.dtd",xml));
}

boolean validate_xml(String dtd_filename,String xml){
    //check xml and throw validation errors
    throw new NotImplementedException();
}

谢谢