这是我的家务事。我不明白它想从我这里得到什么以及为什么它不起作用。它在 reader.next() 上失败。路径是对的。这是 StAXParser 的 Java 代码：
public class StAXParser {
private Dances dances;
private Dance currentDance;
private Dancer currentDancer;
public static void main(String[] args) {
StAXParser stAXParser = new StAXParser();
stAXParser.parse("DanceGroupConcerts.xml");
}
public Dances getDances() {
return dances;
}
public StAXParser() {
}
public void parse (String xmlFileName){
try {
XMLStreamReader reader = XMLInputFactory.newInstance().createXMLStreamReader(new StringReader(xmlFileName));
int tag;
String tagName;
String text = new String();
while (reader.hasNext()){
tag = reader.next();
switch (tag){
case XMLStreamReader.START_ELEMENT:
tagName = reader.getLocalName();
if (tagName == "Dances")
dances = new Dances();
if (tagName.equals("Dance"))
currentDance = new Dance();
if (tagName.equals("Dancer"))
currentDancer = new Dancer();
break;
case XMLStreamReader.CHARACTERS:
text = reader.getText();
break;
case XMLStreamReader.END_ELEMENT:
tagName = reader.getLocalName();
if (tagName.equals("Dancer"))
currentDance.getDancers().add(currentDancer);
if (tagName.equals("Dance"))
dances.getDance().add(currentDance);
if (tagName.equals("Type"))
currentDance.setType(text);
if (tagName.equals("Scene"))
currentDance.setScene(text);
if (tagName.equals("NumberOfDancers"))
currentDance.setNumberOfDancers(NumberOfDancers.fromValue(text));
if (tagName.equals("Music"))
currentDance.setMusic(Music.fromValue(text));
if (tagName.equals("Name"))
currentDancer.setName(text);
if (tagName.equals("DanceTeam"))
currentDancer.setNameOfDanceTeam(text);
if (tagName.equals("Age"))
currentDancer.setAge(BigInteger.valueOf(Integer.valueOf(text)));
if (tagName.equals("Experience"))
currentDancer.setExperience(BigInteger.valueOf(Integer.valueOf(text)));
if (tagName.equals("Number"))
currentDance.setNumber(BigInteger.valueOf(Integer.valueOf(text)));
break;
}
}
} catch (XMLStreamException e) {
e.printStackTrace();
}
}
}
和 XSD：
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:Dance="Dancers"
targetNamespace="Dancers">
<simpleType name="Type">
<restriction base="string"></restriction>
</simpleType>
<simpleType name="Scene">
<restriction base="string"></restriction>
</simpleType>
<simpleType name="NumberOfDancers">
<restriction base="string">
<enumeration value="mass"></enumeration>
<enumeration value="solo"></enumeration>
<enumeration value="pair"></enumeration>
</restriction>
</simpleType>
<simpleType name="Music">
<restriction base="string">
<enumeration value="phonogram"></enumeration>
<enumeration value="alive"></enumeration>
</restriction>
</simpleType>
<simpleType name="Number">
<restriction base="integer"></restriction>
</simpleType>
<simpleType name="Name">
<restriction base="string"></restriction>
</simpleType>
<simpleType name="DanceTeam">
<restriction base="string"></restriction>
</simpleType>
<simpleType name="Age">
<restriction base="integer"></restriction>
</simpleType>
<simpleType name="Experience">
<restriction base="integer"></restriction>
</simpleType>
<complexType name="Dancer">
<sequence>
<choice>
<element name="name" type="Dance:Name"></element>
<element name="nameOfDanceTeam" type="Dance:DanceTeam"></element>
</choice>
<element name="age" type="Dance:Age"></element>
<element name="experience" type="Dance:Experience"></element>
</sequence>
</complexType>
<complexType name = "Dance">
<sequence>
<element name="type" type="Dance:Type"></element>
<element name="scene" type="Dance:Scene"></element>
<element name="numberOfDancers" type="Dance:NumberOfDancers"></element>
<element name="music" type="Dance:Music"></element>
<element name="dancers" type="Dance:Dancer" minOccurs="1" maxOccurs="unbounded"></element>
<element name="number" type="Dance:Number"></element>
</sequence>
</complexType>
<element name="Dances">
<complexType>
<sequence>
<element name="Dance" type="Dance:Dance" minOccurs="1" maxOccurs="unbounded"></element>
</sequence>
</complexType>
</element>
</schema>
和 XML：
<?xml version="1.0" encoding="UTF-8"?>
<Dances>
<Dance>
<Type>Folk</Type>
<Scene>Dr. Frank N. Furter Major</Scene>
<NumberOfDancers>mass</NumberOfDancers>
<Music>phonogram</Music>
<Dancer>
<Name>Majenta</Name>
<Age>25</Age>
<Experience>25</Experience>
</Dancer>
<Dancer>
<Name>Riff Raff</Name>
<Age>2500</Age>
<Experience>25</Experience>
</Dancer>
<Dancer>
<Name>Columbia</Name>
<Age>25</Age>
<Experience>25</Experience>
</Dancer>
<Dancer>
<DanceTeam>Guests</DanceTeam>
<Age>2566</Age>
<Experience>667</Experience>
</Dancer>
<Number>1</Number>
</Dance>
</Dances>
感谢帮助。对不起，如果我的英语太糟糕了。