我是JAVA SAX
的初學者。我有一個大的XML
文件,我想從中提取一些信息。下面是XML
文件,我想提取和代碼:如何從大型XML中獲取特定元素的值
...
<Synset baseConcept="3" id="mizaAj_n2AR">
<SynsetRelations>
<SynsetRelation relType="hyponym" targets="TaboE_n2AR"/>
<SynsetRelation relType="hyponym" targets="TaboE_n2AR"/>
<SynsetRelation relType="hypernym" targets="ragobap_n4AR"/>
<SynsetRelation relType="hypernym" targets="ragobap_n4AR"/>
<SynsetRelation relType="hypernym" targets="Tiybap_Aln~afos_n1AR"/>
<SynsetRelation relType="hypernym" targets="Tiybap_Aln~afos_n1AR"/>
</SynsetRelations>
<MonolingualExternalRefs>
<MonolingualExternalRef externalReference="04623612-n" externalSystem="PWN30"/>
</MonolingualExternalRefs>
</Synset>
<Synset baseConcept="3" id="ragobap_n4AR">
<SynsetRelations>
<SynsetRelation relType="antonym" targets="mizaAj_n2AR"/>
<SynsetRelation relType="antonym" targets="mizaAj_n2AR"/>
</SynsetRelations>
<MonolingualExternalRefs>
<MonolingualExternalRef externalReference="04624826-n" externalSystem="PWN30"/>
</MonolingualExternalRefs>
</Synset>
<Synset baseConcept="3" id="tasal~uT_n1AR">
<SynsetRelations>
<SynsetRelation relType="has_instance" targets="simap_n1AR"/>
<SynsetRelation relType="is_instance" targets="simap_n1AR"/>
</SynsetRelations>
<MonolingualExternalRefs>
<MonolingualExternalRef externalReference="04625882-n" externalSystem="PWN30"/>
</MonolingualExternalRefs>
</Synset>
...
我想:從XML
文件
提取
hyponym: 2
hypernym: 4
antonym: 2
has_instance: 1
is_instance:1
代碼(主類和我處理器):
import java.io.IOException;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
public class Main {
public static void main(String[] args) throws SAXException, IOException{
XMLReader p = XMLReaderFactory.createXMLReader();
p.setContentHandler(new handler());
p.parse("test1.xml");
}
----------------------------------------
import org.xml.sax.helpers.DefaultHandler;
public class handler extends DefaultHandler {
@Override
public void startElement(String SpacenameURI, String localName,
String qName, Attributes attrs) {
System.out.println("qname = " + qName);
String node = qName;
if (attrs != null) {
for (int i = 0; i < attrs.getLength(); i++) {
//nous récupérons le nom de l'attribut
String aname = attrs.getLocalName(i);
//Et nous affichons sa valeur
System.out.println("Attribut " + aname + " valeur : " + attrs.getValue(i));
}
}
}
}
什麼是你的問題? – geoffreydv
我確實提到了我想要的。我想從XML文件中獲取一些信息。我的代碼沒有給我正確的信息。 – bttX
因此,如果我理解正確,您不需要這些值,但是您想要計算文件中某些特定元素的出現次數。你想要每個Synset元素的計數還是一般的整個文件? – geoffreydv