java中四种操作xml方式简单例子

 java代码

import java.io.*;
import java.util.*;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
import javax.xml.parsers.*;
public class DOMSimple {
public static void main(String[] args) {
long lasting = System.currentTimeMillis();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
File f = new File("src/NewFile.xml");
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(f);
NodeList nl = doc.getElementsByTagName("value");
for(int i = 0; i < nl.getLength(); i ++) {
System.out.println("no ->" + doc.getElementsByTagName
("no").item(i).getFirstChild().getNodeValue());
System.out.println("addr ->" + doc.getElementsByTagName
("addr").item(i).getFirstChild().getNodeValue());
}
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}

xml代码

<?xml version="1.0" encoding="UTF-8"?>
<result>
<value>
<no>A1234</no>
<addr>Aaddr</addr>
</value>
<value>
<no>B1234</no>
<addr>Baddr</addr>
</value>
</result>