四种XML操作方式的基本使用方法

ceshi.xml文件：

<?xml version="1.0" encoding="GB2312"?>
<RESULT>
<VALUE>
   <NO>A1234</NO>
   <ADDR>四川省XX县XX镇XX路X段XX号</ADDR>
</VALUE>
<VALUE>
   <NO>B1234</NO>
   <ADDR>四川省XX市XX乡XX村XX组</ADDR>
</VALUE>
</RESULT>

 

1）DOM

import java.io.*;
import java.util.*;
import org.w3c.dom.*;
import javax.xml.parsers.*;
public class MyXMLReader{
public static void main(String arge[]){
   long lasting =System.currentTimeMillis();
   try{
    File f=new File("ceshi.xml");
    DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
    DocumentBuilder builder=factory.newDocumentBuilder();
    Document doc = builder.parse(f);
    NodeList nl = doc.getElementsByTagName("VALUE");
    for (int i=0;i<nl.getLength();i++){
     System.out.print("车牌号码:" +
       doc.getElementsByTagName("NO").item(i).getFirstChild().getNodeValue());
     System.out.println("车主地址:" +
       doc.getElementsByTagName("ADDR").item(i).getFirstChild().getNodeValue());
    }
   }catch(Exception e){
    e.printStackTrace();
   }
}
}

    2）SAX

import org.xml.sax.*;
import org.xml.sax.helpers.*;
import javax.xml.parsers.*;
public class MyXMLReader extends DefaultHandler {
java.util.Stack tags = new java.util.Stack();
public MyXMLReader() {
   super();
}
public static void main(String args[]) {
   long lasting = System.currentTimeMillis();
   try {
    SAXParserFactory sf = SAXParserFactory.newInstance();
    SAXParser sp = sf.newSAXParser();
    MyXMLReader reader = new MyXMLReader();
    sp.parse(new InputSource("ceshi.xml"), reader);
   } catch (Exception e) {
    e.printStackTrace();
   }
   System.out.println("运行时间：" + (System.currentTimeMillis() - lasting) + "毫秒");}
public void characters(char ch[], int start, int length) throws SAXException {
   String tag = (String) tags.peek();
   if (tag.equals("NO")) {
    System.out.print("车牌号码：" + new String(ch, start, length));
   }
   if (tag.equals("ADDR")) {
    System.out.println("地址:" + new String(ch, start, length));
   }
}
public void startElement(String uri,String localName,String qName,Attributes attrs) {
   tags.push(qName);
}
}

 

3）JDOM

import java.io.*;
import java.util.*;
import org.dom4j.*;
import org.dom4j.io.*;
public class MyXMLReader {
public static void main(String arge[]) {
   long lasting = System.currentTimeMillis();
   try {
    File f = new File("ceshi.xml");
    SAXReader reader = new SAXReader();
    Document doc = reader.read(f);
    Element root = doc.getRootElement();
    Element foo;
    for (Iterator i = root.elementIterator("VALUE"); i.hasNext();){
     foo = (Element) i.next();
     System.out.print("车牌号码:" + foo.elementText("NO"));
     System.out.println("车主地址:" + foo.elementText("ADDR"));
    }
   } catch (Exception e) {
    e.printStackTrace();
   }
}
}

    4）DOM4J

import java.io.*;
import java.util.*;
import org.dom4j.*;
import org.dom4j.io.*;
public class MyXMLReader {
public static void main(String arge[]) {
   long lasting = System.currentTimeMillis();
   try {
    File f = new File("ceshi.xml");
    SAXReader reader = new SAXReader();
    Document doc = reader.read(f);
    Element root = doc.getRootElement();
    Element foo;
    for (Iterator i = root.elementIterator("VALUE"); i.hasNext();){
     foo = (Element) i.next();
     System.out.print("车牌号码:" + foo.elementText("NO"));
     System.out.println("车主地址:" + foo.elementText("ADDR"));
    }
   } catch (Exception e) {
    e.printStackTrace();
   }
}
}