操作xml 4种方法

 

Xml代码

1. <?xml version="1.0" encoding="GB2312"?>  
2. <RESULT>  
3. <VALUE>　　   
4.   <NO>A1234</NO>　　   
5.   <ADDR>河南省郑州市</ADDR>  
6. </VALUE>  
7. <VALUE>　　   
8.   <NO>B1234</NO> 　   
9.   <ADDR>河南省郑州市二七区</ADDR>  
10. </VALUE>  
11. </RESULT>   

<?xml version="1.0" encoding="GB2312"?>
<RESULT>
 <VALUE>　　
  <NO>A1234</NO>　　
  <ADDR>河南省郑州市</ADDR>
 </VALUE>
 <VALUE>　　
  <NO>B1234</NO> 　
  <ADDR>河南省郑州市二七区</ADDR>
 </VALUE>
</RESULT>

第一种 DOM 实现方法：

Java代码

1. import java.io.File;   
2.   
3. import javax.xml.parsers.DocumentBuilder;   
4. import javax.xml.parsers.DocumentBuilderFactory;   
5.   
6. import org.w3c.dom.Document;   
7. import org.w3c.dom.NodeList;   
8.   
9. public class MyXMLReader2DOM {   
10. public static void main(String arge[]) {   
11.   
12.   long lasting = System.currentTimeMillis();   
13.   
14.   try {   
15.     File f = new File("data_10k.xml");   
16.     DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();   
17.     DocumentBuilder builder = factory.newDocumentBuilder();   
18.     Document doc = builder.parse(f);   
19.     NodeList nl = doc.getElementsByTagName("VALUE");   
20.    for (int i = 0; i < nl.getLength(); i++) {   
21.      System.out.print("车牌号码:"+ doc.getElementsByTagName("NO").item(i).getFirstChild().getNodeValue());   
22.      System.out.println("车主地址:"+ doc.getElementsByTagName("ADDR").item(i).getFirstChild().getNodeValue());   
23.     }   
24.    } catch (Exception e) {   
25.     e.printStackTrace();   
26.    }   
27. }   
28. }  

import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;

public class MyXMLReader2DOM {
 public static void main(String arge[]) {

  long lasting = System.currentTimeMillis();
 
  try {
   File f = new File("data_10k.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();
  }
 }
}

第二种，DOM4J实现方法：

Java代码

1. import java.io.*;   
2. import java.util.*;   
3. import org.dom4j.*;   
4. import org.dom4j.io.*;   
5.   
6. public class MyXMLReader2DOM4J {   
7. public static void main(String arge[]) {   
8.   long lasting = System.currentTimeMillis();   
9.   try {   
10.     File f = new File("data_10k.xml");   
11.     SAXReader reader = new SAXReader();   
12.     Document doc = reader.read(f);   
13.     Element root = doc.getRootElement();   
14.     Element foo;   
15.    for (Iterator i = root.elementIterator("VALUE"); i.hasNext();) {   
16.      foo = (Element) i.next();   
17.      System.out.print("车牌号码:" + foo.elementText("NO"));   
18.      System.out.println("车主地址:" + foo.elementText("ADDR"));   
19.     }   
20.    } catch (Exception e) {   
21.     e.printStackTrace();   
22.    }   
23. }   
24. }  

import java.io.*;
import java.util.*;
import org.dom4j.*;
import org.dom4j.io.*;

public class MyXMLReader2DOM4J {
 public static void main(String arge[]) {
  long lasting = System.currentTimeMillis();
  try {
   File f = new File("data_10k.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();
  }
 }
}

第三种 JDOM实现方法：

Java代码

1. import java.io.*;   
2. import java.util.*;   
3. import org.jdom.*;   
4. import org.jdom.input.*;   
5.   
6. public class MyXMLReader2JDOM {   
7. public static void main(String arge[]) {   
8.   long lasting = System.currentTimeMillis();   
9.   try {   
10.     SAXBuilder builder = new SAXBuilder();   
11.     Document doc = builder.build(new File("data_10k.xml"));   
12.     Element foo = doc.getRootElement();   
13.     List allChildren = foo.getChildren();   
14.    for (int i = 0; i < allChildren.size(); i++) {   
15.      System.out.print("车牌号码:"+ ((Element) allChildren.get(i)).getChild("NO").getText());   
16.      System.out.println("车主地址:"+ ((Element) allChildren.get(i)).getChild("ADDR").getText());   
17.     }   
18.    } catch (Exception e) {   
19.     e.printStackTrace();   
20.    }   
21. }   
22. }  

import java.io.*;
import java.util.*;
import org.jdom.*;
import org.jdom.input.*;

public class MyXMLReader2JDOM {
 public static void main(String arge[]) {
  long lasting = System.currentTimeMillis();
  try {
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File("data_10k.xml"));
   Element foo = doc.getRootElement();
   List allChildren = foo.getChildren();
   for (int i = 0; i < allChildren.size(); i++) {
    System.out.print("车牌号码:"+ ((Element) allChildren.get(i)).getChild("NO").getText());
    System.out.println("车主地址:"+ ((Element) allChildren.get(i)).getChild("ADDR").getText());
   }
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}

第四种SAX实现方法：

Java代码

1. import javax.xml.parsers.SAXParser;   
2. import javax.xml.parsers.SAXParserFactory;   
3.   
4. import org.xml.sax.Attributes;   
5. import org.xml.sax.InputSource;   
6. import org.xml.sax.SAXException;   
7. import org.xml.sax.helpers.DefaultHandler;   
8.   
9. public class MyXMLReader2SAX extends DefaultHandler {   
10.   
11. java.util.Stack tags = new java.util.Stack();   
12.   
13. public MyXMLReader2SAX() {   
14.   super();   
15. }   
16.   
17. public static void main(String args[]) {   
18.   long lasting = System.currentTimeMillis();   
19.   try {   
20.     SAXParserFactory sf = SAXParserFactory.newInstance();   
21.     SAXParser sp = sf.newSAXParser();   
22.     MyXMLReader2SAX reader = new MyXMLReader2SAX();   
23.     sp.parse(new InputSource("data_10k.xml"), reader);   
24.    } catch (Exception e) {   
25.     e.printStackTrace();   
26.    }   
27.   
28.    System.out.println("运行时间：" + (System.currentTimeMillis() - lasting)   
29.      + "毫秒");   
30. }   
31.   
32. public void characters(char ch[], int start, int length)   
33.    throws SAXException {   
34.    String tag = (String) tags.peek();   
35.   if (tag.equals("NO")) {   
36.     System.out.print("车牌号码：" + new String(ch, start, length));   
37.    }   
38.   if (tag.equals("ADDR")) {   
39.     System.out.println("地址:" + new String(ch, start, length));   
40.    }   
41. }   
42.   
43. public void startElement(String uri, String localName, String qName,   
44.     Attributes attrs) {   
45.    tags.push(qName);   
46. }   
47. }