操作xml 4种方法

Xml代码

<?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>

<?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



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();
}
}
}

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



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();
}
}
}

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



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();
}
}
}

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



import javax.xml.parsers.SAXParser;

import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;

import org.xml.sax.InputSource;

import org.xml.sax.SAXException;

import org.xml.sax.helpers.DefaultHandler;

public
class MyXMLReader2SAX
extends DefaultHandler {

java.util.Stack tags = new java.util.Stack();

public MyXMLReader2SAX() {

super();

}

public
static
void main(String args[]) {

long lasting = System.currentTimeMillis();

try {

SAXParserFactory sf = SAXParserFactory.newInstance();
SAXParser sp = sf.newSAXParser();
MyXMLReader2SAX reader = new MyXMLReader2SAX();

sp.parse(new InputSource("data_10k.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);
}
}