java读取xml文件的四种方法

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lixuguang01 2014-05-05 10:32:57

Xml代码 
<?xmlversion="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]view plaincopy
<?xmlversion="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;   
publicclass MyXMLReader2DOM {   
publicstaticvoid 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();   
  }   
 }   
}  

[java]view plaincopy
import java.io.File;  
import javax.xml.parsers.DocumentBuilder;  
import javax.xml.parsers.DocumentBuilderFactory;  
import org.w3c.dom.Document;  
import org.w3c.dom.NodeList;  
publicclass MyXMLReader2DOM {  
publicstaticvoid 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.*;   
publicclass MyXMLReader2DOM4J {   
publicstaticvoid 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();   
  }   
 }   
}  

[java]view plaincopy
import java.io.*;  
import java.util.*;  
import org.dom4j.*;  
import org.dom4j.io.*;  
publicclass MyXMLReader2DOM4J {  
publicstaticvoid 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.*;   
publicclass MyXMLReader2JDOM {   
publicstaticvoid 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();   
  }   
 }   
}  

[java]view plaincopy
import java.io.*;  
import java.util.*;  
import org.jdom.*;  
import org.jdom.input.*;  
publicclass MyXMLReader2JDOM {  
publicstaticvoid 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;   
publicclass MyXMLReader2SAX extends DefaultHandler {   
 java.util.Stack tags = new java.util.Stack();   
public MyXMLReader2SAX() {   
super();   
 }   
publicstaticvoid 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");   
 }   
publicvoid 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));   
  }   
 }   
publicvoid startElement(String uri, String localName, String qName,   
   Attributes attrs) {   
  tags.push(qName);   
 }   
} 