JAVA读XML的三种方法实现方法.doc

第一种 DOM 实现方法：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：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：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.prin