Java笔记——XML解析

 1 import java.io.File; 2 import java.io.IOException; 3 import javax.xml.parsers.DocumentBuilder; 4 import javax.xml.parsers.DocumentBuilderFactory; 5 import javax.xml.parsers.ParserConfigurationException; 6 import org.w3c.dom.Document; 7 import org.w3c.dom.Element; 8 import org.w3c.dom.Node; 9 import org.w3c.dom.NodeList;10 import org.xml.sax.SAXException;11 12 public class XmlTest {13 14     public static void main(String[] args) {15 16         try {17             18             DocumentBuilderFactory builderFactory = DocumentBuilderFactory19                     .newInstance();20             DocumentBuilder builder = builderFactory.newDocumentBuilder();21             Document document = builder.parse(new File("NewFile.xml"));22             Element root = document.getDocumentElement();23             System.out.PRintln(root.getAttribute("name")+":");24             NodeList list = root.getElementsByTagName("student");25             for (int i = 0; i < list.getLength(); i++) {26                 Element student = (Element) list.item(i);27                 System.out.println("-----------------------");28                 System.out.println("id= " + student.getAttribute("id"));29                 NodeList clist = student.getChildNodes();30                 for (int j = 0; j < clist.getLength(); j++) {31                     Node c = clist.item(j);32                     if (c instanceof Element) {33                         System.out.println(c.getNodeName() + "="34                                 + c.getTextContent());35                     }36                 }37             }38 39         } catch (ParserConfigurationException e) {40             e.printStackTrace();41         } catch (SAXException e) {42             e.printStackTrace();43         } catch (IOException e) {44             e.printStackTrace();45         }46 47     }48 }

被解析的XML：

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <root name="StudentInformation"> 3     <student id="1"> 4         <name>张三</name> 5         <address>北京</address> 6     </student> 7     <student id="2"> 8         <name>李四</name> 9         <address>上海</address>10     </student>11     <student id="3">12         <name>王五</name>13         <address>广州</address>14     </student>15 </root>

显示结果：

StudentInformation:-----------------------id= 1name=张三address=北京-----------------------id= 2name=李四address=上海-----------------------id= 3name=王五address=广州