Jdom 生成和解析XML文件

我不是女神ヾ 2022-04-16 01:15 253阅读 0赞

//生成XML文件
    
    package com.abin.xml.test;
    
    import java.io.ByteArrayOutputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    
    import org.jdom.Document;
    import org.jdom.Element;
    import org.jdom.output.XMLOutputter;
    
    public class CreateXML1 {
       
    
     public static String doXML()throws FileNotFoundException,IOException{
       
      Element root =new Element("school");
      Document doc=new Document(root);
      for(int i=0;i<5;i++){
       
       Element element=new Element("user");
       element.setAttribute("id", ""+i);
    
       element.addContent(new Element("username").setText("kobe"));
       element.addContent(new Element("age").setText("12"));
       element.addContent(new Element("sex").setText("female"));
    
       root.addContent(element);
      }
      ByteArrayOutputStream byteRsp = new ByteArrayOutputStream();
      XMLOutputter xmlOut=new XMLOutputter();
    
      try {
       
       xmlOut.output(doc, byteRsp);
       xmlOut.output(doc, new FileOutputStream("test2.xml"));
      } catch (Exception e) {
       
       // TODO: handle exception
       e.printStackTrace();
      }
      String result=byteRsp.toString();
      return result;
     }
     public static void main(String[] args)throws IOException{
       
      String result=new CreateXML1().doXML();
      System.out.println("result="+result);
     }
    
    }
    
    
    
    
    
    //解析XML文件
    
    package com.abin.xml.test;
    
    import java.io.File;
    import java.io.IOException;
    import java.util.Iterator;
    import java.util.List;
    
    import org.jdom.Attribute;
    import org.jdom.Document;
    import org.jdom.Element;
    import org.jdom.JDOMException;
    import org.jdom.input.SAXBuilder;
    
    /**
     * jdom解析xml文件
     * 
     * @author ly *
     */
    public class JDomXML {
       
    
     public JDomXML() {
       
     }
    
     /**
      * 解析xml文件
      * 
      * @param xmlFile
      */
     public void parseXml(File xmlFile) {
       
      SAXBuilder sax = new SAXBuilder();// 在内存中建立一个sax文档模型
      try {
       
       Document xmlDom = sax.build(xmlFile);// 创建文档
       // 获得文件的根元素
       Element root = xmlDom.getRootElement();
       System.out.println("根元素是:" + root.getName());
    
       // 获得根元素的子节点
       List childList = root.getChildren();
       Iterator listIt = childList.iterator();
       while (listIt.hasNext()) {
       
        Element element = (Element) listIt.next();
        System.out.println("孩子结点是:" + element.getName());
       }
    
       // 获得第一个孩子结点
       Element firstChild = (Element) childList.get(0);
       // 获得孩子结点的属性
       List attrList = firstChild.getAttributes();
       Iterator attrIt = attrList.iterator();
       while (attrIt.hasNext()) {
       
        Attribute attr = (Attribute) attrIt.next();
        System.out.println("第一个元素的属性是:" + attr.getName());
        // 获得属性的值
        System.out.println("属性的值是:" + attr.getValue());
        // 获得属性的类型
        System.out.println("属性的类型是:" + attr.getAttributeType());
       }
    
       List sonList = firstChild.getChildren();
       Iterator sonIt = sonList.iterator();
       while (sonIt.hasNext()) {
       
        Element temp = (Element) sonIt.next();
        System.out.println("属性" + temp.getName() + "的值是:"
          + temp.getValue());
       }
    
      } catch (JDOMException e) {
       
       e.printStackTrace();
      } catch (IOException e) {
       
       e.printStackTrace();
      }
     }
    
     public static void main(String[] args) {
       
      JDomXML test = new JDomXML();
      test.parseXml(new File("test2.xml"));
     }
    }