【Java】XML解析之JDOM

JDOM介绍

　　JDOM是一个开源项目，它基于树型结构，利用纯JAVA的技术对XML文档实现解析、生成、序列化以及多种操作。使用jdom需要引入jdom.jar包。

XML生成及解析

　　代码如下：

　　

 package com.test.jdom;

 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.List;

 import org.jdom2.Document;
 import org.jdom2.Element;
 import org.jdom2.JDOMException;
 import org.jdom2.input.SAXBuilder;
 import org.jdom2.output.Format;
 import org.jdom2.output.XMLOutputter;

 public class TestJdom  {  

     public static void main(String[] args) {

         createXml();
         parserXml();
     }

     public static void createXml() {
         //文档
         Document document = new Document();
         //根元素
         Element root = new Element("conpany");
         //设置属性
         root.setAttribute("name","hd");
         //添加根目录
         document.setRootElement(root);

         Element department = new Element("department");
         department.setAttribute("name","department1");
         //添加到根目录
         root.addContent(department); 

         Element employee = new Element("employee");
         employee.setAttribute("name","employee1");
         employee.setAttribute("id","1");
         //设置文本
         employee.setText("123");
         department.addContent(employee);
         XMLOutputter xmlOut = new XMLOutputter();
         xmlOut.setFormat(Format.getPrettyFormat());
         try {
             xmlOut.output(document, new FileOutputStream("src/test-jdom-create.xml"));
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }  

     public static void parserXml() {
         // 创建一个SAXBuilder
         SAXBuilder builder = new  SAXBuilder();
         try {
             // 通过输入源SAX构造一个Document
             Document document = builder.build("src/test-jdom-create.xml");
             //获取根节点
             Element root = document.getRootElement();
             // 获得root节点下面的所有子节点
             List<Element> departmentList = root.getChildren();
             for (Element  department: departmentList) {
                 // 获得节点属性
                 System.out.println(department.getName()+"\t"+department.getAttributeValue("name"));
                 List<Element> employeeList = department.getChildren();
                 for (Element employee : employeeList) {
                     // 获得节点属性和文本
                     System.out.println("\t" +  employee.getName() + "\t"+ employee.getAttributeValue("name") + "\t"+ employee.getText());
                 }
             }
         } catch (JDOMException  e) {
             System.out.println(e.getMessage());
         } catch (IOException e) {
             System.out.println(e.getMessage());
         }
     }
 }  

　　生成文本：

　　

　　输出结果：