【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：