DOM4J解析XML文档

• Dom4j是一个简单，灵活的开放源代码的库
• Dom4j是一个非常优秀的Java XML API
• 使用Dom4j开发，需下载dom4j相应的jar文件
• dom4j的导航
  

        http://dom4j.sourceforge.net/dom4j-1.6.1/guide.html

     

• dom4j保存数据的乱码问题 

             //在第一本上添加一个新的售价：<售价>209元</售价>  

        SAXReader reader = new SAXReader();        Document document = reader.read(new File("src/book.xml"));

        Element book =document.getRootElement().element("书");

        book.addElement("售价").setText("200元")；

        XMLWriter writer = new XMLWriter(new OutputStreamWriter( new OutputStream("src/book.xml") ,"UTF-8") );
        writer.write( document );        writer.close()
                                                                                                                                              //在第一本上指定位置添加一个新的售价：<售价>309元</售价>  
        SAXReader reader = new SAXReader();        Document document = reader.read(new File("src/book.xml"));
        Element book =document.getRootElement().element("书");
        List list = book.elsement();//[书名，作者，售价]
        Element price = DocumentHelper.create("售价")
        price.setText(309元);
        list.add(2,price);
        
       XMLWriter writer = new XMLWriter(new OutputStreamWriter( new OutputStream("src/book.xml") ,"UTF-8") );
        writer.write( document );        writer.close()