jdom操作xml

jdom操作xml:

解析过程：

          //创建解析器

           SAXBuilder buil=new SAXBuilder();

           //加载xml文件，返回的是Document对象

           Document doc;

           try {

                doc = buil.build(new FileReader(new File("myfile.xml")));

                //获取xml根节点

                Element root=doc.getRootElement();

                //获取子节点

                List <Element> list=root.getChildren("bookInfo", root.getNamespace());

                for(Element e:list){

                     Element t=e.getChild("title", e.getNamespace());

                     Element a=e.getChild("author", e.getNamespace());

                     String bookName=t.getText();

                     String author=a.getText();

                     int age=Integer.parseInt(a.getAttributeValue("age"));

                     String sex=a.getAttributeValue("sex");

                     System.out.println("书名："+bookName+ "  作者名：  "+author+"   age:  "+age+"   sex:  "+sex);

                }

           

           } catch (FileNotFoundException e1) {

                // TODO Auto-generated catch block

                e1.printStackTrace();

           } catch (JDOMException e1) {

                // TODO Auto-generated catch block

                e1.printStackTrace();

           } catch (IOException e1) {

                // TODO Auto-generated catch block

                e1.printStackTrace();

           }

     }

创建XML过程：

           //所有XML内存的根

           Document document=null;

           //创建<myfille></myfile>

           Element root=new Element("myfile");

           Element title=new Element("tile");

           Element author=new Element("author");

           

           //设置author的属性两种方法  第一种方法

           author.setAttribute("age","11");

           //第二种方法（使用对象的方式存入）

           Attribute sex=new Attribute("sex", "22");

           author.setAttribute(sex);

           

           title.setAttribute("name","title");

           

           root.addContent(title);

           root.addContent(author);

           

           //放入文本的两种方式

           author.setText("jack");

           author.addContent("jack");

           title.addContent("java编程思想");

           

           document=new Document(root);

           //对文档单行getCompactFormat();或者多行.getPrettyFormat()显示的确定  

           Format f=Format.getPrettyFormat();

           //必须用GB2312

           f.setEncoding("GB2312");

           //使用jdom封装好的进行开流

           XMLOutputter out=new XMLOutputter(f);

           try {

                out.output(document, new FileWriter(new File("myfile.xml")));

                

           } catch (IOException e) {

                e.printStackTrace();

           }

           System.out.println("end");

           }

           */