jdom学习(3)

Jdom使用详解及实例(3)

接上一节:

4.Attribute类:

xml 代码

<table width="100%" border="0"> <!---->table>

String width = table.getAttributeValue("width");//获得attribute

int border = table.getAttribute("width").getIntValue();

table.setAttribute("vspace", "0");//设置attribute

table.removeAttribute("vspace");// 删除一个或全部attribute

table.getAttributes().clear();

5.命名空间操作

<xhtml:html></xhtml:html>

 xmlns:xhtml="http://www.w3.org/1999/xhtml">

<xhtml:title>Home Page</xhtml:title>

Namespace xhtml = Namespace.getNamespace("xhtml", "http://www.w3.org/1999/xhtml");

List kids = html.getChildren("title", xhtml);

Element kid = html.getChild("title", xhtml);

kid.addContent(new Element("table", xhtml));

6.XSLT格式转换

使用以下函数可对XSLT转换

最后如果你需要使用w3c的Document则需要转换一下。

public static Document transform(String stylesheet，Document in)

                                        throws JDOMException {

     try {

       Transformer transformer = TransformerFactory.newInstance()

                             .newTransformer(new StreamSource(stylesheet));

       JDOMResult out = new JDOMResult();

       transformer.transform(new JDOMSource(in), out);

       return out.getDeocument();

     }

     catch (TransformerException e) {

       throw new JDOMException("XSLT Trandformation failed", e);

     }

   }

四.用例:

1、生成xml文档：

java 代码

public class WriteXML{

    public void BuildXML() throws Exception {

        Element root,student,number,name,age;

        root = new Element("student-info"); //生成根元素：student-info

        student = new Element("student"); //生成元素：student(number,name,age)

        number = new Element("number");

        name = new Element("name");

        age = new Element("age");

        Document doc = new Document(root); //将根元素植入文档doc中

        number.setText("001");

        name.setText("lnman");

        age.setText("24");

        student.addContent(number);

        student.addContent(name);

        student.addContent(age);

        root.addContent(student);

        Format format = Format.getCompactFormat();

        format.setEncoding("gb2312"); //设置xml文件的字符为gb2312

        format.setIndent("    "); //设置xml文件的缩进为4个空格

        XMLOutputter XMLOut = new XMLOutputter(format);//元素后换行一层元素缩四格

        XMLOut.output(doc, new FileOutputStream("studentinfo.xml"));

}

    public static void main(String[] args) throws Exception {

        WriteXML w = new WriteXML();

        System.out.println("Now we build an XML document .....");

        w.BuildXML();

        System.out.println("finished!");

}

}

生成的xml文档为：

xml 代码

<?xml version="1.0" encoding="gb2312"?>

<student-info>

    <student>

        <number>001</number>

        <name>lnman</name>

        <age>24</age>

    </student>

</student-info>

创建XML文档2：

java 代码

public class CreateXML {

 public void Create() {

  try {

   Document doc = new Document();

   ProcessingInstruction pi=new ProcessingInstruction("xml-stylesheet","type="text/xsl" href="test.xsl"");

   doc.addContent(pi);

   Namespace ns = Namespace.getNamespace("http://www.bromon.org" );

   Namespace ns2 = Namespace.getNamespace("other", "http://www.w3c.org" );

   Element root = new Element("根元素", ns);

   root.addNamespaceDeclaration(ns2);

   doc.setRootElement(root);

   Element el1 = new Element("元素一");

   el1.setAttribute("属性", "属性一");

   Text text1=new Text("元素值");

            Element em = new Element("元素二").addContent("第二个元素");

   el1.addContent(text1);

            el1.addContent(em);

            Element el2 = new Element("元素三").addContent("第三个元素");

            root.addContent(el1);

            root.addContent(el2);

            //缩进四个空格,自动换行,gb2312编码

            XMLOutputter outputter = new XMLOutputter("  ", true,"GB2312");

            outputter.output(doc, new FileWriter("test.xml"));

        }catch(Exception e)  {

         System.out.println(e);

        }

    }

    public static void main(String args[]) {

     new CreateXML().Create();

    }

}

分享到：

jdom学习(4) | jdom学习(2)

• 2007-01-26 15:08
• 浏览 870
• 评论(0)
• 查看更多