DOM4J相关

//创建XML

//与XML元素冲突的用Element.addCDATA(String s)

 

 　　Document document = DocumentHelper.createDocument();
        Element root = document.addElement( "topics" );

        for(int i=0;i<topicList.size();i++){
         TopicBean  topic = (TopicBean)topicList.get(i);
         Element topicE = root.addElement("topic");
         
         topicE.addElement("id").addText(topic.getId()+"");
         topicE.addElement("poster").addText(toUTF(topic.getPostUser()));
         topicE.addElement("title").addText(toUTF(topic.getTitle()));
         
        }
               
        return document.asXML();

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//读取XML

SAXReader saxReader = new SAXReader();
  Document document = saxReader.read(new File("D:/RenDa.xml")); 

  String str = document.getRootElement().element("channel").element("item").element("description").getText()

 

或者是

 

List list = document.selectNodes("//article/author" );

iter=list.iterator();

while(iter.hasNext()){

      Element element=(Element)iter.next();
      Iterator iterator=element.elementIterator("lastname");

      while(iterator.hasNext()){
           Element lastNameElement=(Element)iterator.next();
           if(lastNameElement.getText().equals("Vitaletti"))
                lastNameElement.setText("Malik");
      }
}

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//把Document输出到文件

XMLWriter output = new XMLWriter(
      new FileWriter( new File("c:/catalog/catalog-modified.xml") ));
     output.write( document );
     output.close();

 

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//根据String来读取ＸＭＬ

SAXReader saxReader = new SAXReader();
   Document document;
   try {
    document = saxReader.read(new ByteArrayInputStream(str.getBytes()));  
    Element rootElement = document.getRootElement();
   
    String getXMLEncoding   =   document.getXMLEncoding();
    String rootname   =   rootElement.getName();
     System.out.println("getXMLEncoding>>>"   +   getXMLEncoding   +   ",rootname>>>"   +   rootname);  
   
    OutputFormat format = OutputFormat.createPrettyPrint();
    /** 指定XML字符集编码 */
    format.setEncoding("GB2312");
    /** 将document中的内容写入文件中 */
    XMLWriter writer = new XMLWriter(new FileWriter(new File("cctv.xml")),format);
    writer.write(document);
    writer.close();

   } catch (DocumentException e) {
    // TODOAuto-generatedcatchblock
    e.printStackTrace();