public static Document load(String filename) {  
    Document document = null;  
    try {  
        SAXReader saxReader = new SAXReader();  
        document = saxReader.read(new File(filename)); // 读取XML文件,获得document对象  
    } catch (Exception ex) {  
        ex.printStackTrace();  
    }  
    return document;  
}  
  
public static Document load(URL url) {  
    Document document = null;  
    try {  
        SAXReader saxReader = new SAXReader();  
        document = saxReader.read(url); // 读取XML文件,获得document对象  
    } catch (Exception ex) {  
        ex.printStackTrace();  
    }  
    return document;  
}  

Xml xml = new Xml();  
  
Document dom = xml.load(path + "/" + file);  
  
Element root = dom.getRootElement();  

Element menuElement = root.addElement("menu");  
  
Element engNameElement = menuElement.addElement("engName");  
  
engNameElement.setText(catNameEn);  
  
Element chiNameElement = menuElement.addElement("chiName");  
  
chiNameElement.setText(catName);  

public static boolean doc2XmlFile(Document document, String filename) {  
    boolean flag = true;  
    try {  
        XMLWriter writer = new XMLWriter(new OutputStreamWriter(  
                new FileOutputStream(filename), "UTF-8"));  
        writer.write(document);  
        writer.close();  
    } catch (Exception ex) {  
        flag = false;  
        ex.printStackTrace();  
    }  
    System.out.println(flag);  
    return flag;  
}  

public void writeTo(OutputStream out, String encoding)  
        throws UnsupportedEncodingException, IOException {  
    OutputFormat format = OutputFormat.createPrettyPrint();  
  
    format.setEncoding("gb2312");  
  
    XMLWriter writer = new XMLWriter(System.out, format);  
  
    writer.write(doc);  
  
    writer.flush();  
  
    return;  
  
}  

public boolean isOnly(String catNameEn, HttpServletRequest request,  
        String xml) {  
    boolean flag = true;  
    String path = request.getRealPath("");  
    Document doc = load(path + "/" + xml);  
    Element root = doc.getRootElement();  
    for (Iterator i = root.elementIterator(); i.hasNext();) {  
        Element el = (Element) i.next();  
        if (catNameEn.equals(el.elementTextTrim("engName"))) {  
            flag = false;  
            break;  
        }  
    }  
    return flag;  
}  

public static void main(String args[]) {  
  
    String fileName = "c:/text.xml";  
  
    Document document = DocumentHelper.createDocument();// 建立document对象，用来操作xml文件  
  
    Element booksElement = document.addElement("books");// 建立根节点  
  
    booksElement.addComment("This is a test for dom4j ");// 加入一行注释  
  
    Element bookElement = booksElement.addElement("book");// 添加一个book节点  
  
    bookElement.addAttribute("show", "yes");// 添加属性内容  
  
    Element titleElement = bookElement.addElement("title");// 添加文本节点  
  
    titleElement.setText("ajax in action");// 添加文本内容  
  
    try {  
  
        XMLWriter writer = new XMLWriter(new FileWriter(new File(fileName)));  
  
        writer.close();  
  
    } catch (Exception e) {  
  
        e.printStackTrace();  
  
    }  
  
}  

public static void modifyXMLFile() {  
  
    String oldStr = "c:/text.xml";  
  
    String newStr = "c:/text1.xml";  
  
    Document document = null;  
  
    //修改节点的属性  
  
    try {  
  
    SAXReader saxReader = new SAXReader(); // 用来读取xml文档  
  
    document = saxReader.read(new File(oldStr)); // 读取xml文档  
  
    List list = document.selectNodes("/books/book/@show");// 用xpath查找节点book的属性  
  
    Iterator iter = list.iterator();  
  
    while (iter.hasNext()) {  
  
    Attribute attribute = (Attribute) iter.next();  
  
    if (attribute.getValue().equals("yes"))   
  
        attribute.setValue("no");  
  
    }  
  
    } catch (Exception e) {  
  
        e.printStackTrace();  
  
    }  
  
    //修改节点的内容  
  
    try {  
  
    SAXReader saxReader = new SAXReader(); // 用来读取xml文档  
  
    document = saxReader.read(new File(oldStr)); // 读取xml文档  
  
    List list = document.selectNodes("/books/book/title");// 用xpath查找节点book的内容  
  
    Iterator iter = list.iterator();  
  
    while (iter.hasNext()) {  
  
    Element element = (Element) iter.next();  
  
    element.setText("xxx");// 设置相应的内容  
  
    }  
  
    } catch (Exception e) {  
  
        e.printStackTrace();  
  
    }  
  
       
  
    try {  
  
    XMLWriter writer = new XMLWriter(new FileWriter(new File(newStr)));  
  
    writer.write(document);  
  
    writer.close();  
  
    } catch (Exception ex) {  
  
        ex.printStackTrace();  
  
    }  
  
}  

public static void removeNode() {  
  
    String oldStr = "c:/text.xml";  
  
    String newStr = "c:/text1.xml";  
  
    Document document = null;  
  
    try {  
  
        SAXReader saxReader = new SAXReader();// 用来读取xml文档  
  
        document = saxReader.read(new File(oldStr));// 读取xml文档  
  
        List list = document.selectNodes("/books/book");// 用xpath查找对象  
  
        Iterator iter = list.iterator();  
  
        while (iter.hasNext()) {  
  
            Element bookElement = (Element) iter.next();  
  
            // 创建迭代器，用来查找要删除的节点,迭代器相当于指针，指向book下所有的title节点  
  
            Iterator iterator = bookElement.elementIterator("title");  
  
            while (iterator.hasNext()) {  
  
                Element titleElement = (Element) iterator.next();  
  
                if (titleElement.getText().equals("ajax in action")) {  
  
                    bookElement.remove(titleElement);  
  
                }  
  
            }  
  
        }  
  
    } catch (Exception e) {  
  
        e.printStackTrace();  
  
    }  
  
    try {  
  
        XMLWriter writer = new XMLWriter(new FileWriter(new File(newStr)));  
  
        writer.write(document);  
  
        writer.close();  
  
    } catch (Exception ex) {  
  
        ex.printStackTrace();  
  
    }  
  
}  

SAXReader reader = new SAXReader();  
Document   document = reader.read(new File("input.xml"));      

String text = "<members></members>";      
Document document = DocumentHelper.parseText(text);  

Document document = DocumentHelper.createDocument();      
Element root = document.addElement("members");// 创建根节点 

Element rootElm = document.getRootElement();      

Element memberElm=root.element("member");// "member"是节点名      

String text=memberElm.getText();     
String text=root.elementText("name");这个是取得根节点下的name字节点的文字.      

List nodes = rootElm.elements("member");      
for (Iterator it = nodes.iterator(); it.hasNext();) {      
    Element elm = (Element) it.next();      
   // do something      
}  

for(Iterator it=root.elementIterator();it.hasNext();){      
       Element element = (Element) it.next();      
        // do something      
}   

Element ageElm = newMemberElm.addElement("age");     

ageElm.setText("29");   

parentElm.remove(childElm);    // childElm是待删除的节点,parentElm是其父节点     

Element contentElm = infoElm.addElement("content");      
contentElm.addCDATA(diary.getContent());     

Element root=document.getRootElement();          
Attribute attribute=root.attribute("size");    // 属性名name    

String text=attribute.getText();    
String text2=root.element("name").attributeValue("firstname");
//这个是取得根节点下name字节点的firstname属性的值.      

Element root=document.getRootElement();
for(Iterator it=root.attributeIterator();it.hasNext();){
    Attribute attribute = (Attribute) it.next();
    String text=attribute.getText();
    System.out.println(text);
}

newMemberElm.addAttribute("name", "sitinspring");   

Attribute attribute=root.attribute("name");      
attribute.setText("sitinspring");  

Attribute attribute=root.attribute("size");// 属性名name      
root.remove(attribute);      

XMLWriter writer = new XMLWriter(new FileWriter("output.xml"));      
writer.write(document);      
writer.close();    

OutputFormat format = OutputFormat.createPrettyPrint();
format.setEncoding("GBK");    // 指定XML编码
XMLWriter writer = new XMLWriter(new FileWriter("output.xml"),format);
writer.write(document);
writer.close();

String text = "<members> <member>sitinspring</member> </members>";      
Document document = DocumentHelper.parseText(text);      

SAXReader reader = new SAXReader();
Document document = reader.read(new File("input.xml"));
Element root=document.getRootElement();
String docXmlText=document.asXML();
String rootXmlText=root.asXML();
Element memberElm=root.element("member");
String memberXmlText=memberElm.asXML();      

List list=document.selectNodes("/books/book/@show");