java操作xml

//读取、修改XML

public class XmlDom4jParser {

    public void modifyDocument(File inputXml) {
        try {
            SAXReader saxReader = new SAXReader();
            Document document = saxReader.read(inputXml);
            List list = document.selectNodes("//article/@level");
            Iterator iter = list.iterator();
            while (iter.hasNext()) {
                Attribute attribute = (Attribute) iter.next();
                if (attribute.getValue().equals("Intermediate")) attribute.setValue("Introductory");
            }

            list = document.selectNodes("//article/@date");
            iter = list.iterator();
            while (iter.hasNext()) {
                Attribute attribute = (Attribute) iter.next();
                if (attribute.getValue().equals("December-2001")) attribute.setValue("October-2002");
            }
            list = document.selectNodes("//article");
            iter = list.iterator();
            while (iter.hasNext()) {
                Element element = (Element) iter.next();
                Iterator iterator = element.elementIterator("title");
                while (iterator.hasNext()) {
                    Element titleElement = (Element) iterator.next();
                    if (titleElement.getText().equals("Java configuration with XMLSchema")) {
                        titleElement.setText("Create flexible and extensible XML schema");

                    }
                }
            }
            list = document.selectNodes("//article/author");
            iter = list.iterator();
            while (iter.hasNext()) {
                Element element = (Element) iter.next();
                Iterator iterator = element.elementIterator("firstname");
                while (iterator.hasNext()) {
                    Element firstNameElement = (Element) iterator.next();
                    if (firstNameElement.getText().equals("Marcello")) firstNameElement.setText("Ayesha");
                }
            }
            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");
                }
            }
            XMLWriter output = new XMLWriter(new FileWriter(new File("category2.xml")));
            output.write(document);
            output.close();
        } catch (DocumentException e) {
            System.out.println(e.getMessage());
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }

    public static void main(String[] argv) {
        XmlDom4jParser dom4jParser = new XmlDom4jParser();
        dom4jParser.modifyDocument(new File("category1.xml"));
    }

}

 

 

//生成XML

public class XmlDom4jUtil {

    // 生成xml文档
    public void generateDocument() {

        Document document = DocumentHelper.createDocument();
        // root node
        Element catalogElement = document.addElement("catalog");
        catalogElement.addComment("我的国家");
        catalogElement.addProcessingInstruction("target", "text");

        Element journalElement = catalogElement.addElement("journal");
        journalElement.addAttribute("title", "XML Zone");
        journalElement.addAttribute("publisher", "IBM developerWorks");

        Element articleElement = journalElement.addElement("article");
        articleElement.addAttribute("level", "Intermediate");
        articleElement.addAttribute("date", "December-2001");

        Element titleElement = articleElement.addElement("title");
        titleElement.setText("Java configuration with XML Schema");
        Element authorElement = articleElement.addElement("author");
        Element firstNameElement = authorElement.addElement("firstname");
        firstNameElement.setText("我的国家失望");
        Element lastNameElement = authorElement.addElement("lastname");
        lastNameElement.setText("Vitaletti");

        // document.addDocType("catalog", null, "file://c:/Dtds/catalog.dtd");
        try {
            XMLWriter output = new XMLWriter(new FileWriter(new File("category1.xml")));
            output.write(document);
            output.close();
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }

    public static void main(String[] argv) {
        XmlDom4jUtil dom4j = new XmlDom4jUtil();
        dom4j.generateDocument();
    }
}