Rhythmk 一步一步学 JAVA (16) dom4j 操作XML-白红宇

Rhythmk 一步一步学 JAVA (16) dom4j 操作XML

阅读量：5248 次

发布时间：2019-06-14

本文共 4287 字，大约阅读时间需要 14 分钟。

1、项目文件结构图：

2、文件代码：

doc.xml

Dom4jMain.java

package Dom4j.Rrhythmk.com;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileWriter;import java.io.IOException;import java.io.InputStream;import java.io.ObjectInputStream.GetField;import java.io.Writer;import java.util.Iterator;import java.util.List;import org.dom4j.Document;import org.dom4j.Element;import org.dom4j.io.SAXReader;import org.dom4j.DocumentHelper;public class Dom4jMain {    public static void main(String[] args) {        String path = System.getProperty("user.dir") + "\\" + "\\xml\\Doc.xml";        System.out.println(path);        ReadXML(path);        StringToXML();    }    /*     * 读取XML     */    public static void ReadXML(String path) {        try {            InputStream inputStream = new FileInputStream(new File(path));            SAXReader saxRD = new SAXReader();            Document doc = saxRD.read(inputStream);            Element element = doc.getRootElement();            System.out.println("getNamespace:" + element.getNamespace());            System.out.println("节点名称-getName:" + element.getName());            System.out.println("getText:" + element.getText());            Iterator
     
       bookList = element.elements("Book").iterator();            while (bookList.hasNext()) {                Element nextElement = bookList.next();                System.out.println(nextElement.attribute("id").getText());                System.out                        .println(nextElement.element("Name").getStringValue());                System.out                        .println(nextElement.element("Type").getStringValue());            }        } catch (Exception e) {            e.printStackTrace();        }    }    /*     *  字符串转换XML     *  修改XML节点     *  保存XML     * */        public static void StringToXML() {        try {            // 1、字符串转换XML            System.out.println("StringToXML-字符串转换成XML对象");            String xmlStr = "
      
       
        
         语文
        
        
         文科
        
       
       
        
         数学
        
        
         理科
        
       
      ";            Document doc = DocumentHelper.parseText(xmlStr);            Element rootElement = doc.getRootElement();            List
      
        list = rootElement.elements("Book");                    for (Element e : list) {                System.out.println("id-" + e.attributeValue("id").toString());                System.out.println("Name-"                        + e.element("Name").getTextTrim());                System.out.println("Type-"                        + e.element("Type").getTextTrim());                                System.out.println("path-"                        + e.element("Type").getPath());                            }             // 2、修改XML节点            System.out.println("修改XML节点");            for (Element e : list) {                                e.element("Type").setText(e.element("Type").getTextTrim()+"1");            }                        System.out.println("输出XML字符串");                        System.out.println( doc.asXML());             // 3、保存XML            String path = System.getProperty("user.dir") + "\\" + "\\xml\\Doc"+java.util.UUID.randomUUID().toString() +".xml";            Writer  write=new FileWriter(path);            write.write(doc.asXML());            write.flush();            write.close();            System.out.println("生成XML文件路径:"+path);                    } catch (Exception e) {            e.printStackTrace();        }    }    }