1.创建xml文件

public static void createXml(File file,Source source){try {// 1、创建document对象Document document = DocumentHelper.createDocument();// 2、创建根节点rssElement rss = document.addElement("playbill");// 3、向rss节点添加version属性
//	            rss.addAttribute("billID", "20180928154502-1671404210");
//	            rss.addAttribute("billName", "222");
//	            rss.addAttribute("startTime", "2018-09-28 15:45:02");
//	            rss.addAttribute("storagetype", "isSHLive");// 4、生成子节点及子节点内容Element billIDele = rss.addElement("billID");billIDele.setText(String.valueOf(source.getSourceID()));Element billNameele = rss.addElement("billName");billNameele.setText(source.getSourceName()); Element startTimeele = rss.addElement("startTime");startTimeele.setText(source.getUploadedTime());Element storagetypeele = rss.addElement("storagetype");storagetypeele.setText("isSHLive");Element Serialele = rss.addElement("Serial");Element Parallelele = Serialele.addElement("Parallel");
//	            Element title = channel.addElement("title");
//	            title.setText("国内最新新闻");// 5、设置生成xml的格式// updateXml(new File("F:\\4343\\"),playinfo);OutputFormat format = OutputFormat.createPrettyPrint();// 设置编码格式format.setEncoding("GBK");// 6、生成xml文件            //File file = new File("C://Users//Administrator//Desktop//rss.xml");XMLWriter writer = new XMLWriter(new FileOutputStream(file), format);// 设置是否转义，默认使用转义字符writer.setEscapeText(false);writer.write(document);writer.close();System.out.println("生成rss.xml成功");} catch (Exception e) {e.printStackTrace();System.out.println("生成rss.xml失败");}finally {}}

2.修改生成的xml文件（添加子标签）

//给xml文件增加节点以及内容 public static void updateXml(File file,Playinfo playinfo){try {SAXReader sr = new SAXReader(); sr.setEncoding("GBK");//这里设置文件编码
//		        	Document document = reader.read(new BufferedReader(new InputStreamReader(new FileInputStream(new File(filename)),"UTF-8")));Document document = sr.read(file);Element root = document.getRootElement();Element Serial = root.element("Serial");Element rss = Serial.element("Parallel");Element Mediaele = rss.addElement("Media");Mediaele.addAttribute("host", "rtmp://__SERVICEIP__/vod/");Mediaele.addAttribute("url", "mp4:"+playinfo.getMp4filenamequan());Mediaele.addAttribute("type", "RTMP");Element Mp4fileNameele = Mediaele.addElement("Mp4fileName");Mp4fileNameele.setText(playinfo.getMp4filenamequan());Element Widthele = Mediaele.addElement("Width");Widthele.setText("1920");Element Heightele = Mediaele.addElement("Height");Heightele.setText("1080");Element Mp4FileSizeele = Mediaele.addElement("Mp4FileSize");Mp4FileSizeele.setText(playinfo.getMp4filesize());Element durationele = Mediaele.addElement("duration");durationele.setText("00:01:57");Element Roleele = Mediaele.addElement("Role");Roleele.setText(playinfo.getRole());saveDocument(document, file);System.out.println("修改xml成功");} catch (Exception e) {e.printStackTrace();System.out.println("修改失败");}}public static void saveDocument(Document document, File xmlFile) throws IOException {Writer osWrite = new OutputStreamWriter(new FileOutputStream(xmlFile));// 创建输出流OutputFormat format = OutputFormat.createPrettyPrint(); // 获取输出的指定格式format.setEncoding("GBK");// 设置编码 ，确保解析的xml为UTF-8格式XMLWriter writer = new XMLWriter(osWrite, format);// XMLWriter// 设置是否转义，默认使用转义字符writer.setEscapeText(false);writer.write(document);writer.flush();writer.close();	}

3测试main方法

 public static void main(String[] args) {dom4jTest test  = new dom4jTest();//test.getDownplay("/WebRoot/2433185143-985549700_2_video.xml");Source source = new Source();source.setSourceID(3123);source.setSourceName("长得");source.setUploadedTime("2022");File file = new File("C://Users//Administrator//Desktop//reurewoiru.xml");test.createXml(file,source);/*Playinfo playinfo = new Playinfo();playinfo.setDuration("03:01:33");playinfo.setHeight("1920");playinfo.setWith("1080");playinfo.setMp4filename("124");playinfo.setMp4filenamequan("124.mp4");playinfo.setMp4filesize("20M");playinfo.setRole("3");updateXml(new File("F:\\4343\\20191108141955-1180309147_0_video.xml"), playinfo);*/} 

4生成的xml文件

<?xml version="1.0" encoding="GBK"?><playbill> <billID>16345</billID>  <billName>16345</billName>  <startTime>Tue May 26 16:06:34 CST 2020</startTime>  <storagetype>isSHLive</storagetype>  <Serial> <Parallel><Media host="rtmp://__SERVICEIP__/vod/" url="mp4:124.mp4" type="RTMP"><Mp4fileName>16345.mp4</Mp4fileName><Width>1920</Width><Height>1080</Height><Mp4FileSize>20M</Mp4FileSize><duration>00:01:57</duration><Role>3</Role></Media></Parallel> </Serial> 
</playbill>