Java dom4j parses XML file code instance sharing

There are two ways to parse XML files. One is to use Dom to parse. This way is more troublesome to write code, which is easy to cause problems for new programmers. The second is to use the Dom4j package to parse
When you want to use the Dom4j package, you definitely want to import the package first

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.Iterator;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class Dom4jDemo{

public void createXml(String fileName,String txtName) {
Document document = DocumentHelper.createDocument();
Element root = document.addElement("root");
Element head = root.addElement("head");
Element type = head.addAttribute("type", "0");
Element code = head.addAttribute("code", "3003");
Element yhlb = head.addElement("yhlb");
yhlb.setText("01");
Element username = head.addElement("username");
username.setText("gsyh");
Element password = head.addElement("password");
password.setText("zheshimima");
Element body = root.addElement("body");
Element data = body.addElement("data");
Element dzwjm = data.addElement("dzwjm");
dzwjm.setText(txtName);
try {
//Written to the file
Writer fileWriter = new FileWriter(fileName);
OutputFormat format = OutputFormat.createPrettyPrint();
XMLWriter xmlWriter = new XMLWriter(fileWriter,format);
xmlWriter.write(document);
xmlWriter.close();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}

public String parserXml(String fileName) {
String findFileName = "";
File inputXml = new File(fileName);
SAXReader saxReader = new SAXReader();
try {
Document document = saxReader.read(inputXml);
Element root = document.getRootElement();
for(Iterator i = root.elementIterator();i.hasNext();){
Element head = (Element) i.next();
for(Iterator j = head.elementIterator();j.hasNext();){
Element elem = (Element) j.next();
System.out.println(elem.getName()+":"+elem.getText());
for(Iterator k=elem.elementIterator();k.hasNext();){
Element last = (Element) k.next();
System.out.println(last.getName()+":"+last.getText());
findFileName = last.getText();
}
}
}
} catch (DocumentException e) {
System.out.println(e.getMessage()+"hello");
}
System.out.println("dom4j parserXml");
return findFileName;
}

public static void main(String[] args){
Dom4jDemo demo = new Dom4jDemo();
demo.createXml("D://request.xml","test.txt");
demo.parserXml("e://request.xml");
}