public static void templateConfigInit() {
        Document document = getDocument("/templateConfig.xml");// 文档对象
        Element root = document.getRootElement();// 根节点
        Element config = root.element("config");// config节点
    
        for (Iterator<Element> it = config.elementIterator(); it.hasNext();) {
            Element el = it.next();
            
            if (COMPANY_LEVEL_TEMPLATE.equals(el.getName())) {
                for (Iterator<Element> itc = el.elementIterator(); itc.hasNext();) {
                    Element elc = itc.next();
                    setTemplate(elc, COMPANY_LEVEL_TEMPLATE);
                }
            }
            
            else if (DIVISION_LEVEL_TEMPLATE.equals(el.getName())) {
                for (Iterator<Element> itc = el.elementIterator(); itc.hasNext();) {
                    Element elc = itc.next();
                    setTemplate(elc, DIVISION_LEVEL_TEMPLATE);
                }
            }
        }
        log.info("load [templateConfig.xml] completed");
    }

------解决方案--------------------
dom4j比较好用
使用dom4j创建catalog.xml
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.XMLWriter;
import java.io.*;
public class XmlDom4J{
public void generateDocument(){
Document document = DocumentHelper.createDocument();
    Element catalogElement = document.addElement("catalog");
    catalogElement.addComment("An XML Catalog");
    catalogElement.addProcessingInstruction("target","text");
    Element journalElement =  catalogElement.addElement("journal");