使用Jdom来把一棵完整的树生成XML
?public String parseXML() {
??String parseContent = JspUtils.getParameter(getRequest(),
????"parseContent", "");
??Long deep = JspUtils.getLongParameter(getRequest(), "deep", new Long(-1));
??String selectInfos = JspUtils.getParameter(getRequest(), "selectInfos",
????"");
??List categorys = categoryManageService.findSubCategories(null, null,
????false, parseContent, true);
??Element root = new Element("root");
??root.setAttribute("type", selectInfos);
??Element curElement = root;
??if (!Utilities.isNullOrEmpty(categorys)) {
???for (int i = 0; i < categorys.size(); i++) {
????Category c = (Category) categorys.get(i);
????Element elements = new Element("node");
????elements.setAttribute("type", "category");
????elements.setAttribute("tId", c.getId() + "");
????elements.setAttribute("pId",
??????c != null && c.getParent() != null ? c.getParent()
????????.getId()
????????+ "" : "-1");
????elements.setAttribute("name", c != null
??????&& !StringUtils.isNullOrEmpty(c.getName()) ? c
??????.getName() : "");
????if (selectInfos.equalsIgnoreCase("topic")) {
?????Element tElement = null;
?????List<Topic> topics = categoryManageService.findTopics(c);
?????if (!Utilities.isNullOrEmpty(topics)) {
??????????????? for (Topic topic : topics) {
????????????? ?? tElement = new Element("node");
????????????? ?? tElement.setAttribute("tId", topic != null ? topic.getId()+"" : "01");
????????????? ?? tElement.setAttribute("pId", c.getId() + "");
????????????? ?? tElement.setAttribute("name", topic != null && !StringUtils.isNullOrEmpty(topic.getName()) ? topic.getName() : "");
????????? ??? elements.addContent(tElement);
??????????????? }
?????}
????}
????addElementIntoEML(elements, curElement, root);
????System.out.println(curElement);
???}
??}
??
??Document doc = new Document(root);
??String newFile = "E:/xml/"+selectInfos+".xml";
??try {
???File file = new File(newFile);
???if (!file.exists()) {
????file.createNewFile();
???}
???XMLOutputter XMLOut = new XMLOutputter();
???OutputStream os = new FileOutputStream(file);
???XMLOut.setEncoding("utf-8");
???XMLOut.setNewlines(true);
???XMLOut.setIndent(3);
???
???XMLOut.output(doc, os);
???os.close();
??} catch (Exception e) {
???e.printStackTrace();
??}?
??getRequest().setAttribute("newFile", newFile);
??return "parseXML";
?}
?
?private void addElementIntoEML(Element newElement, Element curElement, Element root) {
??Element temp = curElement;
??while (temp != null) {
???if (newElement.getAttributeValue("pId").equals(temp.getAttributeValue("tId"))
?????|| temp.getAttributeValue("type").equals(root.getAttributeValue("type"))) {
????temp.addContent(newElement);
????curElement = newElement;
????return;
???}
???temp = temp.getParent();
??}
?}
?
