package com.ks.app.utils.xml;
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import com.ks.app.dto.admin.PageNav;
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import org.springframework.util.AntPathMatcher;
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import org.w3c.dom.Document;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import org.xml.sax.SAXException;
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import org.yeshi.utils.StringUtil;
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import javax.xml.parsers.DocumentBuilder;
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import javax.xml.parsers.DocumentBuilderFactory;
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import javax.xml.parsers.ParserConfigurationException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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/**
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* @author hxh
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* @title: PageNavUtil
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* @description: 页面导航帮助类
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* @date 2022/5/18 16:35
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*/
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public class PageNavUtil {
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/**
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* @return java.util.List<com.yeshi.makemoney.app.dto.admin.PageNav>
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* @author hxh
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* @description 解析导航
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* @date 16:49 2022/5/18
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* @param: inputStream
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**/
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private static List<PageNav> parseNav(InputStream inputStream) throws ParserConfigurationException, IOException, SAXException {
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DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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//2.创建DocumentBuilder对象
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DocumentBuilder builder = factory.newDocumentBuilder();
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Document d = builder.parse(inputStream);
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Node root = d.getElementsByTagName("navs").item(0);
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NodeList items = root.getChildNodes();
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List<PageNav> list = new ArrayList<>();
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for (int i = 0; i < items.getLength(); i++) {
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if (items.item(i).getNodeName().equalsIgnoreCase("nav")) {
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list.add(parseNav(items.item(i)));
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}
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}
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return list;
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}
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private static PageNav parseNav(Node node) {
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PageNav nav = new PageNav();
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String name = node.getAttributes().getNamedItem("name") == null ? null : node.getAttributes().getNamedItem("name").getNodeValue();
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String path = node.getAttributes().getNamedItem("path") == null ? null : node.getAttributes().getNamedItem("path").getNodeValue();
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String icon = node.getAttributes().getNamedItem("icon") == null ? null : node.getAttributes().getNamedItem("icon").getNodeValue();
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nav.setName(name);
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nav.setPath(path);
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nav.setIcon(icon);
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if (node.getChildNodes() != null && node.getChildNodes().getLength() > 0) {
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List<PageNav> children = new ArrayList<>();
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for (int i = 0; i < node.getChildNodes().getLength(); i++) {
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if (node.getChildNodes().item(i).getNodeName().equalsIgnoreCase("nav")) {
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children.add(parseNav(node.getChildNodes().item(i)));
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}
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}
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nav.setChildren(children);
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}
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return nav;
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}
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/**
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* @return java.util.List<com.yeshi.makemoney.app.dto.admin.PageNav>
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* @author hxh
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* @description 获取页面导航
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* @date 18:02 2022/5/18
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* @param: pathList
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**/
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public static List<PageNav> getPageNavs(List<String> pathList) {
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List<PageNav> pageNavs = null;
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try {
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pageNavs = PageNavUtil.parseNav(PageNavUtil.class.getClassLoader().getResourceAsStream("admin/nav.xml"));
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} catch (ParserConfigurationException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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} catch (SAXException e) {
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e.printStackTrace();
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}
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for (PageNav nav : pageNavs) {
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filter(nav, pathList);
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}
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//删除一级空目录
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for (int i = 0; i < pageNavs.size(); i++) {
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if (StringUtil.isNullOrEmpty(pageNavs.get(i).getPath()) && pageNavs.get(i).getChildren() == null) {
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pageNavs.remove(i--);
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}
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}
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return pageNavs;
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}
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/**
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* @return void
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* @author hxh
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* @description 过滤掉没有在pathList中的导航选项
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* @date 18:01 2022/5/18
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* @param: root
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* @param: pathList
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**/
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public static void filter(PageNav root, List<String> pathList) {
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if (root == null || root.getChildren() == null || root.getChildren().size() == 0) {
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return;
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} else {
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for (int i = 0; i < root.getChildren().size(); i++) {
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filter(root.getChildren().get(i), pathList);
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}
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for (int i = 0; i < root.getChildren().size(); i++) {
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PageNav child = root.getChildren().get(i);
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if (!StringUtil.isNullOrEmpty(child.getPath()) && !pathMatch(child.getPath(), pathList)) {
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root.getChildren().remove(i--);
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}
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}
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if (root.getChildren().size() == 0) {
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root.setChildren(null);
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}
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return;
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}
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}
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private static boolean pathMatch(String path, List<String> pathList) {
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AntPathMatcher matcher = new AntPathMatcher();
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for (String regex : pathList) {
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if (matcher.match(regex, path)) {
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return true;
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}
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}
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return false;
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}
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public static void main(String[] args) throws IOException, SAXException, ParserConfigurationException {
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List<PageNav> result = getPageNavs(Arrays.asList(new String[]{"team/vip.html"}));
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System.out.println(result);
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}
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}
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