xml转map工具类

首先导入第三方库

implementation 'org.dom4j:dom4j:2.1.1'

源码如下

/**
     * xml转map 不带属性
     *
     * @param xmlStr
     * @param needRootKey 是否需要在返回的map里加根节点键
     * @return
     * @throws DocumentException
     */
    public static Map xml2map(String xmlStr, boolean needRootKey) throws DocumentException {
        Document doc = DocumentHelper.parseText(xmlStr);
        Element root = doc.getRootElement();
        Map<String, Object> map = (Map<String, Object>) xml2map(root);
        if (root.elements().size() == 0 && root.attributes().size() == 0) {
            return map;
        }
        if (needRootKey) {
            //在返回的map里加根节点键（如果需要）
            Map<String, Object> rootMap = new HashMap<String, Object>();
            rootMap.put(root.getName(), map);
            return rootMap;
        }
        return map;
    }

    /**
     * xml转map 带属性
     *
     * @param xmlStr
     * @param needRootKey 是否需要在返回的map里加根节点键
     * @return
     * @throws DocumentException
     */
    public static Map xml2mapWithAttr(String xmlStr, boolean needRootKey) throws DocumentException {
        Document doc = DocumentHelper.parseText(xmlStr);
        Element root = doc.getRootElement();
        Map<String, Object> map = (Map<String, Object>) xml2mapWithAttr(root);
        if (root.elements().size() == 0 && root.attributes().size() == 0) {
            return map; //根节点只有一个文本内容
        }
        if (needRootKey) {
            //在返回的map里加根节点键（如果需要）
            Map<String, Object> rootMap = new HashMap<String, Object>();
            rootMap.put(root.getName(), map);
            return rootMap;
        }
        return map;
    }

    /**
     * xml转map 不带属性
     *
     * @param e
     * @return
     */
    private static Map xml2map(Element e) {
        Map map = new LinkedHashMap();
        List list = e.elements();
        if (list.size() > 0) {
            for (int i = 0; i < list.size(); i++) {
                Element iter = (Element) list.get(i);
                List mapList = new ArrayList();

                if (iter.elements().size() > 0) {
                    Map m = xml2map(iter);
                    if (map.get(iter.getName()) != null) {
                        Object obj = map.get(iter.getName());
                        if (!(obj instanceof List)) {
                            mapList = new ArrayList();
                            mapList.add(obj);
                            mapList.add(m);
                        }
                        if (obj instanceof List) {
                            mapList = (List) obj;
                            mapList.add(m);
                        }
                        map.put(iter.getName(), mapList);
                    } else
                        map.put(iter.getName(), m);
                } else {
                    if (map.get(iter.getName()) != null) {
                        Object obj = map.get(iter.getName());
                        if (!(obj instanceof List)) {
                            mapList = new ArrayList();
                            mapList.add(obj);
                            mapList.add(iter.getText());
                        }
                        if (obj instanceof List) {
                            mapList = (List) obj;
                            mapList.add(iter.getText());
                        }
                        map.put(iter.getName(), mapList);
                    } else
                        map.put(iter.getName(), iter.getText());
                }
            }
        } else
            map.put(e.getName(), e.getText());
        return map;
    }

    /**
     * xml转map 带属性
     *
     * @param element
     * @return
     */
    private static Map xml2mapWithAttr(Element element) {
        Map<String, Object> map = new LinkedHashMap<String, Object>();

        List<Element> list = element.elements();
        List<Attribute> listAttr0 = element.attributes(); // 当前节点的所有属性的list
        for (Attribute attr : listAttr0) {
            map.put("@" + attr.getName(), attr.getValue());
        }
        if (list.size() > 0) {

            for (int i = 0; i < list.size(); i++) {
                Element iter = list.get(i);
                List mapList = new ArrayList();

                if (iter.elements().size() > 0) {
                    Map m = xml2mapWithAttr(iter);
                    if (map.get(iter.getName()) != null) {
                        Object obj = map.get(iter.getName());
                        if (!(obj instanceof List)) {
                            mapList = new ArrayList();
                            mapList.add(obj);
                            mapList.add(m);
                        }
                        if (obj instanceof List) {
                            mapList = (List) obj;
                            mapList.add(m);
                        }
                        map.put(iter.getName(), mapList);
                    } else
                        map.put(iter.getName(), m);
                } else {

                    List<Attribute> listAttr = iter.attributes(); // 当前节点的所有属性的list
                    Map<String, Object> attrMap = null;
                    boolean hasAttributes = false;
                    if (listAttr.size() > 0) {
                        hasAttributes = true;
                        attrMap = new LinkedHashMap<String, Object>();
                        for (Attribute attr : listAttr) {
                            attrMap.put("@" + attr.getName(), attr.getValue());
                        }
                    }

                    if (map.get(iter.getName()) != null) {
                        Object obj = map.get(iter.getName());
                        if (!(obj instanceof List)) {
                            mapList = new ArrayList();
                            mapList.add(obj);
                            // mapList.add(iter.getText());
                            if (hasAttributes) {
                                attrMap.put("#text", iter.getText());
                                mapList.add(attrMap);
                            } else {
                                mapList.add(iter.getText());
                            }
                        }
                        if (obj instanceof List) {
                            mapList = (List) obj;
                            // mapList.add(iter.getText());
                            if (hasAttributes) {
                                attrMap.put("#text", iter.getText());
                                mapList.add(attrMap);
                            } else {
                                mapList.add(iter.getText());
                            }
                        }
                        map.put(iter.getName(), mapList);
                    } else {
                        // map.put(iter.getName(), iter.getText());
                        if (hasAttributes) {
                            attrMap.put("#text", iter.getText());
                            map.put(iter.getName(), attrMap);
                        } else {
                            map.put(iter.getName(), iter.getText());
                        }
                    }
                }
            }
        } else {
            // 根节点的
            if (listAttr0.size() > 0) {
                map.put("#text", element.getText());
            } else {
                map.put(element.getName(), element.getText());
            }
        }
        return map;
    }