com.alibaba.nacos.spring.util.parse.DefaultXmlConfigParse Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.nacos.spring.util.parse;

import java.io.ByteArrayInputStream;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import javax.xml.parsers.DocumentBuilderFactory;

import org.springframework.util.StringUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import com.alibaba.nacos.api.config.ConfigType;
import com.alibaba.nacos.spring.util.AbstractConfigParse;

/*

    
        
            lct-1
            1006010022
            major-1
            hangzhou
            123456
        
        
            lct-2
            1006010033
            major-2
            shengzheng
            234567
        
        
            lct-3
            1006010044
            major-3
            wenzhou
            345678
        
        
            lct-4
            1006010055
            major-3
            wuhan
            456789
        
    

 */
/**
 * Just support xml config like this
 *
 * @author liaochuntao
 * @since 0.3.0
 */
public class DefaultXmlConfigParse extends AbstractConfigParse {

	private DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

	@Override
	public Map parse(String configText) {
		Map properties = new LinkedHashMap(8);
		try {
			Document document = factory.newDocumentBuilder()
					.parse(new ByteArrayInputStream(configText.getBytes("UTF-8")));
			Element root = document.getDocumentElement();
			Map map = new LinkedHashMap(8);
			recursionXmlToMap(map, root);
			mapToProperties("", properties, map);
		}
		catch (Exception e) {
			throw new ConfigParseException(e);
		}
		return properties;
	}

	private void recursionXmlToMap(Map outMap, Element element) {
		NodeList nodeList = element.getChildNodes();
		String name = element.getNodeName();
		if (nodeList.getLength() == 1 && !nodeList.item(0).hasChildNodes()) {
			addData(outMap, name, element.getTextContent());
		}
		else {
			Map innerMap = new LinkedHashMap(1);
			int length = nodeList.getLength();
			for (int i = 0; i < length; i++) {
				Node node = nodeList.item(i);
				if (node.getNodeType() == Node.ELEMENT_NODE) {
					Element tElement = (Element) node;
					recursionXmlToMap(innerMap, tElement);
				}
			}
			addData(outMap, name, innerMap);
		}
	}

	private void addData(Map map, String key, Object data) {
		if (map.containsKey(key)) {
			if (map.get(key) instanceof List) {
				((List) map.get(key)).add(data);
			}
			else {
				List