# 衝突處理 org.w3c.dom

**org.w3c.dom 衝突 錯誤訊息**

The package org.w3c.dom is accessible from more than one module: <unnamed>, java.xml

path 1:
jre 11.0.9.11 -> java.xml -> org.w3c.dom.*

path 2:
jaxen-1.1.6.jar -> org.w3c.dom.*

path 3:
dom-2.3.0-jaxb-1.0.6.jar -> org.w3c.dom.*

查找後三處有相同的 module，刪除不需要的 Build path 到只剩下一組即可。

**衍伸問題**

Dom4j 解析 xml 發生錯誤，如下:

java.lang.NoClassDefFoundError: org.jaxen.NamespaceContext

故添加 jaxen-1.1.6.jar。

但會有 org.w3c.dom 衝突，刪除 jaxen-1.1.6.jar 後，
改使用 java.xml 解析。

### 原程式碼

	// 取設定檔屬性Map
	public static HashMap<String, String> XMLMap(String strType) throws Exception {
		HashMap<String, String> mapXML = new HashMap<String, String>();
		// 取得程式當前路徑
		String strDir = System.getProperty("user.dir");
		strDir = strDir.replace("\\", "/") + "/";
		// 讀取properties.xml放入MAP
		SAXReader saxReader = new SAXReader();
		Document doc = saxReader.read(strDir + "properties.xml");
		List<?> listData = doc.selectNodes("properties/propertie[@name='" + strType + "']/item");
		for (Object oData : listData) {
			Element eElement = (Element) oData;
			mapXML.put(eElement.attributeValue("key"), eElement.attributeValue("value"));
		}
		return mapXML;
	}

### 修改為

	// 取設定檔屬性Map
	public static HashMap<String, String> XMLMap(String strType) throws Exception {
		HashMap<String, String> mapXML = new HashMap<String, String>();
		// 取得程式當前路徑
		String strDir = System.getProperty("user.dir");
		File file = new File(strDir + "\\properties.xml");
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = factory.newDocumentBuilder(); // 建立解析器
		Document doc = builder.parse(file);
		XPath xPath = XPathFactory.newInstance().newXPath();
		String expression = "/properties/propertie[@name='" + strType + "']/item"; // 路徑
		NodeList nl = (NodeList) xPath.compile(expression).evaluate(doc, XPathConstants.NODESET);

		// 讀取properties.xml放入MAP
		for (int i = 0; i < nl.getLength(); i++) {
			Node node = nl.item(i);
			Element element = (Element) node;
			mapXML.put(element.getAttribute("key"), element.getAttribute("value"));
		}
		return mapXML;
	}

[reference](/GXst1iw_TYeZNaAaX1QAdw)

###### tags: `Java`