写入到xml文件的排版问题

2013-10-04 02:07:06 535 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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 boolean exist = file.exists();

		DocumentBuilderFactory domFactory = DocumentBuilderFactory

				.newInstance();

		domFactory.setIgnoringComments(true);

		DocumentBuilder builder = domFactory.newDocumentBuilder();

		Document doc = null;

		if (exist) {

			doc = builder.parse(file);

		} else {

			doc = builder.newDocument();

			Element root = doc.createElement("Log");

			doc.appendChild(root);

		}

		Element logTag = doc.createElement("LogTag");

		Element timeValue = doc.createElement("Time");

		Element msgValue = doc.createElement("Message");

		Text time = doc.createTextNode(param.createTime);

		Text message = doc.createTextNode(param.logMessage);

		timeValue.appendChild(time);

		msgValue.appendChild(message);

		logTag.appendChild(timeValue);

		logTag.appendChild(msgValue);

		doc.getDocumentElement().appendChild(logTag);



		if (!exist) {

			TransformerFactory transformerFactory = TransformerFactory

					.newInstance();

			// step10:获得一个Transformer对象

			Transformer transformer = transformerFactory.newTransformer();

			// step11:把document对象用一个DOMSource对象包装起来

			Source xmlSource = new DOMSource(doc);

			// step12:建立一个存储目标对象

			Result outputTarget = new StreamResult(file);

			// step13:生成相应的xml文件

			transformer.transform(xmlSource, outputTarget);

		}else{

			DOMSource source = new DOMSource(doc);



	        TransformerFactory transformerFactory = TransformerFactory.newInstance();

	        Transformer transformer = transformerFactory.newTransformer();

	        StreamResult result = new StreamResult(file.getAbsolutePath());

	        transformer.transform(source, result);

		}