Java Document (xml)对象转String

(9条消息) Java Document对象转String_weixin_33860147的博客-CSDN博客

 Code1

package com.project.util;
 
import java.io.IOException;
import java.io.StringWriter;
 
import org.apache.log4j.Logger;
import org.w3c.dom.Document;
 
import com.sun.org.apache.xml.internal.serialize.OutputFormat;
import com.sun.org.apache.xml.internal.serialize.XMLSerializer;
 
public class DocumentUtil {
 
	public static Logger log = Logger.getLogger(DocumentUtil.class.getClass());
	
	/**
	 * Document 转换为 String 并且进行了格式化缩进
	 * 
	 * @param doc XML的Document对象
	 * @return String
	 */
	public static String doc2FormatString(Document doc) {	
		String docString = "";
		if(doc != null){
			StringWriter stringWriter = new StringWriter();
			try{
				OutputFormat format = new OutputFormat(doc,"UTF-8",true);
				//format.setIndenting(true);//设置是否缩进，默认为true
				//format.setIndent(4);//设置缩进字符数
				//format.setPreserveSpace(false);//设置是否保持原来的格式,默认为 false
				//format.setLineWidth(500);//设置行宽度
				XMLSerializer serializer = new XMLSerializer(stringWriter,format);
				serializer.asDOMSerializer();
				serializer.serialize(doc);
				docString = stringWriter.toString();
			}catch(Exception e){
				e.printStackTrace();
			}finally{
				if(stringWriter != null){
		        	try {
						stringWriter.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
	        	}
			}
		}
		log.error("XML内容："+docString);
		return docString;
	}
	
}

 Code2:

/**
	 * org.w3c.dom.Document 转换为 String
	 * 
	 * @param org.w3c.dom.Document对象
	 * @return String
	 */
	public static String docToString(Document doc) {
		String docStr = "";
		if(doc!=null){
			try{
				TransformerFactory transformerFactory = TransformerFactory.newInstance();                
				Transformer transformer = transformerFactory.newTransformer();                
				transformer.setOutputProperty("encoding", "UTF-8");                
				ByteArrayOutputStream outputStream = new ByteArrayOutputStream();                
				transformer.transform(new DOMSource(doc), new StreamResult(outputStream));                
				//docStr = outputStream.toString();
				docStr = outputStream.toString("UTF-8");
				System.out.println("\n**********************     【org.w3c.dom.Document对象转XML字符串内容：】       **********************\n"+docStr);
			}catch(Exception e){
				e.printStackTrace();
			}
		}
		return docStr;
	}

String 转 Document

org.w3c.dom document 和xml 字符串 互转 - Sharpest - 博客园 (cnblogs.com)

/**
* 将传入的一个XML String转换成一个org.w3c.dom.Document对象返回。
*
* @param xmlString
* 一个符合XML规范的字符串表达。
* @return a Document
*/
public static Document parseXMLDocument(String xmlString) {
if (xmlString == null) {
throw new IllegalArgumentException();
}
try {
return newDocumentBuilder().parse(
new InputSource(new StringReader(xmlString)));
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}