XML字符串和XML Document之间的转换

一， 使用JDOM

  1.字符串转Document对象

String xmlStr = ".....";
StringReader sr = new StringReader(xmlStr);
InputSource is = new InputSource(sr);
Document doc = (new SAXBuilder()).build(is);

  2.Document对象转字符串

Format format = Format.getPrettyFormat();
format.setEncoding("gb2312");//设置xml文件的字符为gb2312，解决中文问题
XMLOutputter xmlout = new XMLOutputter(format);
ByteArrayOutputStream bo = new ByteArrayOutputStream();
xmlout.output(doc,bo);
String xmlStr = bo.toString();

 _{注：Document为org.jdom.Document}

 

二， 使用最原始的javax.xml.parsers，标准的jdk api

  1.字符串转Document对象

String xmlStr = "......";
StringReader sr = new StringReader(xmlStr); 
InputSource is = new InputSource(sr); 
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 
DocumentBuilder builder=factory.newDocumentBuilder(); 
Document doc = builder.parse(is);

  2.Document对象转字符串

TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
t.setOutputProperty("encoding","GB23121");//解决中文问题，试过用GBK不行
ByteArrayOutputStream bos = new ByteArrayOutputStream();
t.transform(new DOMSource(doc), new StreamResult(bos));
String xmlStr = bos.toString();

 _{注：Document为org.w3c.dom.Document}

 

三， 使用dom4j(这是最简单的方法)

  1.字符串转Document对象

String xmlStr = "......";
Document document = DocumentHelper.parseText(xmlStr);

  2.Document对象转字符串

Document document = ...;
String text = document.asXML();

 _{注：Document为org.dom4j.Document}

 

四，在JavaScript中的处理

 1.字符串转Document对象

var xmlStr = ".....";
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.loadXML(xmlStr);
//可以处理这个xmlDoc了
var name = xmlDoc.selectSingleNode("/person/name");
alert(name.text);

  2.Document对象转字符串

var xmlDoc = ......;
var xmlStr = xmlDoc.xml

参考资料： http://yangfei520.blog.51cto.com/1041581/382977