java string转为xml

    一、使用最原始的javax.xml.parsers，标准的jdk api  

    // 字符串转XML
    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);  

    //XML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();  

    这里的XML DOCUMENT为org.w3c.dom.Document  

    　　二、使用dom4j后程式变得更简单  

    // 字符串转XML
    String xmlStr = \"......\";
    Document document = DocumentHelper.parseText(xmlStr);  

    // XML转字符串
    Document document = ...;
    String text = document.asXML();  

    这里的XML DOCUMENT为org.dom4j.Document  

    　　三、使用JDOM  

    JDOM的处理方式和第一种方法处理很类似  

    //字符串转XML
    String xmlStr = \".....\";
    StringReader sr = new StringReader(xmlStr);
    InputSource is = new InputSource(sr);
    Document doc = (new SAXBuilder()).build(is);  

    //XML转字符串
    Format format = Format.getPrettyFormat();
    format.setEncoding(\"gb2312\");//配置xml文档的字符为gb2312，解决中文问题
    XMLOutputter xmlout = new XMLOutputter(format);
    ByteArrayOutputStream bo = new ByteArrayOutputStream();
    xmlout.output(doc,bo);
    String xmlStr = bo.toString();  

    这里的XML DOCUMENT为org.jdom.Document  

    　　四、JAVASCRIPT中的处理  

    //字符串转XML
    var xmlStr = \".....\";
    var xmlDoc = new ActiveXObject(\"Microsoft.XMLDOM\");
    xmlDoc.async=false;
    xmlDoc.loadXML(xmlStr);
    //能够处理这个xmlDoc了
    var name = xmlDoc.selectSingleNode(\"/person/name\");
    alert(name.text);  

    //XML转字符串
    var xmlDoc = ......;
    var xmlStr = xmlDoc.xml  

    这里的XML DOCUMENT为javascript版的XMLDOM