XMl各种格式转换功能代码

/**

 * dom4j解析xml
 */

public static org.dom4j.Document xmlTodDocDom4j(String path){

    File file = new File(path);

    org.dom4j.Document doc = null;

    try {

         doc = new SAXReader().read(file);

    } catch (DocumentException e) {

        e.printStackTrace();

    }

    return doc;

}

public static String docToString(org.dom4j.Document document){

    String xmlStr = document.asXML();

    return xmlStr;

}

public static org.dom4j.Document stringToXmlDom4j(String xmlStr){

    org.dom4j.Document doc = null;

    try {

        doc = DocumentHelper.parseText(xmlStr);

    } catch (DocumentException e) {

        e.printStackTrace();

    }

    return doc;

}

 /** 

 * Document 保存为 XML 文件 
 *  
 * @param doc Document对象 
 * @param path 文件路径 
 */  
public static void doc2XMLDom4j(org.dom4j.Document doc, String path) {  
    try {  
        XMLWriter xmlWriter = new XMLWriter(new FileWriter(path));
        xmlWriter.write(doc);
        xmlWriter.flush();  
        xmlWriter.close();  
    } catch (Exception e) {  
        return;  
    }  
}  

/**

 * jdom解析xml
 */

public static org.jdom2.Document xmlTodDocJdom(String path){

    File file = new File(path);

    org.jdom2.Document doc = null;

    try {

         doc =new SAXBuilder().build(file);

    } catch (Exception e) {

        e.printStackTrace();

    }

    return doc;

}

public static String docToString(org.jdom2.Document doc){

    String xmlStr = "";

    Format format = Format.getPrettyFormat();      

    format.setEncoding("UTF-8");//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();     

    try {

        xmlout.output(doc,bo);

    } catch (IOException e) {

        e.printStackTrace();

    }      

    xmlStr = bo.toString();

return xmlStr;

}

public static org.jdom2.Document stringTodDocJdom (String xmlStr){

        org.jdom2.Document doc = null;

        StringReader sr = new StringReader(xmlStr);     

        InputSource is = new InputSource(sr);     

        try {

            doc =(new SAXBuilder()).build(is);

        } catch (Exception e) {

            e.printStackTrace();

        } 

    return doc;

}

 /** 

 * DOCUMENT格式化输出保存为XML 
 *  
 * @param doc JDOM的Document 
 * @param filePath 输出文件路径 
 * @throws Exception 
 */  
public static void doc2XML(org.jdom2.Document doc, String filePath) throws Exception{  
    Format format = Format.getCompactFormat();   
    format.setEncoding("UTF-8"); //设置XML文件的字符为UTF-8  
    format.setIndent("     ");//设置缩进   
    XMLOutputter outputter = new XMLOutputter(format);//定义输出 ,在元素后换行，每一层元素缩排四格   
    FileWriter writer = new FileWriter(filePath);//输出流  
    outputter.output(doc, writer);  
    writer.close();  
}  

/**

 * jdk api解析xml
 */

public static Document xmlTodDoc(String path){

    File file = new File(path);

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();  

    DocumentBuilder builder = null;  

    Document doc = null;

    try {

        builder = factory.newDocumentBuilder();

        doc = builder.parse(file);

    } catch (Exception e) {

        e.printStackTrace();

    }

    return doc;

}

public static String xmlToString(Document doc){

        String xmlStr = "";

        TransformerFactory  tf  =  TransformerFactory.newInstance();    

        Transformer t;

        try {

            t = tf.newTransformer();

            ByteArrayOutputStream  bos  =  new  ByteArrayOutputStream();   

            t.transform(new DOMSource(doc), new StreamResult(bos));    

            xmlStr = bos.toString();    

        } catch (Exception e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }    

    return xmlStr;

}

public static Document stringToXml(String xmlStr){

        Document doc = null;

        StringReader sr = new StringReader(xmlStr);   

        InputSource is = new InputSource(sr);   

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();   

        DocumentBuilder builder;

        try {

            builder = factory.newDocumentBuilder();

            doc = builder.parse(is);  

        } catch (Exception e) {

            e.printStackTrace();

        }    

    return doc;

}

 /** 

 * Document 保存为 XML 文件 
 *  
 * @param doc Document对象 
 * @param path 文件路径 
 */  
public static void doc2XML(Document doc, String path) {  
    try {  
        Source source = new DOMSource(doc);  
        Result result = new StreamResult(new File(path));  
        Transformer transformer = TransformerFactory.newInstance().newTransformer();  
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");  
        transformer.transform(source, result);  
    } catch (Exception e) {  
        return;  
    }  
}  

    System.out.println(element.getName());

    List<org.dom4j.Element> iter = element.elements();

    for (org.dom4j.Element elem : iter) {

        System.out.println(elem.getName());

        if(elem.getName().equals("HeadInfo")){

            System.out.println(elem.attributeValue("PGMVersion"));

        };

        if(elem.getName().equals("PGM")){

            List<org.dom4j.Element> subIter = elem.elements();

            for (org.dom4j.Element el : subIter) {

                System.out.println(el.getName());

                System.out.println(el.attributeValue("ItemType"));

                if(el.attributeValue("ItemType").equals("1")){

                    List<org.dom4j.Element> subEl = el.elements();

                    for (org.dom4j.Element e : subEl) {

                        System.out.println(e.getName());

                    }

                }

            }

        }

    }