Java Code Examples for org.dom4j.io.XMLWriter

/**
* 
* @Title: close 
* @Description: Close writer 
* @param @param w 
* @return void
* @throws
 */
public static void close(XMLWriter xw)
{
    if (null == xw)
    {
        return;
    }
    try
    {
        xw.close();
        xw = null;
    }
    catch(IOException e)
    {
        FormatView.getView().getStat().setText("Failed to close writer: " + e.getMessage());
    }
}
 

/**
 * Get the writer for the import file
 * 
 * @param destination	the destination XML import file
 * @return				the XML writer
 */
private XMLWriter getWriter(String destination)
{
	try
	{
		 // Define output format
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setNewLineAfterDeclaration(false);
        format.setIndentSize(INDENT_SIZE);
        format.setEncoding(this.fileEncoding);

        return new XMLWriter(new FileOutputStream(destination), format);
	}
       catch (Exception exception)
       {
       	throw new AlfrescoRuntimeException("Unable to create XML writer.", exception);
       }
}
 

public void doWork(XmlPullParser reader, XMLWriter writer)
	throws Exception
{
	// Deal with the contents of the tag
	int eventType = reader.getEventType();
	while (eventType != XmlPullParser.END_TAG) 
       {
		eventType = reader.next();
		if (eventType == XmlPullParser.START_TAG) 
		{
			ImportFileUpdater.this.outputCurrentElement(reader, writer, new OutputChildren());
		}
		else if (eventType == XmlPullParser.TEXT)
		{
			// Write the text to the output file
			writer.write(reader.getText());
		}
       }			
}
 

/**
 * Start the transfer report
 */
public void startTransferReport(String encoding, Writer writer)
{
    OutputFormat format = OutputFormat.createPrettyPrint();
    format.setNewLineAfterDeclaration(false);
    format.setIndentSize(3);
    format.setEncoding(encoding);
    
    try 
    {
    
    this.writer = new XMLWriter(writer, format);
    this.writer.startDocument();
    
    this.writer.startPrefixMapping(PREFIX, TransferDestinationReportModel.TRANSFER_REPORT_MODEL_1_0_URI);

    // Start Transfer Manifest  // uri, name, prefix
    this.writer.startElement(TransferDestinationReportModel.TRANSFER_REPORT_MODEL_1_0_URI, TransferDestinationReportModel.LOCALNAME_TRANSFER_DEST_REPORT,  PREFIX + ":" + TransferDestinationReportModel.LOCALNAME_TRANSFER_DEST_REPORT, EMPTY_ATTRIBUTES);
    
    } 
    catch (SAXException se)
    {
        se.printStackTrace();
    }
}
 

/**
 * Start the transfer manifest
 */
public void startTransferManifest(Writer writer) throws SAXException
{
    format = OutputFormat.createPrettyPrint();
    format.setNewLineAfterDeclaration(false);
    format.setIndentSize(3);
    format.setEncoding("UTF-8");

    this.writer = new XMLWriter(writer, format);
    this.writer.startDocument();

    this.writer.startPrefixMapping(PREFIX, TransferModel.TRANSFER_MODEL_1_0_URI);
    this.writer.startPrefixMapping("cm", NamespaceService.CONTENT_MODEL_1_0_URI);

    // Start Transfer Manifest // uri, name, prefix
    this.writer.startElement(TransferModel.TRANSFER_MODEL_1_0_URI,
                ManifestModel.LOCALNAME_TRANSFER_MAINIFEST, PREFIX + ":"
                            + ManifestModel.LOCALNAME_TRANSFER_MAINIFEST, EMPTY_ATTRIBUTES);
}
 

/**
 * Start the transfer report
 */
public void startTransferReport(String encoding, Writer writer) throws SAXException
{
    OutputFormat format = OutputFormat.createPrettyPrint();
    format.setNewLineAfterDeclaration(false);
    format.setIndentSize(3);
    format.setEncoding(encoding);
    
    this.writer = new XMLWriter(writer, format);
    this.writer.startDocument();
    
    this.writer.startPrefixMapping(PREFIX, TransferReportModel2.TRANSFER_REPORT_MODEL_2_0_URI);

    // Start Transfer Manifest  // uri, name, prefix
    this.writer.startElement(TransferReportModel2.TRANSFER_REPORT_MODEL_2_0_URI, TransferReportModel.LOCALNAME_TRANSFER_REPORT,  PREFIX + ":" + TransferReportModel.LOCALNAME_TRANSFER_REPORT, EMPTY_ATTRIBUTES);
}
 

/**
 *  Performs XML conversion from ADN to oai_dc format. Characters are encoded as UTF-8.
 *
 * @param  xml        XML input in the 'adn' format.
 * @param  docReader  A lucene doc reader for this record.
 * @param  context    The servlet context where this is running.
 * @return            XML in the converted 'oai_dc' format.
 */
public String convertXML(String xml, XMLDocReader docReader, ServletContext context) {
	getXFormFilesAndIndex(context);
	try {
					
		Transformer transformer = XSLTransformer.getTransformer(transform_file.getAbsolutePath());
		String transformed_content = XSLTransformer.transformString(xml, transformer);
		
		SAXReader reader = new SAXReader();
		Document document = DocumentHelper.parseText(transformed_content);

		// Dom4j automatically writes using UTF-8, unless otherwise specified.
		OutputFormat format = OutputFormat.createPrettyPrint();
		StringWriter outputWriter = new StringWriter();
		XMLWriter writer = new XMLWriter(outputWriter, format);
		writer.write(document);
		outputWriter.close();
		writer.close();
		return outputWriter.toString();			
	} catch (Throwable e) {
		System.err.println("NCS_ITEMToNSDL_DCFormatConverter was unable to produce transformed file: " + e);
		e.printStackTrace();
		return "";
	}
}
 

public String transformString (String input, String transform, String tFactory) {
	try {
		File transform_file = new File (xsl_dir, transform);

		Transformer transformer = XSLTransformer.getTransformer(transform_file.getAbsolutePath(), tFactory);
		String transformed_content = XSLTransformer.transformString(input, transformer);
		
		prtln ("\ntransformer: " + transformer.getClass().getName());
		
		SAXReader reader = new SAXReader();
		Document document = DocumentHelper.parseText(transformed_content);

		// Dom4j automatically writes using UTF-8, unless otherwise specified.
		OutputFormat format = OutputFormat.createPrettyPrint();
		StringWriter outputWriter = new StringWriter();
		XMLWriter writer = new XMLWriter(outputWriter, format);
		writer.write(document);
		outputWriter.close();
		writer.close();
		return outputWriter.toString();	
	} catch (Throwable t) {
		prtln (t.getMessage());
		t.printStackTrace();
		return "";
	}
}
 

public void fileSource(HttpServletRequest req, HttpServletResponse resp) throws Exception {
	String path=req.getParameter("path");
	path=Utils.decodeURL(path);
	InputStream inputStream=repositoryService.readFile(path,null);
	String content=IOUtils.toString(inputStream,"utf-8");
	inputStream.close();
	String xml=null;
	try{
		Document doc=DocumentHelper.parseText(content);
		OutputFormat format=OutputFormat.createPrettyPrint();
		StringWriter out=new StringWriter();
		XMLWriter writer=new XMLWriter(out, format);
		writer.write(doc);
		xml=out.toString();
	}catch(Exception ex){
		xml=content;
	}
	Map<String,Object> result=new HashMap<String,Object>();
	result.put("content", xml);
	writeObjectToJson(resp, result);
}
 

/**
 * 删除配置
 *
 * @param name
 * @throws Exception
 */
public static void removeHttpConfig(String name) throws Exception {
    SAXReader reader = new SAXReader();
    File xml = new File(HTTP_CONFIG_FILE);
    Document doc;
    Element root;
    try (FileInputStream in = new FileInputStream(xml); Reader read = new InputStreamReader(in, "UTF-8")) {
        doc = reader.read(read);
        root = doc.getRootElement();
        Element cfg = (Element) root.selectSingleNode("/root/configs");
        Element e = (Element) root.selectSingleNode("/root/configs/config[@name='" + name + "']");
        if (e != null) {
            cfg.remove(e);
            CONFIG_MAP.remove(name);
        }
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setEncoding("UTF-8");
        XMLWriter writer = new XMLWriter(new FileOutputStream(xml), format);
        writer.write(doc);
        writer.close();
    }
}
 

@Override
public <R> void setResponse(R response) throws IOException {
	iResponse.setContentType("application/xml");
	iResponse.setCharacterEncoding("UTF-8");
	iResponse.setHeader("Pragma", "no-cache" );
	iResponse.addHeader("Cache-Control", "must-revalidate" );
	iResponse.addHeader("Cache-Control", "no-cache" );
	iResponse.addHeader("Cache-Control", "no-store" );
	iResponse.setDateHeader("Date", new Date().getTime());
	iResponse.setDateHeader("Expires", 0);
	iResponse.setHeader("Content-Disposition", "attachment; filename=\"response.xml\"" );
	Writer writer = iResponse.getWriter();
	try {
		new XMLWriter(writer, OutputFormat.createPrettyPrint()).write(response);
	} finally {
		writer.flush();
		writer.close();
	}
}
 

@Override
public byte[] exportXml() throws IOException {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {
        boolean anonymize = ApplicationProperty.SolverXMLExportNames.isFalse();
        boolean idconv = ApplicationProperty.SolverXMLExportConvertIds.isTrue();

        ByteArrayOutputStream ret = new ByteArrayOutputStream();
        
        Document document = createCurrentSolutionBackup(anonymize, idconv);
        
        if (ApplicationProperty.SolverXMLExportConfiguration.isTrue())
        	saveProperties(document);
        
        (new XMLWriter(ret, OutputFormat.createPrettyPrint())).write(document);
        
        ret.flush(); ret.close();

        return ret.toByteArray();
    } finally {
    	lock.unlock();
    }
}
 

protected void sendRequest(Document request) throws IOException {
    try {
        StringWriter writer = new StringWriter();
        (new XMLWriter(writer,OutputFormat.createPrettyPrint())).write(request);
        writer.flush(); writer.close();
        SessionImplementor session = (SessionImplementor)new _RootDAO().getSession();
        Connection connection = session.getJdbcConnectionAccess().obtainConnection();
        try {
            CallableStatement call = connection.prepareCall(iRequestSql);
            call.setString(1, writer.getBuffer().toString());
            call.execute();
            call.close();
        } finally {
        	session.getJdbcConnectionAccess().releaseConnection(connection);
        }
    } catch (Exception e) {
        sLog.error("Unable to send request: "+e.getMessage(),e);
    } finally {
        _RootDAO.closeCurrentThreadSessions();
    }
}
 

public String toXML(boolean pretty) {
	ByteArrayOutputStream baos = new ByteArrayOutputStream();
	try {
		OutputFormat format = new OutputFormat();
		format.setEncoding(Charsets.UTF_8.name());
		if (pretty) {
			format.setIndent(true);
	        format.setNewlines(true);
		} else {
	        format.setIndent(false);
	        format.setNewlines(false);
		}
		new XMLWriter(baos, format).write(getWrapped());
		return baos.toString(Charsets.UTF_8.name());
	} catch (Exception e) {
		throw Throwables.propagate(e);
	}
}
 

public static void updateJmx(String jmxFilePath,String csvFilePath,String csvDataXpath) throws IOException, DocumentException {
    SAXReader reader = new SAXReader();
    Document documentNew =  reader.read(new File(jmxFilePath));
    List<Element> list = documentNew.selectNodes(csvDataXpath);
    if( list.size()>1 ){
        System.out.println("报错");
    }else{
        Element e = list.get(0);
        List<Element> eList = e.elements("stringProp");
        for(Element eStringProp:eList){
            if( "filename".equals( eStringProp.attributeValue("name") ) ){
                System.out.println("==========");
                System.out.println( eStringProp.getText() );
                eStringProp.setText(csvFilePath);
                break;
            }
        }
    }

    XMLWriter writer = new XMLWriter(new FileWriter(new File( jmxFilePath )));
    writer.write(documentNew);
    writer.close();

}
 

/**
 * Output the supported lock types XML element
 * 
 * @param xml XMLWriter
 */
protected void writeLockTypes(XMLWriter xml)
{
    try
    {
        AttributesImpl nullAttr = getDAVHelper().getNullAttributes();

        xml.startElement(WebDAV.DAV_NS, WebDAV.XML_SUPPORTED_LOCK, WebDAV.XML_NS_SUPPORTED_LOCK, nullAttr);

        // Output exclusive lock
        // Shared locks are not supported, as they cannot be supported by the LockService (relevant to ALF-16449).
        writeLock(xml, WebDAV.XML_NS_EXCLUSIVE);

        xml.endElement(WebDAV.DAV_NS, WebDAV.XML_SUPPORTED_LOCK, WebDAV.XML_NS_SUPPORTED_LOCK);
    }
    catch (Exception ex)
    {
        throw new AlfrescoRuntimeException("XML write error", ex);
    }
}
 

/**
 * Generates the error tag
 * 
 * @param xml XMLWriter
 */
protected void generateError(XMLWriter xml)
{
    try
    {
        // Output the start of the error element
        Attributes nullAttr = getDAVHelper().getNullAttributes();

        xml.startElement(WebDAV.DAV_NS, WebDAV.XML_ERROR, WebDAV.XML_NS_ERROR, nullAttr);
        // Output error
        xml.write(DocumentHelper.createElement(WebDAV.XML_NS_CANNOT_MODIFY_PROTECTED_PROPERTY));

        xml.endElement(WebDAV.DAV_NS, WebDAV.XML_ERROR, WebDAV.XML_NS_ERROR);
    }
    catch (Exception ex)
    {
        // Convert to a runtime exception
        throw new AlfrescoRuntimeException("XML processing error", ex);
    }
}
 

/**
 * 打印XML
 *
 * @param document
 */
protected void printXML(Document document) {
    if (log.isInfoEnabled()) {
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setExpandEmptyElements(true);
        format.setSuppressDeclaration(true);
        StringWriter stringWriter = new StringWriter();
        XMLWriter writer = new XMLWriter(stringWriter, format);
        try {
            writer.write(document);
            log.info(stringWriter.toString());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
 

/**
 * xml 2 string
 *
 * @param document xml document
 * @return
 */
public static String parseXMLToString(Document document) {
    Assert.notNull(document);

    OutputFormat format = OutputFormat.createPrettyPrint();
    format.setEncoding("UTF-8");
    StringWriter writer = new StringWriter();
    XMLWriter xmlWriter = new XMLWriter(writer, format);
    try {
        xmlWriter.write(document);
        xmlWriter.close();
    } catch (IOException e) {
        throw new RuntimeException("XML解析发生错误");
    }
    return writer.toString();
}
 

/**
 * Devuelve la representaci�n de un Document XML en String bien formateado
 * y con codificaci�n UTF-8.
 * @param doc Documento.
 * @return string representando el documento formateado y en UTF-8.
 */
private String documentToString(Document doc) {
    String result = null;
    StringWriter writer = new StringWriter();
    OutputFormat of = OutputFormat.createPrettyPrint();
    of.setEncoding("UTF-8");
    XMLWriter xmlWriter = new XMLWriter(writer, of);
    try {
        xmlWriter.write(doc);
        xmlWriter.close();
        result = writer.toString();
    } catch (IOException e) {
        log.error("Error escribiendo xml", e);
    }
    return result;
}
 

/**
 * doc2XmlFile
 * 将Document对象保存为一个xml文件到本地
 * @return true:保存成功  flase:失败
 * @param filename 保存的文件名
 * @param document 需要保存的document对象
 */
public static boolean doc2XmlFile(Document document,String filename)
{
   boolean flag = true;
   try{
         /* 将document中的内容写入文件中 */
         //默认为UTF-8格式，指定为"GB2312"
         OutputFormat format = OutputFormat.createPrettyPrint();
         format.setEncoding("GB2312");
         XMLWriter writer = new XMLWriter(new FileWriter(new File(filename)),format);
         writer.write(document);
         writer.close();            
     }catch(Exception ex){
         flag = false;
         ex.printStackTrace();
     }
     return flag;      
}
 

/**
 * 格式化XML
 * 
 * @param inputXML
 * @return
 * @throws Exception
 */
public static String formatXML(String inputXML) throws Exception {
	Document doc = DocumentHelper.parseText(inputXML);
	StringWriter out = null;
	if (doc != null) {
		try {
			OutputFormat format = OutputFormat.createPrettyPrint();
			out = new StringWriter();
			XMLWriter writer = new XMLWriter(out, format);
			writer.write(doc);
			writer.flush();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			out.close();
		}

		return out.toString();
	}

	return inputXML;
}
 

@Test
public void testExpandEmptyElements() throws IOException {
    Document document = DocumentHelper.createDocument();
    Element root = document.addElement("root");
    Element id = root.addElement("id");
    id.addText("1");

    root.addElement("empty");

    OutputFormat xmlFormat = new OutputFormat();
    // OutputFormat.createPrettyPrint();
    xmlFormat.setSuppressDeclaration(true);
    xmlFormat.setEncoding("UTF-8");
    // If this is true, elements without any child nodes
    // are output as <name></name> instead of <name/>.
    xmlFormat.setExpandEmptyElements(true);


    StringWriter out = new StringWriter();
    XMLWriter xmlWriter = new XMLWriter(out, xmlFormat);
    xmlWriter.write(document);
    xmlWriter.close();

    assertEquals("<root><id>1</id><empty></empty></root>", out.toString());
}
 

/**
 * Write the document based on DOM4J to the tmp file in disk
 * 
 * @param document
 *            document of SysML based on DOM4j
 * @throws IOException
 */
public static String writeTmpXmiFIle(Document document) throws IOException {
	String method = "FileHandler_writeTmpXmiFIle(): ";
	long startTime = System.currentTimeMillis();
	MyLog.info(method + "start");

	File fixedFile = FileHandler.createTempFileInOS(FIXED_FILE_NAME);
	String targetPath = fixedFile.getPath();

	XMLWriter writer = new XMLWriter(new FileWriter(targetPath));
	writer.write(document);
	writer.close();

	MyLog.info(method + "end with " + (System.currentTimeMillis() - startTime) + " millisecond");
	MyLog.info();
	
	return targetPath;
}
 

/**
 * Convert a dom4j xml document to a byte[].
 * 
 * @param document
 *            The document to convert.
 * @return A <code>byte[]</code> representation of the xml document.
 * @throws IOException
 *             If an exception occurs when converting the document.
 */
public byte[] convertDocumentToByteArray(Document document)
		throws IOException {
	ByteArrayOutputStream stream = new ByteArrayOutputStream();
	XMLWriter writer = new XMLWriter(stream);
	byte[] documentAsByteArray = null;
	try {
		writer.write(document);
	} finally {
		writer.close();
		stream.flush();
		stream.close();
	}
	documentAsByteArray = stream.toByteArray();
	return documentAsByteArray;
}
 

/**
 *  Performs XML conversion from ADN to oai_dc format. Characters are encoded as UTF-8.
 *
 * @param  xml        XML input in the 'adn' format.
 * @param  docReader  A lucene doc reader for this record.
 * @param  context    The servlet context where this is running.
 * @return            XML in the converted 'oai_dc' format.
 */
public String convertXML(String xml, XMLDocReader docReader, ServletContext context) {
	getXFormFilesAndIndex(context);
	try {
					
		Transformer transformer = XSLTransformer.getTransformer(transform_file.getAbsolutePath());
		String transformed_content = XSLTransformer.transformString(xml, transformer);
		
		SAXReader reader = new SAXReader();
		Document document = DocumentHelper.parseText(transformed_content);

		// Dom4j automatically writes using UTF-8, unless otherwise specified.
		OutputFormat format = OutputFormat.createPrettyPrint();
		StringWriter outputWriter = new StringWriter();
		XMLWriter writer = new XMLWriter(outputWriter, format);
		writer.write(document);
		outputWriter.close();
		writer.close();
		return outputWriter.toString();			
	} catch (Throwable e) {
		System.err.println("NCS_ITEMToNSDL_DCFormatConverter was unable to produce transformed file: " + e);
		e.printStackTrace();
		return "";
	}
}
 

public String transformString (String input, String transform, String tFactory) {
	try {
		File transform_file = new File (xsl_dir, transform);

		Transformer transformer = XSLTransformer.getTransformer(transform_file.getAbsolutePath(), tFactory);
		String transformed_content = XSLTransformer.transformString(input, transformer);
		prtln ("\ntransformer: " + transformer.getClass().getName());
		prtln ("tFactory: " + tFactory);
		
		SAXReader reader = new SAXReader();
		Document document = DocumentHelper.parseText(transformed_content);

		// Dom4j automatically writes using UTF-8, unless otherwise specified.
		OutputFormat format = OutputFormat.createPrettyPrint();
		StringWriter outputWriter = new StringWriter();
		XMLWriter writer = new XMLWriter(outputWriter, format);
		writer.write(document);
		outputWriter.close();
		writer.close();
		return outputWriter.toString();	
	} catch (Throwable t) {
		prtln (t.getMessage());
		t.printStackTrace();
		return "";
	}
}
 

public void testEscapeXML() throws Exception {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    OutputFormat format = new OutputFormat(null, false, "ISO-8859-2");
    format.setSuppressDeclaration(true);

    XMLWriter writer = new XMLWriter(os, format);

    Document document = DocumentFactory.getInstance().createDocument();
    Element root = document.addElement("root");
    root.setText("bla &#c bla");

    writer.write(document);

    String result = os.toString();

    Document doc2 = DocumentHelper.parseText(result);
    doc2.normalize(); 
}
 

/**
 * 修改strings.xml文件内容
 *
 * @param file    strings文件
 * @param strings 修改的值列表
 */
private void updateStrings(File file, List<Strings> strings) {
    try {
        if (strings == null || strings.isEmpty()) {
            return;
        }
        Document document = new SAXReader().read(file);
        List<Element> elements = document.getRootElement().elements();
        elements.forEach(element -> {
            final String name = element.attribute("name").getValue();
            strings.forEach(s -> {
                if (s.getName().equals(name)) {
                    element.setText(s.getValue());
                    callback("修改 strings.xml name='" + name + "' value='" + s.getValue() + "'");
                }
            });
        });
        XMLWriter writer = new XMLWriter(new FileOutputStream(file));
        writer.write(document);
        writer.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

/**
 * 修改bools.xml文件内容
 *
 * @param file  bools文件
 * @param bools 修改的值列表
 */
private void updateBools(File file, List<Bools> bools) {
    try {
        if (bools == null || bools.isEmpty()) {
            return;
        }
        Document document = new SAXReader().read(file);
        List<Element> elements = document.getRootElement().elements();
        elements.forEach(element -> {
            final String name = element.attribute("name").getValue();
            bools.forEach(s -> {
                if (s.getName().equals(name)) {
                    element.setText(s.getValue());
                    callback("修改 bools.xml name='" + name + "' value='" + s.getValue() + "'");
                }
            });
        });
        XMLWriter writer = new XMLWriter(new FileOutputStream(file));
        writer.write(document);
        writer.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

/**
 * Convert a dom4j xml document to a byte[].
 * 
 * @param document
 *            The document to convert.
 * @return A <code>byte[]</code> representation of the xml document.
 * @throws IOException
 *             If an exception occurs when converting the document.
 */
public byte[] convertDocumentToByteArray(Document document)
		throws IOException {
	ByteArrayOutputStream stream = new ByteArrayOutputStream();
	XMLWriter writer = new XMLWriter(stream);
	byte[] documentAsByteArray = null;
	try {
		writer.write(document);
	} finally {
		writer.close();
		stream.flush();
		stream.close();
	}
	documentAsByteArray = stream.toByteArray();
	return documentAsByteArray;
}
 

public void perform(TaskRequest req, TaskResponse res) {

		File f = new File((String) file.evaluate(req, res));
		if (f.getParentFile() != null) {
			// Make sure the necessary directories are in place...
			f.getParentFile().mkdirs();
		}
		
		try {
			XMLWriter writer = new XMLWriter(new FileOutputStream(f), OutputFormat.createPrettyPrint());
			writer.write((Node) node.evaluate(req, res));
		} catch (Throwable t) {
			String msg = "Unable to write the specified file:  " + f.getPath();
			throw new RuntimeException(msg, t);
		}
				
	}
 

/**方法（公共）<br>
* 名称:    save<br>
* 描述:    储存文档对象为本地文件（指定文档）<br>
* @param  doc - 指定文档
* @param  savePath - 储存路径
* @return boolean - 是否成功
*/public boolean save(Document doc,String savePath)
{
    boolean isSuccess=false;
    try
    {
        FileOutputStream output=new FileOutputStream(savePath);
        OutputFormat format=new OutputFormat("",true,"UTF-8");
        XMLWriter writer=new XMLWriter(output,format);
        writer.write(doc);
        writer.close();
        isSuccess=true;
    }
    catch(IOException ex)
    {
        isSuccess=false;
    }
    return isSuccess;
}
 

public static void main(String[] args) {
    try {
        ToolBox.configureLogging();
        StudentSectioningModel model = new StudentSectioningModel(new DataProperties());
        Assignment<Request, Enrollment> assignment = new DefaultSingleAssignment<Request, Enrollment>();
        StudentSectioningXMLLoader xmlLoad = new StudentSectioningXMLLoader(model, assignment);
        xmlLoad.setInputFile(new File(args[0]));
        xmlLoad.load();
        Document document = exportModel(assignment, model);
        FileOutputStream fos = new FileOutputStream(new File(args[1]));
        (new XMLWriter(fos, OutputFormat.createPrettyPrint())).write(document);
        fos.flush();
        fos.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

/**
 * 把hbm.xml的路径加入到cfg.xml的mapping结点
 *
 * @param cfg.xml的路径
 * @param hbm.xml的路径
 */
public static void updateHbmCfg(URL url,String hbm)
{
	try
	{
		SAXReader reader = new SAXReader();
		Document doc = reader.read(url);
		Element element = (Element)doc.getRootElement()
		.selectSingleNode("session-factory");
		
		Element hbmnode = element.addElement("mapping");
		hbmnode.addAttribute("resource", hbm);
		String filepath = url.getFile();
		if (filepath.charAt(0)=='/')
			filepath = filepath.substring(1);
		FileOutputStream outputstream = new FileOutputStream(filepath);
		XMLWriter writer = new XMLWriter(outputstream);
		writer.write(doc);
		outputstream.close();
	}
	catch (Exception e)
	{
		e.printStackTrace();
	}
}
 

public static boolean writeToXML(Document document, String tempPath) {
	try {
		// 使用XMLWriter写入，可以控制格式，经过调试，发现这种方式会出现乱码，主要是因为Eclipse中xml文件和JFrame中文件编码不一致造成的
		OutputFormat format = OutputFormat.createPrettyPrint();
		format.setEncoding(EncodingUtil.CHARSET_UTF8);
		// format.setSuppressDeclaration(true);//这句话会压制xml文件的声明，如果为true，就不打印出声明语句
		format.setIndent(true);// 设置缩进
		format.setIndent("	");// 空行方式缩进
		format.setNewlines(true);// 设置换行
		XMLWriter writer = new XMLWriter(new FileWriterWithEncoding(new File(tempPath), EncodingUtil.CHARSET_UTF8), format);
		writer.write(document);
		writer.close();
	} catch (IOException e) {
		e.printStackTrace();
		MyLogger.logger.error("写入xml文件出错！");
		return false;
	}
	return true;
}
 

/**
 * Returns the given xml document as nicely formated string.
 * 
 * @param node
 *            The xml document.
 * @return the formated xml as string.
 */
private static String formatXml(Node node) {
    OutputFormat format = OutputFormat.createPrettyPrint();
    format.setIndentSize(4);
    format.setTrimText(true);
    format.setExpandEmptyElements(true);
    
    StringWriter stringWriter = new StringWriter();
    XMLWriter xmlWriter = new XMLWriter(stringWriter, format);
    try {
        xmlWriter.write(node);
        xmlWriter.flush();
    } catch (IOException e) {
        // this should never happen
        throw new RuntimeException(e);
    }

    return stringWriter.getBuffer().toString();
}
 

private void handleMacrosNode(Element xmlChannel) throws IOException {

    for (Object attrObj : xmlChannel.elements()) {
      DefaultElement e = (DefaultElement) attrObj;

      StringWriter sw = new StringWriter();
      XMLWriter writer = new XMLWriter(sw);
      writer.write(e.elements());

      if (this.tasker.getMacros().containsKey(e.attributeValue("name"))) {
        throw new RuntimeException("Macro " + e.attributeValue("name") + " already exists in map.");
      }

      this.tasker.getMacros().put(e.attributeValue("name"), sw.toString());
      this.tasker.getMacroAttrs().put(e.attributeValue("name"), e.attributes());
    }

  }
 

@Override
public <R> void setResponse(R response) throws IOException {
	iResponse.setContentType("application/xml");
	iResponse.setCharacterEncoding("UTF-8");
	iResponse.setHeader("Pragma", "no-cache" );
	iResponse.addHeader("Cache-Control", "must-revalidate" );
	iResponse.addHeader("Cache-Control", "no-cache" );
	iResponse.addHeader("Cache-Control", "no-store" );
	iResponse.setDateHeader("Date", new Date().getTime());
	iResponse.setDateHeader("Expires", 0);
	iResponse.setHeader("Content-Disposition", "attachment; filename=\"response.xml\"" );
	Writer writer = iResponse.getWriter();
	try {
		new XMLWriter(writer, OutputFormat.createPrettyPrint()).write(response);
	} finally {
		writer.flush();
		writer.close();
	}
}
 

@Override
public byte[] exportXml() throws IOException {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {
        boolean anonymize = ApplicationProperty.SolverXMLExportNames.isFalse();
        boolean idconv = ApplicationProperty.SolverXMLExportConvertIds.isTrue();

        ByteArrayOutputStream ret = new ByteArrayOutputStream();
        
        Document document = createCurrentSolutionBackup(anonymize, idconv);
        
        if (ApplicationProperty.SolverXMLExportConfiguration.isTrue())
        	saveProperties(document);
        
        (new XMLWriter(ret, OutputFormat.createPrettyPrint())).write(document);
        
        ret.flush(); ret.close();

        return ret.toByteArray();
    } finally {
    	lock.unlock();
    }
}