格式化xml

在程序代码开发过程中，我们可能有时候需要将xml报文进行格式化一下，整理了一下，大概有两种方法：

 public String formatXml(String inputXml){
         SAXReader reader = new SAXReader();
         XMLWriter writer = null;
         String requestXml = null;
         try {
             Document document = reader.read(new StringReader(inputXml));
             if(document!=null){
                 StringWriter stringWriter = new StringWriter();
                 OutputFormat format = new OutputFormat(" ", true);
                 format.setEncoding("GBK");
                 format.setNewLineAfterDeclaration(false);//设置不存在空行
                 writer = new XMLWriter(stringWriter, format);
                 writer.write(document);
                 writer.flush();
                 requestXml = stringWriter.getBuffer().toString();
             }
         } catch (IOException e) {
             e.printStackTrace();
         } catch (DocumentException e) {
             e.printStackTrace();
         }finally{
             if(writer!=null){
                 try {
                     writer.close();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             }
         }
         return requestXml;
     }

     public void formatXml2(String inputXml){
         Format format = Format.getCompactFormat();
         format.setEncoding("UTF-8");
         format.setIndent(" ");
         XMLOutputter outputter = new XMLOutputter(format);
         org.jdom.Document document=null;
         try {
             ByteArrayOutputStream bo = new ByteArrayOutputStream();
             StringReader reader = new StringReader(inputXml);
             document = (new SAXBuilder()).build(reader);
             outputter.output(document, bo);
             System.out.println(bo.toString());
         } catch (JDOMException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }