dom4j格式化xml文件

dom4j格式xml并输出为*.xml文件 

 public static void main(String[] args) {
     Document document = DocumentHelper.createDocument();
     Element employees=document.addElement("employees");
     Element employee=employees.addElement("employee");
     Element name= employee.addElement("name");
     name.setText("jim");
     Element sex=employee.addElement("sex");
     sex.setText("male");
     Element age=employee.addElement("age");
     age.setText("29");
     try {
         OutputFormat format = new OutputFormat();
         format.setIndent(true);
         format.setNewlines(true);
         Writer fileWriter=new FileWriter("F:/test.xml");
         XMLWriter xmlWriter=new XMLWriter(fileWriter,format);
         xmlWriter.write(document);
         xmlWriter.close();
     } catch (IOException e) {
         System.out.println(e.getMessage());
     }
 }

dom4j格式化xml并格式化输出 

 public static String formatXml(String str) throws DocumentException, IOException {
     SAXReader reader=new SAXReader();
     StringReader in=new StringReader(str);
     Document doc=reader.read(in);
     OutputFormat formater=OutputFormat.createPrettyPrint();
     formater.setEncoding("UTF-8");
     StringWriter out=new StringWriter();
     XMLWriter writer=new XMLWriter(out,formater);
     writer.write(doc);
     writer.close();
     return out.toString();
 }