如何将xml的String字符串转化标准格式的String字符串

    最近，媳妇要做一个String串的格式化处理，一开始采用dom4j转化为Document对象的形式，结果不起作用，后来还是采用dom4j的方式，最终输出了一个规则的XML的String字符串，下面看看如何实现的。

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringWriter;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class ToolUtrils {

   /**
    * 字符串转化为XML串
    *    
    * @param str
    * @return
    * @throws Exception
    */
   public static String strChangeToXML(String str) {
    SAXReader saxReader = new SAXReader();
    Document document = null;
     try {
      document = saxReader.read( new ByteArrayInputStream(str.getBytes()));
    } catch (DocumentException e) {
      e.printStackTrace();
    }
    StringWriter writer = new StringWriter();
    OutputFormat format = OutputFormat.createPrettyPrint();
    format.setEncoding( "UFT-8");
    XMLWriter xmlwriter = new XMLWriter(writer, format);
     try {
      xmlwriter.write(document);
    } catch (IOException e) {
      e.printStackTrace();
    }
     return writer.toString();
  }

   /**
    * 测试程序文件
    *    
    * @param args
    */
   public static void main(String[] args) {
    String str = "                                   ";
    System.out.println(strChangeToXML(str));
  }
}

输出结果：

xml version ="1.0" encoding ="UFT-8" ?>

< GESInfo >
     < City id ="苏州" name ="苏州" code ="1001" >
         < Area id ="市区" name ="市区" code ="10011001" LocationSetup ="0" >
             < Place id ="观前" name ="观前" code ="100110011001" LocationSetup ="1" >
                 < Monitor id ="摄像头1" name ="摄像头1" code ="11000000000000000011200034800000" gesid ="abcde1" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
                 < Monitor id ="摄像头2" name ="摄像头2" code ="11000000000000000011200034800000" gesid ="abcde2" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />
             Place >
             < Place id ="石路" name ="石路" code ="100110011002" LocationSetup ="2" >
                 < Monitor id ="摄像头3" name ="摄像头3" code ="11000000000000000011200034800000" gesid ="abcde3" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
                 < Monitor id ="摄像头4" name ="摄像头4" code ="11000000000000000011200034800000" gesid ="abcde4" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
             Place >
         Area >
         < Area id ="园区" name ="园区" code ="10011002" LocationSetup ="0" >
             < Place id ="科技园" name ="科技园" code ="100110011003" LocationSetup ="1" >
                 < Monitor id ="摄像头5" name ="摄像头5" code ="11000000000000000011200034800000" gesid ="abcde5" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
                 < Monitor id ="摄像头6" name ="摄像头6" code ="11000000000000000011200034800000" gesid ="abcde6" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
             Place >
             < Place id ="金鸡湖" name ="金鸡湖" code ="100110011004" LocationSetup ="2" >
                 < Monitor id ="摄像头7" name ="摄像头7" code ="11000000000000000011200034800000" gesid ="abcde7" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
                 < Monitor id ="摄像头8" name ="摄像头8" code ="11000000000000000011200034800000" gesid ="abcde8" channelid ="1" VideoScan ="1" Capture ="1" ManualREC ="1" RecPlay ="1" MonControl ="1" />    
             Place >
         Area >
     City >
GESInfo >