如何将xml的String字符串转化标准格式的String字符串（jdom)

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

import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;

public class jdomUtil {
	/**
	 * 将文件写入到xml文件中
	 * 
	 * @param doc
	 * @param filePath
	 * @param encoding
	 */
	public static String StringChangeXML(String str, String encoding) {
		SAXBuilder sb = new SAXBuilder();
		Document doc = null;
		try {
			doc = sb.build(new ByteArrayInputStream(str.getBytes()));
		} catch (JDOMException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		// 将doc中的内容写入文件中
		Format format = Format.getPrettyFormat();// 设置格式
		format.setEncoding(encoding);// 必要，否则无法解析中文
		// 输出为文件，以上操作只是在内存中修改，需要保存为文件来确认修改
		XMLOutputter outp = new XMLOutputter(format);
		return outp.outputString(doc);
	}

	/**
	 * 测试程序文件
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		String str = "<?xml version='1.0' encoding='UTF-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>";
		System.out.println(StringChangeXML(str, "UTF-8"));
	}
}

 输出结果如下：

<?xml version="1.0" encoding="UTF-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>

 

由此可见，dom4j能做的jdom也可以！