자바 xml 포맷 출력

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

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

public class DebugUtil {

	public static String formatXML(Document doc) throws Exception {
        StringWriter out=null;
        try{
            OutputFormat formate=OutputFormat.createPrettyPrint();
            out=new StringWriter();
            XMLWriter writer=new XMLWriter(out,formate);
            writer.write(doc);
        } catch (IOException e){
           e.printStackTrace();
        } finally{
            out.close(); 
        }
        return out.toString();
	}
}