[JAVA] XML 데이터를 String으로 변환하는 방법 / XML to String

 

 

 

 

XML 데이터를 String으로 변환하는 방법이 잘 정리 되있길래 정리해본다.

 

 

샘플코드

package app.model.com;

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

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.xml.sax.InputSource;

public class XMLtoString {

	public static void main(String[] args) throws IOException {
		/**
		 * 샘플용 XML문자열
		 */
		final String xmlStr = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"+
                "<Emp id=\"1\"><name>Pankaj</name><age>25</age>\n"+
                "<role>Developer</role><gen>Male</gen></Emp>";
		/**
		 * xmlStr을 Document으로 변환하는 convertStringToDocument 함수 호출
		 */
		Document doc = convertStringToDocument(xmlStr);
		
		/**
		 * document를 String으로 변환하는 convertDocumentToString 함수 호출
		 */
		String str = convertDocumentToString(doc);
		System.out.println(str.getClass().getName());
		System.out.println(str);
		
	}
	
    private static String convertDocumentToString(Document doc) {
        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer transformer;
        try {
            transformer = tf.newTransformer();
            StringWriter writer = new StringWriter();
            transformer.transform(new DOMSource(doc), new StreamResult(writer));
            String output = writer.getBuffer().toString();
            return output;
        } catch (TransformerException e) {
            e.printStackTrace();
        }
        return null;
    }
    
    private static Document convertStringToDocument(String xmlStr) {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();  
        DocumentBuilder builder;  
        try  
        {  
            builder = factory.newDocumentBuilder();  
            Document doc = builder.parse( new InputSource( new StringReader( xmlStr ) ) ); 
            return doc;
        } catch (Exception e) {  
            e.printStackTrace();  
        } 
        return null;
    }

}

 

 

결과화면

 

어려운 거 없고, 그냥 위의 함수를 조금 활용해서 잘 쓰면 될 거 같다. 너무 정리가 잘되어 있어서 그냥 가져옴..

 

 

 

참조 : Java Convert String to XML Document and XML Document to String