ServletUtil.java

package br.com.livro.util;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
public class ServletUtil {
	public static void writeXML(HttpServletResponse response,String xml) throws IOException {
		if(xml != null) {
			PrintWriter writer = response.getWriter();
			response.setContentType("application/xml;charset=UTF-8");
			writer.write(xml);
			writer.close();
		}
	}
	public static void writeJSON(HttpServletResponse response,String json) throws IOException {
		if(json != null) {
			PrintWriter writer = response.getWriter();
			response.setContentType("application/json;charset=UTF-8");
			writer.write(json);
			writer.close();
		}
	}
}