xml与javabean互转

import java.io.StringReader;  import java.io.StringWriter;   import javax.xml.bind.JAXBContext;  import javax.xml.bind.Marshaller;  import javax.xml.bind.Unmarshaller;   public class JaxbUtil {       /**     * JavaBean转换成xml     * 默认编码UTF-8     * @param obj     * @param writer     * @return       */      public static String convertToXml(Object obj) {          return convertToXml(obj, "UTF-8");      }       /**     * JavaBean转换成xml     * @param obj     * @param encoding       * @return       */      public static String convertToXml(Object obj, String encoding) {          String result = null;          try {              JAXBContext context = JAXBContext.newInstance(obj.getClass());              Marshaller marshaller = context.createMarshaller();              marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);              marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);              marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);              StringWriter writer = new StringWriter();              marshaller.marshal(obj, writer);              result = writer.toString();          } catch (Exception e) {              e.printStackTrace();          }           return result;      }       /**     * xml转换成JavaBean     * @param xml     * @param c     * @return     */      @SuppressWarnings("unchecked")      public static <T> T converyToJavaBean(String xml, Class<T> c) {          T t = null;          try {              JAXBContext context = JAXBContext.newInstance(c);              Unmarshaller unmarshaller = context.createUnmarshaller();              t = (T) unmarshaller.unmarshal(new StringReader(xml));          } catch (Exception e) {              e.printStackTrace();          }           return t;      }  }