XML和实体类的转换

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 XmlUtils {

	/**
	 * 将XML转为实体
	 * @param xml
	 * @param c
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public static <T>T jaxbxml2bean(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;
	}
	
	 /** 
     * JavaBean转换成xml 
     * @param obj 
     * @return  
     */  
    public static String bean2xml(Object obj) {  
        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, "UTF-8");  
  
            StringWriter writer = new StringWriter();  
            marshaller.marshal(obj, writer);  
            result = writer.toString();  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
  
        return result;  
    } 
	
}