XML工具类，提供序列化XML、反序列化XML、获取指定节点的值的方法。
源码如下：(点击下载 - XmlUtils.java、
dom4j-1.6.1.jar
、xstream-1.4.7.jar )
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import com.thoughtworks.xstream.XStream; /**
* XML工具类
*
*/
public class XmlUtils { private final static String XML_DECLARATION = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"; private XmlUtils() {
} /**
* 序列化XML
*
* @param obj
* @param clazz
* @return
*/
public static <T> String toXML(Object obj) {
XStream stream = getXStream();
stream.processAnnotations(obj.getClass());
return new StringBuffer(XML_DECLARATION).append(stream.toXML(obj)).toString();
} /**
* 反序列化XML
*
* @param xmlStr
* @param clazz
* @return
*/
public static <T> T fromXML(String xmlStr, Class<T> clazz) {
XStream stream = getXStream();
stream.processAnnotations(clazz);
Object obj = stream.fromXML(xmlStr);
try {
return clazz.cast(obj);
} catch (ClassCastException e) {
return null;
}
} /**
* 获取指定节点的值
*
* @param xpath
* @param params
* @return
*/
public static String getNodeValue(String xpath, String dataStr) {
try {
// 将字符串转为xml
Document document = DocumentHelper.parseText(dataStr);
// 查找节点
Element element = (Element) document.selectSingleNode(xpath);
if (element != null) {
return element.getStringValue();
}
} catch (DocumentException e) {
e.printStackTrace();
}
return "";
} /**
* 获取Xstream实例
*
* @return
*/
public static XStream getXStream() {
return new XStream();
}
}