Xstream解析：xml

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本文介绍了一种使用XStream库实现Java对象与XML格式数据互相转换的方法。该方法支持自定义XStream实例，去除XML中的class属性，并提供通用的转换函数。

/**
   * 将对象转换成XML
   * @author zy
   */
   public static String objToXml(Object o) {
       String xmlString = XstreamFactory.objToXml(o);
       return xmlString;
   }

   /**
   * 将XML转换成对象
   * @author zy
   */
   public static <T> T xmlToObj(String xml,Class<T> decodeType) {
       T t = XstreamFactory.xmlToObj(xml,decodeType);
       return t;

}

package ins.platform.utils;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder;
import com.thoughtworks.xstream.io.xml.XppDriver;

/**
* Xstream实例工厂
*
* @author ★<a href="mailto:huangyi@sinosoft.com.cn">HuangYi</a>
* @Company www.sinosoft.com.cn
* @Copyright Copyright (c) 2014-7-12
* @since (2014-7-12 下午03:38:23): <br>
*/
public class XstreamFactory {

   private static String xmlVersion = "<?xml version=\"1.0\" encoding=\"GBK\"?>";

   /**
   * XStream实例
   *
   * @return
   * @author ☆HuangYi(2014-7-12 下午03:42:51): <br>
   */
   public static XStream getInstance() {
       XStream stream = new XStream(new XppDriver(new XmlFriendlyNameCoder("-_","_")));
       stream.autodetectAnnotations(true);
       stream.setMode(XStream.NO_REFERENCES);
       stream.aliasSystemAttribute(null,"class");// 去掉 class属性
       return stream;
   }

   /**
   * 将对象转换成XML
   *
   * @param o
   * @return
   * @author ☆HuangYi(2014-6-22 下午02:33:00): <br>
   */
   public static String objToXml(Object o) {
       XStream stream = getInstance();
       String xmlString = xmlVersion+stream.toXML(o);
       return xmlString;
   }

   /**
   * 将XML转换成对象
   *
   * @param <T>
   * @param xml
   * @param decodeType
   * @return
   * @author ☆HuangYi(2014-6-22 下午02:54:19): <br>
   */
   @SuppressWarnings("unchecked")
   public static <T> T xmlToObj(String xml,Class<T> decodeType) {
       XStream stream = getInstance();
       stream.processAnnotations(decodeType);
       return (T)stream.fromXML(xml);
   }
}