使用XStream将xml字符串（文件）反序列化为javaBean去掉最外层（或根节点）的一种方法

可以将每层封装为类，然后使用XStream的processAnnotations函数将xml从外到内每个类添加进去，processAnnotations函数的作用是

Process the annotations of the given type and configure the XStream. A call of this method will automatically turn the auto-detection mode for annotations off.

使用fromXML函数将xml字符串当作参数传入，强转为最外层xml对应的类即可。

挂一下代码：

public class MainTest {
   public static void main(String[] args) throws BitAnswerException, ParseException {
      String xml = "<?xml version='1.0' encoding='UTF-8'?><sessionInfo timeZone='+08:00'><features sn='AAAAAAAAAAAAAAAA'><feature id='1' name='DeveloperId'type='ro' value='100654' op='0' /><feature id='2' name='鎺堟潈鐐规�绘暟' type='ro' value='15000' op='0' /><feature id='3' name='宸叉秷鑰楁巿鏉冪偣' type='rw' value='2407' op='0' /><feature id='12' name='BitKey' type='ro' value='0' endDate='2019-12-31 23:59:59' op='0' /></features></sessionInfo>";

      XStream xStream = new XStream(new DomDriver());

      xStream.processAnnotations(SessionInfoXML.class);
      xStream.processAnnotations(FeatureInfoListXml.class);

      SessionInfoXML sessionInfoXML = (SessionInfoXML) xStream.fromXML(xml);

      FeatureInfoListXml featureInfoListXml = sessionInfoXML.getFeatures();

      List<FeatureInfoXml> featureInfoXmlList = featureInfoListXml.getFeatures();

      for (FeatureInfoXml featureInfoXml : featureInfoXmlList) {
         System.out.println(featureInfoXml.getId() + "---" + featureInfoXml.getEndDate());
      }
   }
}

代码仅供参考和查看思路。

之前试了好多种方式都没有去掉xml的根节点，花了两三个小时，汗颜！

当然，也可以使用其它方法，这只是其中之一。