xml解析

Document documentO = DocumentHelper.parseText(xml);
Element rootO = documentO.getRootElement();

String OrderNo = rootO.elementText("OrderNo");//单节点

List<Element> orderList=root2.selectNodes("//ChangeOrders/ChangeOrder");//有父节点

for(Element e : orderList){

String ChangeCost=e.elementText("ChangeCost");

}