org.dom4j.Document相關操做api

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.apache.commons.io.IOUtils;
import org.dom4j.Node;
import org.doom4j.DocumentHelper;

//文件流InputStream 轉Document,轉Element

public Element parseXml(InputStream stream){
   SAXReader reader=new SAXReader();
   Document document;
      try {
      document = reader.read(stream);
      Element root=document.getRootElement();//Element爲根結點
      return root;
   } catch (DocumentException e) {
      throw new RuleException(e);
   }
}

//文件流InputStream 轉 XMl格式文件
String xml = IOUtils.toString(inputStream,"utf-8");

//Document 轉 InputStream
InputStream stream = IOUtils.toInputStream(document.asXML())

//Document 直接根據Element解析
Document doc = new Document();//
List<Element> oldEls =  doc.getRootElement().elements();//得到Element集合後進行其餘操做

//Document轉 Xml格式文件
Document doc = new Document();//實際狀況 doc可根據其餘方式得到
String xml = doc.asXML();

//Xml 轉Document對象Document doc = DocumentHelper.parseText(xml);//Elemnt 轉XMlElement element ;Document doc = element.getDocument();String xml = doc.asXML();