dom4j 和w3c document 的相互转换

最新推荐文章于 2021-02-17 01:33:49 发布

原创最新推荐文章于 2021-02-17 01:33:49 发布 · 1.3k 阅读

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#c #exception #null

本文介绍如何在dom4j与W3C DOM之间进行Document对象的相互转换，包括从dom4j转换到W3C DOM的方法及注意事项。

/**
        *   org.w3c.dom.Document   ->   org.dom4j.Document
        *   @param   doc   Document(org.w3c.dom.Document)
        *   @return   Document
        */
      public   static   Document   parse(org.w3c.dom.Document   doc)   throws   Exception   {
          if   (doc   ==   null)   {
              return   (null);
          }
          org.dom4j.io.DOMReader   xmlReader   =   new   org.dom4j.io.DOMReader();
          return   (xmlReader.read(doc));
      }

      /**
        *   org.dom4j.Document   ->   org.w3c.dom.Document
        *   @param   doc   Document(org.dom4j.Document)
        *   @throws   Exception
        *   @return   Document
        */
      public   static   org.w3c.dom.Document   parse(Document   doc)   throws   Exception   {
          if   (doc   ==   null)   {
              return   (null);
          }
          java.io.StringReader   reader   =   new   java.io.StringReader(doc.asXML());
          org.xml.sax.InputSource   source   =   new   org.xml.sax.InputSource(reader);
          javax.xml.parsers.DocumentBuilderFactory   documentBuilderFactory   =
                  javax.xml.parsers.DocumentBuilderFactory.newInstance();
          javax.xml.parsers.DocumentBuilder   documentBuilder   =   documentBuilderFactory.
                  newDocumentBuilder();
          return   (documentBuilder.parse(source));
      }

/**
     *
     * [功能简述] dom4j的Document转换成W3C的Document
     *
     * @param d4doc
     * @return
     */
    public static org.w3c.dom.Document toW3CDocument(org.dom4j.Document d4doc)
    {
        org.dom4j.io.DOMWriter d4Writer = new org.dom4j.io.DOMWriter();
        try
        {
            return d4Writer.write(d4doc);
        }
        catch (DocumentException e)
        {
            logger.error("can't cast dom4jDocument to W3CDocument");
            logger.error(e.getMessage());
            return null;
        }
    }