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Java Dom4j XML用法总结

时间:2015-07-23 13:32:25      阅读:102      评论:0      收藏:0      [点我收藏+]

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1、新建XML文档:

             Document doc = DocumentHelper.createDocument();
            Element root = doc.addElement( "ocs");
            root.addElement( "header");
            Element body = root.addElement( "body");
            Element fontnode = body.addElement( "font");
            fontnode.addAttribute( "size", "9");
            System. out.println(root.asXML());
 
2、打开现有XML文档(从字符串导入):
           Document doc = DocumentHelper.parseText(XMLStr);
            Node node = doc.selectSingleNode( "ocs/body/font");    
             if (node instanceof Element)
            {
                  Element pnode = (Element) node;           
                  Attribute attr = pnode.attribute( "size");
                  System. out.println(attr.asXML());
            }
 
          Dom4j中内置了XPath,因此可以在selectSingleNode中象XPath那样访问路径字符串;
          注意:需要引用jaxen-1.1.1.jar包,否则selectSingleNode会产生异常并返回Null;
 
3、打开现有文档(从文件导入):
          SAXReader saxReader = new SAXReader();
          Document document = saxReader.read( XMLFile);
 
4、将Document写入到文件中:
          try
            {
                  XMLWriter output = new XMLWriter( new FileWriter( new File(XMLFile)));
                  output.write( doc);
                  output.close();
            } catch (IOException e)
            {
                  System. out.println(e.getMessage());
            }

Java Dom4j XML用法总结

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原文地址:http://www.cnblogs.com/laoxia/p/4670080.html

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