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import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
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          SAXBuilder builder=new SAXBuilder(false); Õâ±íʾʹÓõÄÊÇĬÈϵĽâÎöÆ÷
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          Document
doc=builder.build(xmlpath);
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          Element
books=doc.getRootElement();
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        List booklist=books.getChildren("book");
Õâ±íʾµÃµ½“books”ÔªËصÄËùÔÚÃû³ÆΪ“book”µÄÔªËØ£¬²¢°ÑÕâЩԪËض¼·Åµ½Ò»¸öList¼¯ºÏÖÐ
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       for (Iterator iter = booklist.iterator();
iter.hasNext();) {
         Element book = (Element)
iter.next();
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      for(int i=0;I<booklist.size();I++){
        Element
book=(Element)booklist.get(i);
      }
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      String
email=book.getAttributeValue("email");
     È¡µÃÔªËØbookµÄÊôÐÔÃûΪ“email”µÄÊôÐÔÖµ¡£
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      String
name=book.getChildTextTrim("name");
      ×¢ÒâµÄÊÇ£¬±ØÐëÈ·¶¨bookÔªËصÄÃûΪ“name”µÄ×ÓÔªËØÖ»ÓÐÒ»¸ö¡£
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book.getChild("name").setText("alterrjzjh");
      ÕâÖ»ÊǶÔDocumentµÄÐ޸ģ¬²¢Ã»ÓÐÔÚʵ¼ÊµÄXMLÎĵµÖнøÐÐÐÞ¸Ä
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(1) XmlNode node = doc.selectSingleNode("//AllNode/Node[@ID = ’aaa’]");
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