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ʹÓÃdom4jÖÐxpath´íÎó ÎҵĴúÂëÊÇ try{         SAXReader saxReader = new SAXReader();         Document document = saxReader.read(new File(filename));         /** ÐÞ¸ÄÄÚÈÝÖ®Ò»: Èç¹ûbook½ÚµãÖÐshowÊôÐÔµÄÄÚÈÝΪyes,ÔòÐ޸ijÉno */         /** ÏÈÓÃxpath²éÕÒ¶ÔÏó */         List list = document.selectNodes("//books/book/@show" );         Iterator iter = list.iterator();         while(iter.hasNext()){            Attribute attribute = (Attribute)iter.next();            if(attribute.getValue().equals("yes")){                attribute.setValue("no");            }            } ÓÃeclipse±àÒë ±¨´í java.lang.NoClassDefFoundError: org/jaxen/JaxenException  at org.dom4j.DocumentFactory.createXPath(DocumentFactory.java:230)  at org.dom4j.tree.AbstractNode.createXPath(AbstractNode.java:207)  at org.dom4j.tree.AbstractNode.selectNodes(AbstractNode.java:164)  at com.sm.xml.domj4.Dom4jDemo.ModiXMLFile(Dom4jDemo.java:178)  at com.sm.xml.domj4.Dom4jDemo.main(Dom4jDemo.java:63) Exception in thread "main" Ëü˵ÊÇ List list = document.selectNodes("//books/book/@show" ); ÐÐÓдí ÎÒ»»³É/books/book/@showÒ²±¨Í¬ÑùµÄ´íÎó,»»³É/books/book/showÒ²±¨Í¬ÑùµÄ´íÎó ÄÄΪҲÓöµ½¹ýͬÑùµÄÎÊÌ⣬°ï°ïÎÒ    Êղؠ  ·ÖÏí   ¶¥(0)