Exception in thread "main" java.lang.NoClassDefFoundError: org.jaxen.NamespaceContext
2013-09-16 00:08
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使用dom4j解析XML时,要快速获取某个节点的数据,使用XPath是个不错的方法,dom4j的快速手册里也建议使用这种方式,标题都写的这么阔气:Powerful Navigation with XPath。
方法是使用Document的selectNodes(String XPath)方法,代码写法:
List l = doc.selectNodes("//COLS/COL1");
执行时却抛出以下异常:
Exception in thread "main" 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)
这么好用的方法怎么能抛异常呢,一路跟踪过去看,竟然是“List l = doc.selectNodes("//COLS/COL1");”这句报错,查了一下才知道,不光要有dom4j这个包,还要有jaxen 包:<jaxen-1.1-beta-6.jar>-238 KB,这应该是dom4j的基础包,在dom4j的zip包的lib目录里可以找到。即使用这个方法需要以下两个包:
dom4j-1.6.1.jar-306 KB
jaxen-1.1-beta-6.jar-238 KB
方法是使用Document的selectNodes(String XPath)方法,代码写法:
List l = doc.selectNodes("//COLS/COL1");
执行时却抛出以下异常:
Exception in thread "main" 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)
这么好用的方法怎么能抛异常呢,一路跟踪过去看,竟然是“List l = doc.selectNodes("//COLS/COL1");”这句报错,查了一下才知道,不光要有dom4j这个包,还要有jaxen 包:<jaxen-1.1-beta-6.jar>-238 KB,这应该是dom4j的基础包,在dom4j的zip包的lib目录里可以找到。即使用这个方法需要以下两个包:
dom4j-1.6.1.jar-306 KB
jaxen-1.1-beta-6.jar-238 KB
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