jsp 错误 java.lang.ClassNotFoundException: org.apache.lucene.store.Directory 求原因

[小小鱼游啊游]

type Exception report

message An exception occurred processing JSP page /clustering.jsp at line 74

description The server encountered an internal error that prevented it from fulfilling this request.

exception 

org.apache.jasper.JasperException: An exception occurred processing JSP page /clustering.jsp at line 74

71: System.out.println(select+select+"_keyword.txt"+select+"_vsr.txt"+k_value+"D:\\users\\1");
72: String[] args={select,select+"_keyword.txt",select+"_vsr.txt",k_value,"D:\\users\\1"};
73: //System.out.println(args[3]);
74:    PrintCluster.main(args); 
75:    
76:    }
77:    }


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)


root cause 

javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/lucene/store/Directory
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:912)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:841)
	org.apache.jsp.clustering_jsp._jspService(clustering_jsp.java:159)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)


root cause 

java.lang.NoClassDefFoundError: org/apache/lucene/store/Directory
	pre.kmeans.main(kmeans.java:26)
	run.PrintCluster.main(PrintCluster.java:34)
	org.apache.jsp.clustering_jsp._jspService(clustering_jsp.java:140)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)


root cause 

java.lang.ClassNotFoundException: org.apache.lucene.store.Directory
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
	pre.kmeans.main(kmeans.java:26)
	run.PrintCluster.main(PrintCluster.java:34)
	org.apache.jsp.clustering_jsp._jspService(clustering_jsp.java:140)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

单独运行java文件的PrintCluster可以运行通过，PrintCluster调用Kmeans类，kmeans.java 26为

		int  num=transform.getNum(dataDir);  

getNum为一个静态方法。 我已在jsp页面导入了PrintCluster，kmeans和transform。
不是很理解为什么 产生这个错误 java.lang.ClassNotFoundException: org.apache.lucene.store.Directory 求大神们指导，谢谢！

[tony4geek]

java.lang.ClassNotFoundException: org.apache.lucene.store.Directory 这个就是少 jar 的。或者jar 冲突了。

[点滴寸土]

感觉还是楼主jsp导出有问题，贴出来瞅瞅

[xuefeng0707]

看下你的lucene-core.jar有没有在WEB-INF\lib下。

[小小鱼游啊游]

引用 3 楼 xuefeng0707 的回复:

看下你的lucene-core.jar有没有在WEB-INF\lib下。

非常感谢，就是这个问题！！