jbpm页面抛错el相关java.lang.ClassCastException: de.odysseus.el.ExpressionFactoryImpl c

那位遇到过这个问题，请指教
导入包是导入jbpm全体包
jbpm版本是
jbpm-4.3
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严重: Servlet.service() for servlet jsp threw exception
java.lang.ClassCastException: de.odysseus.el.ExpressionFactoryImpl cannot be cast to javax.el.ExpressionFactory
at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:180)
at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:107)
at org.apache.jasper.compiler.PageInfo.<init>(PageInfo.java:78)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:109)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:360)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:314)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:163)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:402)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:249)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:267)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:245)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:260)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

解决方案 »

  1.   

    java.lang.ClassCastException: de.odysseus.el.ExpressionFactoryImpl cannot be cast to javax.el.ExpressionFactory
    类型转换异常了
    你是怎么转换的
      

  2.   

    页面很简单 页面部分没有涉及到el部分的内容
    ----------------------------------
    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ page import="java.util.*,org.jbpm.api.*" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    <%
    org.jbpm.api.ProcessEngine processEngine=Configuration.getProcessEngine();
    RepositoryService repositoryService=processEngine.getRepositoryService();
    List<ProcessDefinition> list=repositoryService.createProcessDefinitionQuery().list();
    %>
    目前共有<%=list.size() %>个流程
    <%for(ProcessDefinition pd:list){
    %>
    流程id<%=pd.getId() %>流程名称<%=pd.getName() %>流程版本<%=pd.getVersion() %>
    <%
    }%>
    </body>
    </html>
    ----------------------------------------
      

  3.   

    http://www.family168.com/jbpm4/faq.html
    我估计楼主应该是tomcat的jar包冲突吧，按照这个链接地址解决试试
      

  4.   

    解决了我的问题，呵呵   juel jar 包的问题