运行 tomcat 时，出现如下错误: (在代码中，对于 Controller 来说，它工作正常，但是当涉及到JSP页面时，它会给出错误) 请问有人可以帮忙吗？
Oct 30, 2013 4:48:16 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.ClassNotFoundException: org.apache.commons.lang.UnhandledException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2404)
at java.lang.Class.getConstructor0(Class.java:2714)
at java.lang.Class.newInstance0(Class.java:343)
at java.lang.Class.newInstance(Class.java:325)
at com.sun.beans.finder.InstanceFinder.instantiate(InstanceFinder.java:96)
at com.sun.beans.finder.InstanceFinder.find(InstanceFinder.java:66)
at java.beans.Introspector.findExplicitBeanInfo(Introspector.java:455)
at java.beans.Introspector.<init>(Introspector.java:405)
at java.beans.Introspector.getBeanInfo(Introspector.java:174)
at org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3911)
at org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2174)
at org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1632)
at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:495)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
at org.apache.jasper.compiler.Generator.generate(Generator.java:3461)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:231)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:321)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at com.preva.controller.OverspeedDBProcess.service(OverspeedDBProcess.java:86)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1760)
at java.lang.Thread.run(Thread.java:722)
像这样的 Controller
package com.preva.controller;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.preva.dao.UserDAO;
import com.preva.vo.OverspeedDetails;
/**
* Servlet implementation class OverspeedDBProcess
*/
public class OverspeedDBProcess extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public OverspeedDBProcess() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
try{
response.setContentType("text/html");
PrintWriter out=response.getWriter();
HttpSession session=request.getSession(true);
String accountID=(String)session.getAttribute("sessionId");
String deviceID=request.getParameter("vehicleId");
String fromDate=request.getParameter("AnotherDate");
String toDate=request.getParameter("ADate");
String stringspeed=request.getParameter("speed").substring(1,3);
double speed=Double.parseDouble(stringspeed);
session.setAttribute("vid",deviceID);
session.setAttribute("fromdate",fromDate);
session.setAttribute("startdate",toDate);
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
Date startD = (Date) sdf.parse(fromDate);
Date endD = (Date) sdf.parse(toDate);
Calendar cal1 = Calendar.getInstance();
Calendar cal2 = Calendar.getInstance();
cal1.setTime(startD);
cal2.setTime(endD);
long timestamp1,timestamp2;
timestamp1=cal1.getTimeInMillis()/1000;
timestamp2=cal2.getTimeInMillis()/1000;
System.out.println("::::"+timestamp1);
System.out.println("::::"+timestamp2);
String Timestamp1 = Long.toString(timestamp1);
String Timestamp2 = Long.toString(timestamp2);
UserDAO rdao=new UserDAO();
List<OverspeedDetails> overspeeddetail=rdao.getosDetails(accountID, deviceID, Timestamp1, Timestamp2,speed);
if(!(overspeeddetail.isEmpty())){
session.setAttribute("overspeeddetails", overspeeddetail);
RequestDispatcher rd=request.getRequestDispatcher("OverspeedDBReport.jsp");
rd.include(request,response);
return;
}
RequestDispatcher rd=request.getRequestDispatcher("DataNotFound.jsp");
rd.include(request,response);
}catch (Exception e) {
// TODO: handle exception
}
}
}
Jsp页面是这样的
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ page import = "com.preva.vo.StoppageDetails"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib uri="http://displaytag.sf.net" prefix="display" %>
<!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">
<link href="css/cal.css" rel="stylesheet" type="text/css" />
<link href="css/sty.css" rel="stylesheet" type="text/css" />
<link href="css/tabborder.css" rel="stylesheet" type="text/css" />
</head>
<body>
<jsp:include page="Header.jsp" />
<table align=center border=0 cellspacing=0 cellpadding=0>
<tr ><td colSpan=5 align=center><b>Overspeed Details</b></td></tr>
<tr ><td colspan=5 align=center><b><%=request.getParameter("vehicleId") %></b></td></tr>
<tr><td>From <%=session.getAttribute("fromdate") %> to <%=session.getAttribute("startdate") %></td></tr>
</table><br></br>
<table class='rptTbl_sortable' width='80%' align=center cellspacing='2' cellpadding='0' border='0'>
<thead>
<tr class="rptHdrRow">
<th id="index" class="rptHdrCol_sort" nowrap>DeviceID</th>
<th id="date" class="rptHdrCol_sort" nowrap>Date</th>
<th id="time" class="rptHdrCol_sort" nowrap>Speed</th>
<th id="statusdesc" class="rptHdrCol_sort" nowrap>Status</th>
<th id="address" class="rptHdrCol_sort" nowrap>Address</th>
</tr>
</thead>
<tbody>
<display:table id="deviceDetailsID" name="sessionScope.overspeeddetails" pagesize="10" style="width:99%;">
<display:setProperty name="basic.empty.showtable" value="true" />
<display:setProperty name="paging.banner.group_size" value="10" />
<display:setProperty name="paging.banner.item_name" value="user" />
<display:setProperty name="paging.banner.item_names" value="users" />
<display:column property="deviceID" title="Device ID" sortable="true" headerClass="sortable" style="width: 1%"/>
<display:column property="TIMESTAMP" title="TIMESTAMP" sortable="true" headerClass="sortable" format="{0,date,dd-MM-yyyy}"/>
<display:column property="speed" title="Speed" sortable="true"/>
<display:column property="statuscode" title="Status Code"/>
<display:column property="address" title="Address" sortable="true" headerClass="sortable" />
</display:table>
</tbody>
</table>
</body>
最佳答案
我在 this post 中发布了答案。我建议您更新问题，但您发布了新问题，因为评论中很难阅读。
您需要添加Commons Lang 2.6 jar在您的类路径中以避免此异常。
关于jsp - java.lang.ClassNotFoundException : org. apache.commons.lang.UnhandledException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19681168/