《jsp设计》书中的例子为何不能运行！我是菜鸟呀，帮我吧！

[blueapache]

听说《ｊｓｐ设计》不错买了书从thejspbook.com下载了源码！放在tomcat的webapps/root/ora下起动tomcat之后运行５００错！
description The server encountered an internal error () that prevented it from fulfilling this request

exception

org.apache.jasper.JasperException: This absolute uri (http://java.sun.com/jstl/core) cannot be resolved in either web.xml or the jar files deployed with this application
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:105)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:430)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:154)
at org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:159)
at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:354)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:381)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:800)
at org.apache.jasper.compiler.Parser.parse(Parser.java:122)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:199)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:153)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:223)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:474)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:184)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530)
at java.lang.Thread.run(Thread.java:536)

[struggle007csdn]

你给出的信息不知错误出在哪里。你说说你的过程吧。

[hfprogramer]

up

[blueapache]

苦啊！

[blueapache]

一从网上载了jspbook!
　 二新建一个虚拟主机try
　 三：把jspbook解压后ora和 srcr拷到myweb下面来！
　　四启动tomcat,http://lcoalhost:8080/myweb;
五选择例子！结果就是不能运行！
我发现只要用到 bean的都不能运行，于是我把src下的文件和目录都拷到clsses下面并编译了第一个例子的bean UserInfoBean.java!
D:\Tomcat 4.1\webapps\myweb\ora\WEBINF\classes\com\ora\jsp\beans\userinfo>javac
UserInfoBean.java
可是不能通过编译！主要错误是下面一条，可是下面的这个存在而且通过了编译！
UserInfoBean.java:5: package com.ora.jsp.util does not exist
import com.ora.jsp.util.*;

[cocolovevienna]

你根我遇到的情况一模一样，我也找了网上的资料，说是只要在conf/server.xml文件里加上一句：
<Context path="/myweb" docBase="d:\tomcat\webapps\ROOT\myweb" debug="0" reloadable="true" crossContext="true"></Context>
当然先停tomcat，然后再改，改完后再重新启动tomcat.
里面的docBase是你的绝对路径，可我在自己的文件里改了，就是不管用。烦死我的。总是提示500错误，说是包或是类不存在。