紧急求助！tomcat起动时报错servlet.jar) - jar not loaded.

Question

jdk1.5.0_06
tomcat-5.0.28
eclipse3.1
mysql5.0.16在eclipse里起tomcat的时候，报以下错误2005/12/23 11:50:09 org.apache.catalina.loader.WebappClassLoader validateJarFile
情報: validateJarFile(C:\Tomcat 5.0\webapps\myproject\WEB-INF\lib\servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
2005/12/23 11:50:09 org.apache.commons.digester.Digester getParser
致命的: Digester.getParser: 
org.xml.sax.SAXNotRecognizedException: http://apache.org/xml/features/validation/dynamic
at gnu.xml.aelfred2.JAXPFactory.setFeature(JAXPFactory.java:102)
at org.apache.commons.digester.parser.XercesParser.configureXerces(XercesParser.java:185)
at org.apache.commons.digester.parser.XercesParser.newSAXParser(XercesParser.java:138)
at org.apache.commons.digester.ParserFeatureSetterFactory.newSAXParser(ParserFeatureSetterFactory.java:73)
at org.apache.commons.digester.Digester.getParser(Digester.java:682)
at org.apache.commons.digester.Digester.getXMLReader(Digester.java:891)
at org.apache.commons.digester.Digester.parse(Digester.java:1572)
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:738)
at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:333)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1029)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:862)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4013)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4357)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277)
at org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:701)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
at org.apache.catalina.core.StandardService.start(StandardService.java:480)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
2005/12/23 11:50:09 org.apache.struts.action.ActionServlet init
致命的: Unable to initialize Struts ActionServlet due to an unexpected exception or error thrown, so ing the servlet as unavailable.  Most likely, this is due to an incorrect or missing library dependency.
java.lang.NullPointerException
at org.apache.commons.digester.Digester.getXMLReader(Digester.java:891)
at org.apache.commons.digester.Digester.parse(Digester.java:1572)
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:738)
at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:333)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1029)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:862)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4013)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4357)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277)
at org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:701)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
at org.apache.catalina.core.StandardService.start(StandardService.java:480)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
2005/12/23 11:50:10 org.apache.catalina.core.StandardHostDeployer install==========>
servlet.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
2005/12/23 11:50:09 org.apache.commons.digester.Digester getParser
缺少包？还是什么缘故？要怎么解决啊？恳请大家帮忙！！！

Answer 1

上文中提到：servlet.jar) - jar not loaded.
应该是servlet.jar这个包没有加载吧，你在eclipse3.1的环境配置里看一下，应该可以手动配置加载的

Answer 2

工程的属性，java build path里libraries下已经添加了所有WEB-INF\lib\里的包了，包括servlet.jar
不在eclipse里起tomcat,直接在外面起tomcat,一样的情况

Answer 3

Digester是解析xml文件的包
是你的某个xml格式错误吧
你用到了struts的validation框架,看看他的配置文件是不是写错了

Answer 4

上面虽然有错误，但tomcat还能起来，然后我跑http://localhost:8080/myproject/ 就报错了説明 The server encountered an internal error () that prevented it from fulfilling this request.例外 javax.servlet.ServletException: ActionMappings 或者 ActionFormBeans collection找不到
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.a001_jsp._jspService(a001_jsp.java:379)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
原因 javax.servlet.jsp.JspException: ActionMappings 或者 ActionFormBeans collection找不到
org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:741)
org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:443)
org.apache.jsp.a001_jsp._jspService(a001_jsp.java:194)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)哎！！到底是怎么回事，，头痛中！！！

Answer 5

there is error in struts-config.xml

Answer 6

struts-config.xml看不出什么错误阿，，，痛苦啊，，，