Running The Struts Example Application

[Mark Bennett]

Hi, I am running Tomcat 4.0 and am trying to run the Struts 1.0 sample application, struts-example.war.  I have moved this file into the Tomcat webapp directory, however when I try to access it I get the following error:   A Servlet Exception Has Occurred Exception Report: javax.servlet.ServletException: Cannot find message resources under key org.apache.struts.action.MESSAGE at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:452) at org.apache.jsp._0002findex_jsp._jspService(_0002findex_jsp.java:453) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:458) 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:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:215) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2314) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1000) at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1093) at java.lang.Thread.run(Thread.java:484) Root Cause: javax.servlet.jsp.JspException: Cannot find message resources under key org.apache.struts.action.MESSAGE at org.apache.struts.util.RequestUtils.message(RequestUtils.java:568) at org.apache.struts.taglib.bean.MessageTag.doStartTag(MessageTag.java:239) at org.apache.jsp._0002findex_jsp._jspService(_0002findex_jsp.java:93) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:201) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:458) 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:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:215) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2314) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1000) at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1093) at java.lang.Thread.run(Thread.java:484) I have tried running the other applications that come with Struts, and have also tried creating one of my own from scratch using a tutorial I found at the HP website.  They all seem to produce this error.  I did find this error message in the localhost_log_xxxx.txt file:   2001-08-29 08:57:01 StandardContext[/struts-example]: Servlet /struts-example threw load() exception javax.servlet.ServletException: Error instantiating servlet class org.apache.struts.action.ActionServlet         at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:818)         at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3240)         at org.apache.catalina.core.StandardContext.start(StandardContext.java:3350)         at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:785)         at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:415)         at org.apache.catalina.core.StandardHost.install(StandardHost.java:643)         at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:324)         at org.apache.catalina.startup.HostConfig.start(HostConfig.java:389)         at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:232)         at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:155)         at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1131)         at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)         at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:278)         at org.apache.catalina.core.StandardService.start(StandardService.java:368)         at org.apache.catalina.core.StandardServer.start(StandardServer.java:473)         at org.apache.catalina.startup.Catalina.start(Catalina.java:738)         at org.apache.catalina.startup.Catalina.execute(Catalina.java:657)         at org.apache.catalina.startup.Catalina.process(Catalina.java:178)         at java.lang.reflect.Method.invoke(Native Method)         at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:202) ----- Root Cause ----- java.lang.NoClassDefFoundError: org/xml/sax/SAXException         at java.lang.Class.newInstance0(Native Method)         at java.lang.Class.newInstance(Class.java:237)         at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:809)         at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3240)         at org.apache.catalina.core.StandardContext.start(StandardContext.java:3350)         at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:785)         at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:415)         at org.apache.catalina.core.StandardHost.install(StandardHost.java:643)         at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:324)         at org.apache.catalina.startup.HostConfig.start(HostConfig.java:389)         at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:232)         at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:155)         at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1131)         at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)         at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:278)         at org.apache.catalina.core.StandardService.start(StandardService.java:368)         at org.apache.catalina.core.StandardServer.start(StandardServer.java:473)         at org.apache.catalina.startup.Catalina.start(Catalina.java:738)         at org.apache.catalina.startup.Catalina.execute(Catalina.java:657)         at org.apache.catalina.startup.Catalina.process(Catalina.java:178)         at java.lang.reflect.Method.invoke(Native Method)         at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:202) I believe that this may be what's causing the exception though I am not sure.  I haven't had to use SAX yet for anything else but it does seem to be in my classpath ($CLASSPATH=:/usr/jakarta-ant-1.3/lib:/usr/javamail-1.2/mail.jar:/usr/java/jdk1.3.1/lib/activation.jar:/usr/local/pgsql/share/java/postgresql.jar:/usr/jaxp-1.1/jaxp.jar:/usr/jaxp-1.1/xalan.jar)   Does anyone have any ideas how to fix this?  Is my $CLASSPATH setup incorrectly?  If so, how do I fix it?  I don't understand why Tomcat is working since I seem to remember it counting on these classes to run.  Thanks!   -Mark Bennett Computer Science III University of Alberta