Something is wrong in your JSP... looks like that stack trace was cut off, but your beyond the AJAX parts at this point, you need to find the error in your JSP.
-- Frank W. Zammetti Founder and Chief Software Architect Omnytex Technologies http://www.omnytex.com AIM/Yahoo: fzammetti MSN: [EMAIL PROTECTED] Author of "Practical Ajax Projects With Java Technology" (2006, Apress, ISBN 1-59059-695-1) and "JavaScript, DOM Scripting and Ajax Projects" (2007, Apress, ISBN 1-59059-816-4) Java Web Parts - http://javawebparts.sourceforge.net Supplying the wheel, so you don't have to reinvent it! On Tue, September 11, 2007 2:25 pm, aarthy wrote: > > Frank, > > I tried forwarding it to a jsp page ShowCharacters.jsp > > <select name="TVShowSelect"> > <%int i = 0; > ArrayList ch = (ArrayList) > request.getSession().getAttribute("characters"); > String[] s = new String[ch.size()]; > ch.toArray(s); > for (Iterator it = s.length; it.hasNext();) { > String name = (String)it.next(); > %> > <option><%=name%></option> > </select> > > public ActionForward execute(ActionMapping mapping, ActionForm inForm, > HttpServletRequest request, HttpServletResponse response) throws Exception > { > > String tvShow = (String)request.getParameter("tvShow"); > if (tvShow == null) { > tvShow = ""; > } > ArrayList characters = getCharacters(tvShow); > request.getSession().setAttribute("characters", > characters); > response.setContentType("text/html"); > return mapping.findForward("success"); > } // E > But when I select some value from the first combo box(TVShowSelect),I get > the message Problem:Internal Server Error. > IN the logs,I get the following error message > > Servlet.service() for servlet jsp threw exception > org.apache.jasper.JasperException: Unable to compile class for JSP: > > > > > Stacktrace: > at > org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:85) > at > org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330) > at > org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:435) > at org.apache.jasper.compiler.Compiler.compile(Compiler.java:298) > at org.apache.jasper.compiler.Compiler.compile(Compiler.java:277) > at org.apache.jasper.compiler.Compiler.compile(Compiler.java:265) > at > org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:299) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) > at > org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691) > at > org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469) > at > org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:403) > at > org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) > at > org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1063) > at > org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386) > at > org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229) > at > org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194) > at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870) > at > org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) > at > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) > at > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685) > at java.lang.Thread.run(Thread.java:619) > > Can you please post the coding here? > > Thanks > > > > Frank W. Zammetti wrote: >> >> Simply forward to a JSP and render your output there, same as any Struts >> Action. It can be XML, JSON, HTML, some custom format, whatever. I >> wish >> I had written that article showing that in the first place since this is >> a >> question that gets asked all the time, but I thought this was simpler >> (one >> less bounce to follow the ball through), but in retrospect.. :( >> >> Frank >> >> -- >> Frank W. Zammetti >> Founder and Chief Software Architect >> Omnytex Technologies >> http://www.omnytex.com >> AIM/Yahoo: fzammetti >> MSN: [EMAIL PROTECTED] >> Author of "Practical Ajax Projects With Java Technology" >> (2006, Apress, ISBN 1-59059-695-1) >> and "JavaScript, DOM Scripting and Ajax Projects" >> (2007, Apress, ISBN 1-59059-816-4) >> Java Web Parts - http://javawebparts.sourceforge.net >> Supplying the wheel, so you don't have to reinvent it! >> >> On Tue, September 11, 2007 11:46 am, aarthy wrote: >>> >>> Hi, >>> >>> In the below code,how can I avoid the HTML coding in the action >>> class?(http://www.omnytex.com/articles/xhrstruts/xhrstruts.zip) >>> I tried many different codings,but everything failed. >>> >>> public class Example3GetCharactersAction extends Action { >>> >>> >>> public ActionForward execute(ActionMapping mapping, ActionForm >>> inForm, >>> HttpServletRequest request, HttpServletResponse response) throws >>> Exception >>> { >>> >>> // Get a list of characters associated with the select TV show >>> String tvShow = (String)request.getParameter("tvShow"); >>> if (tvShow == null) { >>> tvShow = ""; >>> } >>> ArrayList characters = getCharacters(tvShow); >>> >>> // And yes, I know creating HTML in an Action is generally very bad >>> form, >>> // but I wanted to keep this exampel simple. >>> String html = "<select name=\"CharactersSelect\">"; >>> int i = 0; >>> for (Iterator it = characters.iterator(); it.hasNext();) { >>> String name = (String)it.next(); >>> i++; >>> html += "<option value=\"" + i + "\">" + name + "</option>"; >>> } >>> html += "</select>"; >>> >>> // Write the HTML to response >>> response.setContentType("text/html"); >>> PrintWriter out = response.getWriter(); >>> out.println(html); >>> out.flush(); >>> >>> return null; // Not forwarding to anywhere, response is >>> fully-cooked >>> >>> } // End execute() >>> >>> >>> // This method returns a list of characters for a given TV show. If >>> no >>> TV >>> // show is selected, i.e., initial page view, am empty ArrayList is >>> returned. >>> private ArrayList getCharacters (String tvShow) { >>> >>> ArrayList al = new ArrayList(); >>> >>> if (tvShow.equalsIgnoreCase("StarTrekTNG")) { >>> al.add("Jean Luc Picard"); >>> al.add("William T. Riker"); >>> al.add("Data"); >>> al.add("Deanna Troi"); >>> al.add("Geordi LaForge"); >>> } >>> >>> if (tvShow.equalsIgnoreCase("Babylon5")) { >>> al.add("John Sheridan"); >>> al.add("Delenn"); >>> al.add("Londo Mollari"); >>> al.add("Stephen Franklin"); >>> al.add("Vir Cotto"); >>> } >>> >>> if (tvShow.equalsIgnoreCase("StargateSG1")) { >>> al.add("Samantha Carter"); >>> al.add("Jack O'Neil"); >>> al.add("Teal'c"); >>> al.add("Daniel Jackson"); >>> al.add("Baal"); >>> } >>> >>> return al; >>> >>> } // End getCharacters() >>> >>> Thanks. >>> >>> -- >>> View this message in context: >>> http://www.nabble.com/Ajax-using-XMLHttpRequest-and-Struts-tf4423481.html#a12617736 >>> Sent from the Struts - User mailing list archive at Nabble.com. >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>> For additional commands, e-mail: [EMAIL PROTECTED] >>> >>> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> >> > > -- > View this message in context: > http://www.nabble.com/Ajax-using-XMLHttpRequest-and-Struts-tf4423481.html#a12620775 > Sent from the Struts - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
