>From the code you've provided it's failing at request.getAttribute("buttonLabel").equals("Simulate"))
Can you please specify how/where "buttonLabel" is set in the code. The only thing i can think of is that validation is stopping the flow to execute() and some variable set there may not be visible when you are redirected to the jsp - which would have been set normally if the Action execute() completes fine. HTH, Joseph On Nov 29, 2007 6:07 AM, Giovanni Azua <[EMAIL PROTECTED]> wrote: > hi, > > I have a JSP (snippet below) that works fine without validation, I need > to conditionally include certain > fields, I prefer that to the other choice of having two different copies > of slightly similar input form JSP > that I will then have to keep in sync. > > Only when I add a validation xml file corresponding to the target Action > I get the > NullPointerException stacktrace below. > > TIA, > regards, > Giovanni > > ****************************** stacktrace > *********************************** > > SEVERE: Servlet.service() for servlet jsp threw exception > java.lang.NullPointerException > at > org.apache.jsp.jsp.form.formAngleAlgoConf_jsp._jspService > (formAngleAlgoConf_jsp.java:105) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java > :393) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) > 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:654) > at > org.apache.catalina.core.ApplicationDispatcher.doInclude( > ApplicationDispatcher.java:557) > at > org.apache.catalina.core.ApplicationDispatcher.include( > ApplicationDispatcher.java:481) > ... > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process( > Http11Protocol.java:581) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Thread.java:619) > Nov 29, 2007 12:04:07 PM > org.apache.tiles.jsp.context.JspTilesRequestContext include > SEVERE: JSPException while including path > '/jsp/form/formAngleAlgoConf.jsp'. > javax.servlet.jsp.JspException: ServletException while including page. > at org.apache.tiles.jsp.context.JspUtil.doInclude(JspUtil.java:102) > at > org.apache.tiles.jsp.context.JspTilesRequestContext.include( > JspTilesRequestContext.java:88) > at > org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch( > JspTilesRequestContext.java:82) > at > org.apache.tiles.context.TilesRequestContextWrapper.dispatch( > TilesRequestContextWrapper.java:72) > at > org.apache.struts2.tiles.StrutsTilesRequestContext.dispatch( > StrutsTilesRequestContext.java:87) > at > org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java > :465) > ... > at > org.apache.catalina.core.StandardEngineValve.invoke( > StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java > :261) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process( > Http11Protocol.java:581) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) > at java.lang.Thread.run(Thread.java:619) > Caused by: org.apache.jasper.JasperException: An exception occurred > processing JSP page /jsp/form/formAngleAlgoConf.jsp at line 6 > > 3: <%@ taglib prefix="sx" uri="/struts-dojo-tags" %> > 4: > 5: <s:form action="%{targetAction}" method="post" theme="%{currentTheme}"> > 6: <% if (request.getAttribute("buttonLabel").equals("Simulate")) { %> > 7: <!-- fields required only for Simulation --> > 8: > 9: <sx:datetimepicker label="Begin Date" name="beginDate" > displayFormat="yyyy.MM.dd" toggleType="fade" toggleDuration="500" /> > > Stacktrace: > at > org.apache.jasper.servlet.JspServletWrapper.handleJspException( > JspServletWrapper.java:524) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java > :435) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) > 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:654) > > ****************************** mypage.jsp > *********************************** > > <%@ page contentType="text/html; charset=UTF-8"%> > <%@ taglib prefix="s" uri="/struts-tags"%> > <%@ taglib prefix="sx" uri="/struts-dojo-tags" %> > > <s:form action="%{targetAction}" method="post" theme="%{currentTheme}"> > <% if (request.getAttribute("buttonLabel").equals("Simulate")) { %> > <!-- fields required only for Simulation --> > > <sx:datetimepicker label="Begin Date" name="beginDate" > displayFormat="yyyy.MM.dd" toggleType="fade" toggleDuration="500" /> > <sx:datetimepicker label="End Date" name="endDate" > displayFormat="yyyy.MM.dd" toggleType="fade" toggleDuration="500" /> > <% } else { %> > <!-- fields required only for CRUD operations --> > > <s:textfield tooltip="Provide a name" label="Name" > cssStyle="width: 250px;" name="name" /> > <% } %> > > <sx:datetimepicker label="On Time" tooltip="Provide the On Time" > name="onTime" type="time" toggleType="fade" toggleDuration="500" /> > <sx:datetimepicker label="Off Time" tooltip="Provide the Off Time" > name="offTime" type="time" toggleType="fade" toggleDuration="500" /> > > > // etc etc > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >