Looks like you're missing a form definition, lookup (the method causing
the exception) is looking for the form bean when no name is specified in
the field definition.
<action path="/load"
type="test.web.LoadAction"
--> name="editForm" <----
scope="request"
validate="true">
<forward name="continue"
path="/jsp/edit.jsp">
</forward>
</action>
Hope that works!
danny
Jonathan Kovacs wrote:
>Hi All,
>
>I've been beating my head against this problem for a couple days now and
>frankly, I'm stumped...
>
>Using Struts 1.0.2, I'm attempting to display a select box which is filled
>with a list of options loaded into the session context. I've verified that
>the options are loaded (using an <html:iterate> tag), but for some reason,
>the instant I add an <html:form> tag to my .jsp, all hell breaks loose.
>
>The path my application follows is this:
>
>/jsp/index.jsp --> /load.do --> /jsp/edit.jsp
>
>The relevant sections of my struts-config.xml file:
>
><struts-config>
>
> <!-- ========== Form Bean Definitions ===================================
>-->
> <form-beans>
> <form-bean name="editForm"
> type="test.web.editForm" />
> </form-beans>
>
> <!-- ========== Action Mapping Definitions ==============================
>-->
> <action-mappings>
> <action path="/load"
> type="test.web.LoadAction"
> scope="request"
> validate="true">
> <forward name="continue"
> path="/jsp/edit.jsp">
> </forward>
> </action>
> <action path="/edit"
> type="test.web.EditAction"
> name="editForm"
> scope="request"
> input="/jsp/edit.jsp"
> validate="false">
> <forward name="cancel"
> path="/jsp/index.jsp">
> </forward>
> <forward name="continue"
> path="/jsp/edit.jsp">
> </forward>
> </action>
> </action-mappings>
></struts-config>
>
>In edit.jsp:
>
><html:form action="/edit.do">
> <html:select property="name">
> <html:options collection="<%= Constants.DATA % >" property="label"/>
> </html:select>
></html:form>
>
>The error:
>
>javax.servlet.ServletException
> at
>org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
>l.java:471)
> at org.apache.jsp.edit$jsp._jspService(groups$jsp.java:312)
> 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.ja
>va:201)
> at
>org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.
>java:683)
> at
>org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatch
>er.java:431)
> at
>org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher
>.java:355)
> at
>org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.ja
>va:2199)
> at
>org.apache.struts.action.ActionServlet.process(ActionServlet.java:2023)
> at
>org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:540)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
>FilterChain.java:247)
> at
>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
>ain.java:193)
> at
>org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
>va:243)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> 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.ja
>va:190)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> at
>org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
>46)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> 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:2347)
> at
>org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
>)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> at
>org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
>java:170)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> at
>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
>)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> at
>org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> 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
>:174)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> 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:
>1027)
> at
>org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125
>)
> at java.lang.Thread.run(Thread.java:479)
>14:25:35,791 ERROR [Engine] ----- Root Cause -----
>javax.servlet.jsp.JspException
> at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:803)
> at
>org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:481)
> at org.apache.jsp.edit$jsp._jspService(groups$jsp.java:199)
> at
>org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
>va:201)
> at
>org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.
>java:683)
> at
>org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatch
>er.java:431)
> at
>org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher
>.java:355)
> at
>org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.ja
>va:2199)
> at
>org.apache.struts.action.ActionServlet.process(ActionServlet.java:2023)
> at
>org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:540)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
>FilterChain.java:247)
> at
>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
>ain.java:193)
> at
>org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
>va:243)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> 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.ja
>va:190)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> at
>org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
>46)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> 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:2347)
> at
>org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
>)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> at
>org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
>java:170)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> at
>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
>)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> at
>org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>64)
> 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
>:174)
> at
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
>66)
> 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:
>1027)
> at
>org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125
>)
> at java.lang.Thread.run(Thread.java:479)
>
>I've looked at line 803 of FormTag.lookup and so far as I can tell, the
>exception is thrown because the code gets a null from it's call to
>FormBeans.findFormBean(String):
>
> // Look up the form bean definition
> ActionFormBean formBean =
> formBeans.findFormBean(mapping.getName());
> if (formBean == null) {
> JspException e = new JspException
> (messages.getMessage("formTag.formBean",
>mapping.getName()));
> pageContext.setAttribute(Action.EXCEPTION_KEY, e,
> PageContext.REQUEST_SCOPE);
> throw e;
> }
>
> // Calculate the required values
> name = mapping.getName(); // <--- Line 803
> scope = mapping.getScope();
> servlet = mappings.getServlet();
> type = formBean.getType();
>
>Any suggestions would be *greatly* appreciated!
>
>Thanks,
>
>Jonathan Kovacs
>
>
>
>
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