Are you using the html:form tag?
It looks as though that tag requires that you have a bean associated
with the form.
I am using struts 1.0 beta 3 (so maybe this is different in the 1.0
release) but, the form tag
trys to retrieve a bean from the pageContext, if it does not find one,
then it attempts to create a new one.
So it looks like you will either need to add a bean, or use a standard
<FORM> tag.
However, using the <FORM> HTML tag will forfeit the bonus stuff craig
mentioned below.
HTH,
Pete
Bill Firestone wrote:
> Pete,
>
> I thank you, but I still get "Cannot retrieve definition for form bean
> null." XML now is:
>
> <action path="/uidstart"
> type="com.cisco.nm.uid.struts.action.UidAction">
> <forward name="success" path="/engineresult.jsp"/>
> </action>
>
> I'm sure I'm modifying correct XML file because if I add
>
> name="FRED"
>
> attribute in <action> element, then the above error turns into "Cannot
> retrieve definition for form bean FRED"
>
> Bill
>
> At 03:33 PM 6/18/2001 -0500, you wrote:
>
>> try removing the 'scope' and 'validate' attributes.
>>
>> Pete
>>
>>
>>
>> Bill Firestone wrote:
>>
>> > All sounds good, but I get the following error:
>> >
>> > Error: 500
>> > Location: /uid/index.jsp
>> > Internal Servlet Error:
>> > javax.servlet.ServletException: Cannot retrieve definition for form
>> > bean null
>> > at
>> >
>org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459)
>> >
>> > at
>> >
>_0002findex_0002ejspindex_jsp_34._jspService(_0002findex_0002ejspindex_jsp_34.java:257)
>> >
>> > at
>> > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
>> >
>> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>> > at
>> >
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
>> >
>> > at
>> > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
>> >
>> > at
>> > org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
>> > at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>> > at
>> > org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
>> >
>> > at org.apache.tomcat.core.Handler.service(Handler.java:286)
>> > at
>> > org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
>> >
>> > at
>> > org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
>> >
>> > at
>> > org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
>> >
>> > at
>> >
>org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
>> >
>> > at
>> > org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
>> >
>> > at
>> > org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
>> >
>> > at java.lang.Thread.run(Thread.java:484)
>> > Root cause:
>> > <same as above>
>> >
>> > struts-config.xml has:
>> > <action path="/uidstart"
>> > type="com.cisco.nm.uid.struts.action.UidAction"
>> > scope="request"
>> > validate="false">
>> > <forward name="success" path="/engineresult.jsp"/>
>> >
>> > </action>
>> >
>> > Bill
>> >
>> > At 11:00 AM 6/18/2001 -0700, Craig R. McClanahan wrote:
>> >
>> >
>> >
>> >> On Mon, 18 Jun 2001, Peter Alfors wrote:
>> >>
>> >> > You do not need an ActionForm. You can read straight from the
>> >> form
>> >> > parameters in your action class as you mentioned.
>> >> >
>> >>
>> >> Yes, you can definitely do this. Of course, you give up the
>> >> automatic
>> >> stuff that Struts does for you (calling reset(), populating the
>> >> properties, and calling validate()) in this case.
>> >>
>> >> > Pete
>> >> >
>> >>
>> >> Craig
>> >>
>> >>
>> >> >
>> >> > Bill Firestone wrote:
>> >> >
>> >> > > I have hit upon the same problem as this thread, but I didn't
>> >> see a resolution.
>> >> > >
>> >> > > It seems that in Struts 1.0, there must be an ActionForm for
>> >> every page that has a form in it -- or, indeed, an ActionForm for
>> >> every form, including one for each form on a page.
>> >> > >
>> >> > > I had thought that I could have an Action class that would
>> >> read the FORM parameters directly, but that I would not need an
>> >> ActionForm for each screen.
>> >> > >
>> >> > > (One of the goals for Struts 1.1 seems to address this.)
>> >> > >
>> >> > > Is the above correct, or am I missing something?
>> >> > >
>> >> > > Thanks.
>> >> > >
>> >> > > Bill Firestone
>> >> > >
>> >> > > At 03:09 PM 4/30/2001 +0530, Tewathia, Atul wrote:
>> >> > > >I feel there is some problem.
>> >> > > >I tried the same thing but I get the following error on
>> >> console. It shows
>> >> > > >that it is trying to instantiate a form bean corresponding
>> >> to an action
>> >> > > >mapping. And if i am not specifying one it gives an error.
>> >> How do I handle
>> >> > > >this situation when I don't need a form ???
>> >> > > >
>> >> > > >OneForm instantiated
>> >> > > >TwoaeForm instantiated
>> >> > > >TwokeyForm instantiated
>> >> > > ><Apr 13, 2001 2:54:59 PM GMT+05:30> <Error> <HTTP>
>> >> > > ><[WebAppServletContext(446938
>> >> > > >,threeoseven)] Root cause of ServletException
>> >> > > >javax.servlet.jsp.JspException: Cannot retrieve definition
>> >> for form bean
>> >> > > >null
>> >> > > > at
>> >> org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:725)
>> >> > > > at
>> >> > >
>> >> >org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441)
>> >>
>> >> > > > at jsp_servlet._two._jspService(_two.java:345)
>> >> > > > at
>> >> weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
>> >> > > > at
>> >> > >
>> >> >weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
>> >>
>> >> > > >
>> >> > > >the config.xml used by me is here ...
>> >> > > >
>> >> > > ><struts-config>
>> >> > > > <form-beans>
>> >> > > > <form-bean name="oneForm"
>> >> type="org.apache.struts.myprog.OneForm"/>
>> >> > > > <form-bean name="twokeyForm"
>> >> > > >type="org.apache.struts.myprog.TwokeyForm"/>
>> >> > > > <form-bean name="twoaeForm"
>> >> type="org.apache.struts.myprog.TwoaeForm"/>
>> >> > > > </form-beans>
>> >> > > > <action-mappings>
>> >> > > > <action path="/One"
>> >> type="org.apache.struts.myprog.OneAction"
>> >> > > >name="oneForm">
>> >> > > > <forward name="Two" path="/Two.jsp" />
>> >> > > > </action>
>> >> > > > <action path="/Twoae"
>> >> type="org.apache.struts.myprog.TwoAction"
>> >> > > >name="twoaeForm">
>> >> > > > <forward name="Three" path="/Three.jsp" />
>> >> > > > </action>
>> >> > > > <action path="/Twokey"
>> >> type="org.apache.struts.myprog.TwoAction"
>> >> > > >name="twokeyForm">
>> >> > > > <forward name="Three" path="/Three.jsp" />
>> >> > > > </action>
>> >> > > > <action path="/Twoprev"
>> >> type="org.apache.struts.myprog.TwoAction">
>> >> > > > <forward name="One" path="/One.jsp" />
>> >> > > > </action>
>> >> > > > </action-mappings>
>> >> > > ></struts-config>
>> >> > > >
>> >> > > >
>> >> > > >-----Original Message-----
>> >> > > >From: Tobias Meyer [mailto:[EMAIL PROTECTED]]
>> >> > > >Sent: Wednesday, April 18, 2001 4:17 PM
>> >> > > >To: [EMAIL PROTECTED]
>> >> > > >Subject: RE: No ActionForm Bean Required
>> >> > > >
>> >> > > >
>> >> > > >Hi Stanley,
>> >> > > >
>> >> > > >> Let's say I have a link that allows a user to empty
>> >> his/her shopping
>> >> > > >> cart. The link to empty the cart points to "/empty.do".
>> >> I
>> >> > > >> do not believe
>> >> > > >> this requires an ActionForm bean (PLEASE, correct me if I
>> >> am
>> >> > > >> wrong). Nonetheless, I have specified an ActionForm Bean
>> >> > > >> because it is
>> >> > > >> required:
>> >> > > >>
>> >> > > >> <action path="/empty"
>> >> > > >> type="EmptyAction"
>> >> > > >> name="buyBean"
>> >> > > >> scope="request">
>> >> > > >> <forward name="success" path="/viewcart.jsp"/>
>> >> > > >> </action>
>> >> > > >>
>> >> > > >> The bean is NOT used and has nothing to do with emptying
>> >> the shopping
>> >> > > >> cart. Do I just accept that it works? Or am I designing
>> >> the program
>> >> > > >> wrong? Please help.
>> >> > > >
>> >> > > >You don't have to specifiy an ActionForm if you don't need
>> >> one.
>> >> > > >Watch the LogoffAction in the example shipped with struts:
>> >> > > >
>> >> > > ><!-- Process a user logoff -->
>> >> > > ><action path="/logoff"
>> >> > > > type="org.apache.struts.example.LogoffAction">
>> >> > > > <forward name="success"
>> >> path="/index.jsp"/>
>> >> > > ></action>
>> >> > > >
>> >> > > >Hope this helps,
>> >> > > >
>> >> > > >Tobias Meyer
>> >> >
>> >> >
>> >
