Martin,
I override the validate method in my ActionForm, but the overriding method did nothing but return the result of a call to super.validate(). This didn't seem to make any difference.
Then I made a functional change (for an unrelated problem). There were a couple work fields stored in the form bean (ActionForm), called userAction and systemAction, that were being used to determine which buttons to display based on what the user was trying to do. I removed the field called systemAction..... And when I ran the next test, the system did a doPost but did not follow that with a doGet. I can't begin to imagine how this could have solved the problem.... I'm quite confused, but this one page seems to be working correctly now.
There is one more page that does a doPost and then a doGet before the next page is displayed. However, the action class for that page is forwarding control to another action class rather than to a JSP. So I suspect that doPost / doGet is correct. (Or else there is a different problem there.)
At any rate, thanks very much for your help.
Dom
Martin Gainty wrote:
Personally yes I would advise override the validate method Here is the relevant doc http://struts.apache.org/api/org/apache/struts/action/ActionForm.html (most notably implementing Serializable) with the end result to display the ActionError message /*and ultimately */.. process the message returned by ActionError Keep in mind if your validate method returns null you will pass to Action.execute HTH, Martin- ----- Original Message ----- From: "Dom Incollingo" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <user@struts.apache.org> Sent: Sunday, April 03, 2005 7:30 PM Subject: Re: Form Submitted Twice
Martin,
My ActionForm subclasses the struts ValidatorForm class. But it does not override the validate method. It just uses whatever validate method it inherits. I checked the source code for the version of ValidatorForm I am using (the one that came with Struts 1.2.4), and it returns an ActionErrors object.
Does the validate method need to be overridden in the ActionForm subclass? Thanks.
Dom
Martin Gainty wrote:
Dom- This depends on the return of your ActionForm validate method If you can show us the code and I'll take a look at it tonite Thanks, Martin- ----- Original Message ----- From: "Dom Incollingo" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <user@struts.apache.org> Sent: Sunday, April 03, 2005 4:25 PM Subject: Re: Form Submitted Twice
Martin,
Thanks very much for the info.
I've tried to follow this pattern, both in the servlet-mapping in the web.xml:
<servlet-mapping> <servlet-name>pets</servlet-name> <url-pattern>/action/*</url-pattern> </servlet-mapping>
and in the action element in the struts-config:
<action path="/petDetail" type="com.dom.struts.pets.action.PetDetailAction" scope="request" name="petDetailForm" validate="true" input="/petDetail.jsp"> <forward name="OwnerList" path="/action/getOwnerList"/> <forward name="OwnerDetail" path="/action/ownerDetail"/> <forward name="PetList" path="/action/getPetList"/> <forward name="Success" path="/petDetail.jsp"/> <forward name="Failure" path="/petDetail.jsp"/> <forward name="Logoff" path="/action/logout"/> </action>
Evidently, something is not set up correctly, but it's not obvious to me where the problem lies. I'm trying to step thru debug (using Eclipse with Tomcat) to see if I can figure out what struts is having a problem with.
Thanks.
Dom
Martin Gainty wrote:
Dom Apparently the action tag was not setup properly to ensure validation
before
posting to RequestProcessor To quote James Goodwill and Rick Hightower For the purposes of simplicity, our sample legacy Web resource will be
a
servlet. Essentially, you want the servlet's doGet method to be called
only
if the ActionForm validates e.g. <servlet-mapping> <servlet-name>legacy</servlet-name> <url-pattern>/legacy/roar</url-pattern> </servlet-mapping>
Thus, posts to /legacy/roar would cause this servlet's doPost method to
be
called. Now, to map this servlet as an action that acts as a form
handler,
you need to do this:
<action path="/legacy" forward="/legacy/roar" input="/form/userForm.jsp" name="userForm" parameter="/legacy/roar" validate="true" scope="request" /> thus validate attribute is set to true in the action mapping for this
servlet, so
the execute method of the ForwardAction is called ONLY if the
ActionForm
(UserForm) validates (returns no ActionError objects).
Makes sense? Martin-
----- Original Message ----- From: "Dom Incollingo" <[EMAIL PROTECTED]> To: "Struts User" <user@struts.apache.org> Sent: Saturday, April 02, 2005 6:34 PM Subject: Form Submitted Twice
Hello,
I'm using Struts 1.2.4 (along with the validator framework), and I've noticed that for my forms that do a Post, the action class is executed twice. I put log statements in my Action class, in the validator classes, in the Struts ActionServlet, and in the JSP to try to figure out what is happening. The sequence of events is as follows:
- User presses Update button on a JSP - doPost method invoked (ActionServlet) - Struts validation methods invoked - execute method (Action class) entered - execute method (Action class) returns forward action of Success - processing returns to the same JSP
.........................................................................
- doGet method invoked (ActionServlet) - Struts validation methods invoked - execute method (Action class) entered - processing returns to the same JSP - web page is displayed on browser
Everything prior to the doGet looks normal. I can't understand why
the
JSP submits a Get request when it should display. The method
specified
in the JSP's form (there is only one form in the JSP) is a Post, not a Get. The JSP does not contain any form submission via JavaScript.
I also notice that if I change the method in the JSP's form from Post
to
Get, this problem goes away: the form is submitted only once!
In a related problem, I have a JSP that does have a form with a method of Get, but the user never clicks on a button to submit the form. Instead, the user clicks on a link with a value like:
http://localhost:8080/pets/action/petDetail?userAction=Display&type=Pet&id=2
I expect processing to go to the Action class associated with 'petDetail'. Processing does go there, but first a 'doGet' is
processed
in the ActionServlet, even though a form was not submitted.
Has anyone seen these problems or know what is happening here?
Thanks
very much for your assistance.
Dom
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