ActionForward Question

[Jazzy Sanchez]

How will I carry the ActionMessages or ActionErrors to the forwarding jsp if i use this:

return new ActionForward("/merchant.jsp?id="+num, true);

instead of this

return mapping.findForward("success");    

[Merrill Higginson]

ActionErrrors are stored in the request. You put them there by calling the saveErrors(..) method on your Action's superclass. This process is the same no matter which method you use to return an ActionForward.

[Jazzy Sanchez]

Hi Merrill. There's no problem when I use this to return actionforward:

return mapping.findForward("success");


But using this doesn't render the proper error messages.

return new ActionForward("/merchant.jsp?id="+num, true);

This is the code in my jsp file that suppose to print out any error or successful message:

<html:messages id="msg" message="true">
<div class="boxgreen" style="padding: 5px;">
<img src="images/tick.png">
<bean:write name="msg" />
</div>
</html:messages> 
 
<html:messages id="msg" property="err">
<div class="boxredish" style="padding: 5px;">
<img src="images/exclamation.png">
<bean:write name="msg" />
</div>
</html:messages>
    

[Merrill Higginson]

The problem is with the second parameter of the ActionForward constructor. If you specify true for this parameter, that means that the sendRedirect() method will be called on the HTTPServletResponse object. When this happens, a new request is generated, meaning any objects associated with the old request, including error messages are now out of scope. You can fix this either by specifying false for this parameter, or by calling the saveErrors(session, errors) method, which puts the errors in the HTTPSession rather than the request.

[Jazzy Sanchez]

It did work. For the sake who may get in this trouble this is what i did exactly:

    
saveMessages(request.getSession(), messages);
return new ActionForward("/b/"+reviewForm.get("merchantid"), true);

[Swathi Sri]

Thank you. That helps!!