Http post does not work in portlet

Question

Hi,
I have a simple portlet that has a form using http post. When I submit the portal page just displays a blank page. And request parameter name is prefix by only "_pirefnull" :
<INPUT TYPE="hidden" name="_pirefnull.param1" value="hello" />
When I call this funtion:
pReq.getRenderContext().getBackURL()
it also returns null.
Sample code is as follows:
<form      name="frmPage"
                    action="<%=HttpPortletRendererUtil.htmlFormActionLink(pReq,PortletRendererUtil.PAGE_LINK)%>"
                    method="get" >
<%=HttpPortletRendererUtil.htmlFormHiddenFields(pReq, PortletRendererUtil.PAGE_LINK) %>
<input      type="hidden"
                    name="<%=HttpPortletRendererUtil.portletParameter(pReq, "next_page")%>"
                    value="htdocs/myportlet/Page2.jsp" />
<input type="hidden" name="<%=HttpPortletRendererUtil.portletParameter(pReq, "param1")%>" value="hello"/>
<input type="submit" name="btnSubmit" text="Submit"/>
<input type="button" name="btnCancel" value="Return" onClick="javascript:window.location='<%=pReq.getRenderContext().getBackURL()%>'"/>
</form>
This works in my development portal. However, it doesn't work in the production portal.
Is there any version of the portal that only works on HTTP get method? How do I solve this problem. Any information would be very much appreciated.
Rachel

Answer 1

Rachel,
there doesn't seem to be any problem in your code. Though I'm a bit surprised with the null values that you seem to be getting. Could you condirm the folowing the for me:
1. Are you hitting the JSP directly or is the request to render coming from Portal? If you hit it directly then things like PortletRenderRequest will be null.
2. Could you find out what exactly is null - PorltletRenderRequest, RenderContext?
3. Why are you using HTTP GET for form submission? Can't you use POST for this?
4. Do you see any errors in your application.log file? Might be helpful for debugging.
5. What are the versions of your dev and producttion portals? What's the JPDK version you using?
Regards,
Abhinav