Issue with JSF <f:view> tag

[vaalati]

Hi,
I am trying to use JSF to develop a portlet and when I load the Portlet in a page I get an error which says

javax.portlet.PortletException: Org.apache.jasper.JasperException:Exception in JSP

And this exception points to the line in the JSP where the <f:view> tag is defined. I have pasted the code in my JSP below. Could some one please tell me what is wrong with it and why I am getting the error.

I am extending the GenericPortlet to write my own Portlet class. I hope this should not be an issue, correct?

Thanks much,
Vijay



<%@ page language="java" session="true" %>
<%@ page import = "java.util.HashMap" %>
<%@ page import = "javax.swing.*" %>
<%@ page import = "javax.portlet.PortletSession" %>

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="/WEB-INF/tld/portlet.tld" prefix="portlet" %>

<portlet:defineObjects/>

<portlet:actionURL var="loginAction">
<portlet:param name="command" value="doLogin" />
</portlet:actionURL>

<%
HashMap dbMap = new HashMap();
dbMap.put((Object)(new String("DB 1")),(Object)(new String("1")));
dbMap.put((Object)(new String("DB 2")),(Object)(new String("2")));
%>



ADM Login Page


<f:view>
</f:view>

[ssilvert]

You need to extend MyFacesGenericPortlet instead.

See http://wiki.apache.org/myfaces/Using_Portlets

Stan
http://jsf.jboss.org

[vaalati]

Hi Stan,
Thanks for help. Actually I had figured that out the hard way just a while ago before I received your reply.

But now I ran into another issue. I wrote a JSF code in which I have a text-field (<h:inputText>) and I want to access the value entered in it in my portlet class which I wrote extending the MyFacesGenericPortlet. So how do I access it?s value? Usually in Servlets we can do this by using the request.getParameter(). Below is my code in which I have the text-field (<h:inputText>). Now how do I access it?s value in my portlet class?


-----------------------------------------------------------------
<%@ page language="java" session="true" %>
<%@ page import = "javax.portlet.PortletSession" %>

<%@ page language="java" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="/WEB-INF/tld/portlet.tld" prefix="portlet" %>
<f:loadBundle basename="altair.adm.login.messages" var="msg"/>
<portlet:defineObjects/>
<portlet:actionURL var="loginAction">
<portlet:param name="command" value="doLogin" />
</portlet:actionURL>



ADM Login


<f:view>

<h:form>
<h:panelGrid columns="2">
<h:outputText value="#{msg.user_id_tag}" />
<h:inputText value="" required="true" id="ADM_USER_ID" />
<h:commandButton action="#{loginAction}"
value="#{msg.login_button_tag}" id="ADM_LOGIN_BUTTON"/>
</h:panelGrid>

</h:form>

</f:view>



-----------------------------------------------------------------


Thanks,
Vijay

[ssilvert]

portletRequest.getParameter()

[vaalati]

Hi Stan,

Are you saying that if I have the below form element:

<h:inputText value="" required="true" id="ADM_USER_ID" />


Then I can access the above field value in my portlet's doView() method (which extends MyFacesGenericPortlet) using renderRequest.getParameter(paramName) ?

If that is so, then getParameter(paramName) accepts the name of the field and not the ID of the field, right? Then in the above code I do not have a name for the field but I have an ID. So how do I access it's value now? Is there some thing more that I need to do?

Please help.

Thanks much,
Vijay

[ssilvert]

If you have also given the surrounding form an id then the param name will be something like "formid:ADM_USER_ID". If not, JSF will make up its own id.

Stan

[ssilvert]

BTW, doing this inside portlet code is not the recommended way to access the param. You should do it inside the JSF framework if possible.

Stan
http://jsf.jboss.com

[vaalati]

Hi Stan,
I tried the following ways but could not succeed:

1)FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("vijay_form:ADM_USER_ID");
2) ((PortletRequest)request).getParameter("vijay_form:ADM_USER_ID");
3) request.getParameter("vijay_form:ADM_USER_ID");
4)FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("ADM_USER_ID");


I tried quickly going through the MyFaces link you sent previously. But I could not find (probably I missed a lot..to be read) any help where I could know how to retrieve the value.

But in your previous reply you were mentioning that my approach was not correct. Could you please explain and/or give more details into what should be my approach to retrieve the values.

I really appreciate your time on my issue. I am a beginner and I do not have much help from anyone who might know/worked with JSF before.

Thanks very much,
Vijay

[ssilvert]

I'm sorry. I don't have time to give you an individual tutorial. There are plenty of good books at the bookstore and good tutorials on line.

Stan

[vaalati]

Hi Stan,

Instead of JSF, I moved my code to JSP and wrote my portlet extending the GenericPortlet. Now I try to access the request.getParameter() and it still gives me a null return. So what I am thinking here is that is there any setting/configuration that I need to do in JBoss portal/application server and due to which I am having this problem of not being able to access the form parameters using request.getParameter()?

Please help.

Thanks,
Vijay