Balkan,
which line is line 26 in edit action? Can you provide the entire stack trace?
Off hand I would guess that your call to request.getAttribute("key")
is returning null...I don't see any other likely suspects.
Your JSP does this:
pageContext.setAttribute("key",key); what is pageContext?
if you are putting a variable in page scope, it will not be available
for the action when you repost to the server...you have a new page
scope (which is different from request scope) when you come back to
the server. If you want a variable to live across multiple trips to
the server, try putting it in the session.
On 8/15/05, Balkan Guler <[EMAIL PROTECTED]> wrote:
> hello,
> I have a action form operForm and List operMenus field. operMenu is an
> other class that has some field.
> I am listing all of the operMenu objects and their fields.
> At the end of the each row I have an edit link that sends, its row's primary
> key to an action.
> operMenu class has two primary key and I instantiate a hashmap and put the
> primary keys into hashmap.
> In action class I want to get the hashmap but I am taking null pointer
> exception.
> <logic:iterate id="omenu" indexId = "count" name="operForm"
> property="operMenus">
> <tr >
> <td class ='row<%=count.intValue() %2 %>'> <bean:write name="omenu" property
> =" compositeId.projectname"/></td>
> <td class ='row<%=count.intValue() %2 %>'> <bean:write name="omenu" property
> ="compositeId.seqno"/></td>
> <td class ='row<%= count.intValue() %2 %>'> <bean:write name="omenu"
> property ="parentseqno"/></td>
> <td class ='row<%=count.intValue() %2 %>'> <bean:write name="omenu" property
> ="groupseqno"/></td>
> <bean:define id="projectName" name="omenu" property="compositeId.projectname
> "/>
> <bean:define id="seqNo" name="omenu" property="compositeId.seqno "/>
> <%java.util.HashMap key = new java.util.HashMap();
> key.put("projectname", projectName);
> key.put("seqno", seqNo);
> pageContext.setAttribute("key",key);%>
> <td class = 'row<%=count.intValue() %2 %>'><html:link action ="edit"
> paramId="index" paramName="key">Edit</html:link></td>
> </tr>
> </logic:iterate>
> -*************************************************************
> editAction:::::::::::::::
> public ActionForward execute(ActionMapping mapping, ActionForm form,
> HttpServletRequest request, HttpServletResponse response) throws Exception {
>
> java.util.HashMap keymap = (java.util.HashMap)request.getAttribute("key");
>
> String projectname = (String)keymap.get("projectname");
> String seqno = (String)keymap.get("seqno");
>
> System.out.println(projectname);
> return mapping.findForward(FORWARD_detail);
> }
> And the error message:
> java.lang.NullPointerException
> at actions.editAction.execute(editAction.java:26)
> What is the problem??
>
>
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