Getting error on jsp page

Question

I am getting following error on my jsp. May be it's appearing due to session timeout but how to handle it:

org.apache.jasper.JasperException: An exception occurred processing JSP page /navbar.jsp at line 23

And my code is:

20:                         <li><a href="homepage.jsp"><i class="icon-home"></i> Dashboard</a></li>
21: 
22:                         <li><a href="MenuTeamMember.jsp"><i class="icon-group"></i> Team</a></li>
23:                         <%if (session.getAttribute("role").equals("National_Head") || session.getAttribute("role").equals("Admin")) {%>
24:                         <li class="dropdown">
25:                             <a href="#" class="dropdown-toggle" data-toggle="dropdown"><i class="icon-globe"></i> Distribution<b class="caret"></b></a>
26:                             <ul class="dropdown-menu">

My guess would be that `session.getAttribute("role")`returns `null`. — Klas Lindbäck, Oct 25 '13 at 07:42

score 0 · Answer 1 · answered Oct 25 '13 at 07:45

0

Your session.getAttribute("role") may return null. Change your condition like below than see what is happend.

<%if ("National_Head".equals(session.getAttribute("role")) 
     ||       "Admin".equals(session.getAttribute("role")) {%>

In case of String equals first use fixed value (i.e "National_Head") which will never throw any NPE.

answered Oct 25 '13 at 07:45

Masudul

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`getAttribute returns Object`. Not `String`. – Suresh Atta Oct 25 '13 at 07:48
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And `equals` method want an `Object`, so it should be fine. – YMomb Oct 25 '13 at 07:51

score 0 · Accepted Answer · edited May 23 '17 at 11:50

0

Steps to come out of this:

1.Check for session.getAttribute("role") null or not

2)getAttribute returns Object,So you dhould cast it to String to check.

 <%if ((String)session.getAttribute("role").equals("National_Head") ||
                   (String)session.getAttribute("role").equals("Admin")) {%>

3)Immeadiatly read : How to avoid Java code in JSP files?

edited May 23 '17 at 11:50

Community

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answered Oct 25 '13 at 07:46

Suresh Atta

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If getAttribute returns Object than no problem for equals method. – Masudul Oct 25 '13 at 07:49

Getting error on jsp page

2 Answers2