CODEWITHSUNDEEP
javajspservletssession-variables
Dennis
Dennis

Reputation: 4017

Cannot cast from Object to boolean

This is the error I am receiving,

org.apache.jasper.JasperException: Unable to compile class for JSP: 

    An error occurred at line: 13 in the jsp file: /index.jsp
    Cannot cast from Object to boolean

This is my code:

Controller Servlet

if(authentication.verifyCredentials(request.getParameter("username"), 
   request.getParameter("password")))
{
        session.setAttribute("username", request.getParameter("username"));
        session.setAttribute("loggedIn", true);
        dispatcher.forward(request, response);   
}

I also tried this,

session.setAttribute("loggedIn", new Boolean(true));

JSP

<% 
    if(session.getAttribute("loggedIn") != null)
    {
        if(((boolean)session.getAttribute("loggedIn")))
        {
            response.sendRedirect("Controller"); 
        }
    }   
%>

Yes I researched and also saw the previous stackoverflow post; however I still cannot resolve my problem. Please assist.

Upvotes: 20

Views: 31064

Answers (2)

dantuch
dantuch

Reputation: 9293

try with 

   if(((Boolean)session.getAttribute("loggedIn")))

instead of:

   if(((boolean)session.getAttribute("loggedIn")))

attribute has to be taken as Boolean, not as primitive type

Upvotes: 8

ChristopheD
ChristopheD

Reputation: 116207

Try casting it to Boolean (nullable) instead of boolean in the JSP:

if(((Boolean)session.getAttribute("loggedIn")))
{
    response.sendRedirect("Controller"); 
}

Upvotes: 23

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