Check for empty session variable
Hey there we're making a login for our jsp web application.
The login allready works and so does the log out but now we want to make a check to make it impossible to login with names that are not in the database.
So what basicly happens is as follows...
Login reads the database info:
while (rs.next()){
if (request.getParameter("username").equals(rs.getString("username")) && request.getParameter("password").equals(rs.getString("password"))){
session.setAttribute("username", rs.getString("username"));
session.setAttribute("firstname", rs.getString("first_name"));
session.setAttribute("lastname", rs.getString("last_name"));
}
}
but when you enter invalid information teh session variabe "lastname" for example should readnull. Now we want to make a check for this null value, which should look something like this:
if(session.getAttribute("username").equals(null)){
response.setStatus(301);
response.setHeader("Location","/index.jsp");
}else{
response.setStatus(301);
response.setHeader("Location","/mainmenu.jsp");
}
But this doesnt work, it just logs in with the null values... any1 got a clue?
edit: im actually looking for something like the isSet command in PHP to give an idea...
Message was edited by:
whappit
