Hi, On Tue, Sep 21, 2021 at 6:57 AM Arunachalam Sibisakkaravarthi < arunacha...@mcruncher.com> wrote:
> Hi guys, > User Session goes null and other user 's session is updated wrongly. > > I keep track of session instances in a map with username as key > Where do you keep this map ? I guess in some custom implementation of HttpSessionListener ?! > The following happens in a scenario > Assume 3 users (foouser, baruser, foobaruser) are there in the system > > 1. foouser was logged in > 1.a) Session (id is 1) is stored in the map > 2. baruser was logged in > 2.a) Session (id is 2) is stored in the map > 3. Session has expired for baruser > 3.a) Trying to remove the baruser's session entry from the map > 3.b) Got NullPointerException while accessing the session for baruser > stored in the map, because somehow the session was null, so I couldn't > remove the entry from the map for baruser > 4. foobaruser was logged in > 4.a) Session (id is 3) is stored in the map > 4.b) Session (id as 3) is updated in the map for baruser > > I have two questions > 1. How was the baruser's session set to null? (step 3.b) > 2. Why baruser's session was updated to the id which belongs to newly > logged in user? (step 4.b)? > > Please help me to understand the problem. > Since the map is managed in your application code we cannot tell you without seeing your code. > > > > *Thanks And RegardsSibi.ArunachalammCruncher* >
