zk portlet is invisible

[Kiran Alla Kumar, modificado hace 15 años.]

Hi,
i am very new to liferay. i successfully deployed structs portlet. in the same way i created zk portlet in ext.
1. when i deployed its done with out any error.
2. when i run the application. i am able to add the portlet using "Add application"
after adding i have checked the server log. there is an error.

04:35:36,531 ERROR [SerializableSessionAttributeListener:52] org.zkoss.zk.ui.htt
p.SimpleSession is not serializable and will prevent this session from being rep
licated




I am able to deploy zk portlet by creating war file in auto deployment directory. Please help me to resolve this issue

Thanks in advance.

[Manish Kumar Gupta, modificado hace 15 años.]

If you try to set session attribute which is does not implements Serializable interface, you get this error message. Your SimpleSession class should implement Serializable interface to avoid this error message.