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session in struts2

 
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i came across a login example in apache website can please explain me what this means

#session.login


thank you
 
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Struts uses OGNL to identify resources in the value stack.
The '#' character indicates a non-root entity (the action is usually the root) 'session' indicates the user session and 'login' indicates a session parameter named 'login'.
 
deep rai
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thanks joe
 
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