How Action class in struts2 Handle Multithreading

@ajay-pandey-Zkxqb6 • Oct 22, 2024

Oct 22, 2024

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How Action class in Struts2 handle multiple requests from client.Action class is not thread safe in struts2.How to handle concurrent requests.................

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Anoop Kumar

@anoop-kumar-GDGRCn • Nov 20, 2013

They don't have mutable class objects.
If action class will have mutable class object then it will be problematic in mutithreading.
Ajay Pandey

@ajay-pandey-Zkxqb6 • Nov 20, 2013

My question is how action class in struts2 ensure concurrency(thraed safty)...... I know action class is normal java class.I am working as java developer since last 2 year.Now my application working in multithreaded enviorment and its working fine .But how action class work........?
Anoop Kumar

@anoop-kumar-GDGRCn • Nov 20, 2013

I don't have access to machine right now.
I think there is saparate action classes classes are instantiated for each request.
Can you make a instance variable and keep in loop in execute method. See how it works ?
But I am sure there only one object cearted for FilterDispature servlet.
Ajay Pandey

@ajay-pandey-Zkxqb6 • Nov 20, 2013

thanks ianoop.I highely appreciated ur valuable responce.
I got answer from my "black book for struts2".Struts 2 Action objects are instantiated for each request, so there are no thread-safety issues.Actually FilterDispature servlet object created wn request maps in web.xml to varify url and call for ActionMapper class.
Anoop Kumar

@anoop-kumar-GDGRCn • Nov 20, 2013

Yes this is difference between struts 1 and 2 .
In struts 1 only one object of action will be created.
micheal john

@micheal-john-l1fIn3 • Nov 28, 2013

ianoop
Yes this is difference between struts 1 and 2 .
In struts 1 only one object of action will be created.

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