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how to share data between servlet in different webapplication

rehans oberoi
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Joined: Dec 06, 2005
Posts: 174
servlet A receives a request that it forward to servlet B
within another web application in the same web container
servlet A need to share data with servlet B and data must be
not visible to other servlets in A's web application
in which object can the data that A shares with B be stored

1. http session
2.servletconfig
3.servletcontext
4httpservletrequest
5httpservletresponse

hi ranchers
please tell the answer
according to me answer must be 4 or 5
ramprasad madathil
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Joined: Jan 24, 2005
Posts: 489


servlet A receives a request that it forward to servlet B
within another web application in the same web container


It may not be that simple. You cannot forward outside your 'context'. You could ofcourse, always, redirect.


servlet A need to share data with servlet B


Date could be stored in
1. db
2. a serialized object

You cannot store it in the standard servlet api objects, not even the context object.

ram.
Adeel Ansari
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Joined: Aug 15, 2004
Posts: 2874
Originally posted by ramprasad madathil:
Data could be stored in
1. db
2. a serialized object


In addition you can redirect it from one to another in the URL, if its like parameter string.
rehans oberoi
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Joined: Dec 06, 2005
Posts: 174
hi

which is the most suitable answer
please tell
rehans oberoi
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Joined: Dec 06, 2005
Posts: 174
we can redirect it by httpservletrequest object
so can it be appropriate
Adeel Ansari
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Joined: Aug 15, 2004
Posts: 2874
Originally posted by rehans oberoi:
which is the most suitable answer


It depends, what kind of data you want to share.

If simple strings then you can use URL approach. Otherwise, db, serialized objects, ldap, web services, etc are other means of sharing data.
Adeel Ansari
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Joined: Aug 15, 2004
Posts: 2874
This thread might be helpful.
Manoj Kumkumath
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Joined: Dec 01, 2005
Posts: 71
I feel one option will be to use HttpURLConnection. From the first servlet wecan make a connection to second servlet using this class. Using HttpURLConnection will ensure that the communication is only between two Servlets and helps you two transfer the data without constraints.
Malatesh Karabisti
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Joined: Jul 28, 2010
Posts: 153

As far as I know, JAVA EE specification does't talk about share the data between two web application context. You can't share data either in Request or Response object. You may have reconsider you design.

Hope that helps.
 
 
subject: how to share data between servlet in different webapplication