Hello Krishna,
As far as I know, Couchbase does not have an integration with Spring. Depending of your need your should be able to use the Spymemcached one. In this case you wont have access to all the features that client SDKs provides to the applications (Cluster Topology awareness for example)
Can you describe the type of features you are expecting from a Spring/Couchbase integration to see what could be done and see if somebody in the community is interested to participate to such development.
Regards
Tug