I have Spring REST webserivce Now from a mobile client webservice is getting called. First, login method is called for log in succes or failure based on sent value userid and p
You need to integrate spring security in your project and make your rest calls via authentication verifier tokens.
You may refer to the documentation :
http://projects.spring.io/spring-security/
Or this nice tutorial can jumpstart your implementation :
http://www.networkedassets.com/configuring-spring-security-for-a-restful-web-services/