You can use the following components to implement competing consumers:-
Enabling Competing Consumers with JMS
To enable Competing Consumers you just need to set the concurrentConsumers property on the JMS endpoint.
or in Spring DSL
Using This Pattern
If you would like to use this EIP Pattern then please read the Getting Started, you may also find the Architecture useful particularly the description of Endpoint and URIs. Then you could try out some of the Examples first before trying this pattern out.