I\'ve tried to have a controller in Spring return a JSON response to no avail using the Jackson classes as recommended with 3.0. I\'ve got the jackson jar files(jackson-core
May be my answer is a bit late, but it may help some one else visiting this question.
I got my problem resolved by adding
hibernate-validator-4.0.2
and gave me another exception (class not found exception: org.slf4j.LoggerFactory) which i resolved by adding
slf4j-api-1.5.6.jar
I hope it will help someone.