<dependency> <groupId>org.valdr</groupId> <artifactId>valdr-bean-validation</artifactId> <version>1.2.0</version> </dependency> public class User { private String username; } <mvc:annotation-driven validator="valdrValidator"/> <bean id="valdrValidator" class="org.valdr.ValdrBeanValidatorFactoryBean"> </bean> @RequestMapping(value = "/user", method = RequestMethod.POST) public ResponseEntity<String> createUser(@Valid @RequestBody User user) { } private String username;