JSR 303 Validator injection with Spring in Jersey classes
I encountered a strange behaviour that I didn't manage to explain, with a validator injection in a Jersey class with DI managed by Spring.
To sumerize the situation :
I'm using Jeysey 2 and Spring 4 to produce REST web services using the jax-rs specification, and I'm validating the bean with the jsr303 bean validation annotations. The bean validation implementation is Hibernate Validator, bundled within jersey-bean-validation dependency.
Here is my POM:
<jersey.version>2.26-b07</jersey.version>
...
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.ext</groupId>
<artifactId>jersey-spring4</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.ext</groupId>
<artifactId>jersey-bean-validation</artifactId>
<version>${jersey.version}</version>
</dependency>
In my spring configuration, I declare a Validator bean (with a custom message interpolator to retrieve the error messages in database), which I'll later want to inject in my web service classes :
@Bean
public Validator getValidator(MessageInterpolator messageInterpolator){
return Validation.byDefaultProvider().configure()
.messageInterpolator(messageInterpolator)
.buildValidatorFactory()
.getValidator();
}
At this point, I'm able to inject my validator in Jersey classes using the @Autowired annotation, but not with the jsr 330 @Inject annotation which inject another validator with the default Hibernate Validator message interpolator...
@Autowired
private Validator validator; // OK
@Inject
private Validator validator; // KO
@Inject
private OtherService otherService; // OK
Can you explain me what happen here ?
I understood that the dependency injection implementation bundled with Jersey is HK2, but the jersey-spring plugin is supposed to do the bridge between HK2 and Spring, I must have missed something because they seem completely dissociated, I think that :
By the way I'm perfectly able to inject my other Spring services with the @Inject annotation, that's why I'm loosing my mind and don't know what to think... The only problematic bean seems to be this Validator.
I also tried to use the @Valid annotation to validate my beans without having to inject the validator, and the problem is the same : Jersey use the default validator from Hibernate Validator...
After lots of time, I found a way to fix the @Valid problem by creating a ContextResolver Provider to modify Jersey default configuration with my custom message interpolator :
@Provider
public class ValidationConfigContextResolver implements ContextResolver<ValidationConfig> {
private final MessageInterpolator messageInterpolator;
@Inject
public ValidationConfigContextResolver(MessageInterpolator messageInterpolator) {
this.messageInterpolator = messageInterpolator;
}
@Override
public ValidationConfig getContext(Class<?> aClass) {
final ValidationConfig config = new ValidationConfig();
config.messageInterpolator(messageInterpolator);
return config;
}
}
Now Jersey use a validator with my message interpolator but I'm still trying to understand why I'm not able to inject it with the @Inject annotation in Jersey classes !
Thanks for the assistance
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