According to the Jersey documentation , for a class to be supported as a @QueryParam , it must meet the following requirements:
Being a primitive type;
Has a constructor that accepts only String as an argument;
Have a static method whose name is fromString or valueOf and accept only String as argument;
Have an implementation of the javax.ws.rs.ext.ParamConverterProvider interface that returns an instance of the javax.ws.rs.ext.ParamConverter interface, or;
Be a List<T> , Set<T> or SortedSet<T> , where T satisfies options 2 or 3.
The only criterion that the Date class satisfied was 2, but since the Date(String) constructor was marked as @Deprecated (obsolete), the Jersey developers opted for stop supporting it from Jersey 2.x.
So the only option left is to implement a javax.ws.rs.ext.ParamConverterProvider and register it. Example:
public class DateParamProvider implements ParamConverterProvider {
@SuppressWarnings("unchecked")
@Override
public <T> ParamConverter<T> getConverter(final Class<T> rawType, final Type genericType,
final Annotation[] annotations) {
if (rawType != Date.class) {
return null;
}
//TODO teste se esse é realmente o formato utilizado pelas suas datas
final DateFormat format = new SimpleDateFormat("EEE MMM dd yyyy HH:mm:ss 'GMT'Z");
return (ParamConverter<T>) new ParamConverter<Date>() {
@Override
public Date fromString(final String value) {
try {
return format.parse(value);
} catch (final ParseException e) {
throw new IllegalArgumentException(e);
}
}
@Override
public String toString(final Date value) {
return format.format(value);
}
};
}
}
And register it (this will depend on how you configured your project, eg via javax.ws.rs.core.Application , web.xml or org.glassfish.jersey.server.ResourceConfig ):
javax.ws.rs.core.Application
//TODO ajuste para o caminho da sua aplicação
@ApplicationPath("/")
public class InitApp extends Application {
@Override
public Set<Class<?>> getClasses() {
Set<Class<?>> classes = new HashSet<>();
classes.add(SuaClasseAnotadoComPath.class); //Sua classe anotado com @Path
classes.add(DateParamProvider.class);
return classes;
}
}
org.glassfish.jersey.server.ResourceConfig
//TODO ajuste para o caminho da sua aplicação
@ApplicationPath("/")
public class InitApp extends ResourceConfig {
public InitApp() {
register(SuaClasseAnotadoComPath.class); //Sua classe anotado com @Path
register(DateParamProvider.class);
}
}
Another simpler solution would be to get the parameter as a String and, within the method itself, to convert to Date .
Note: If there is no obligation to use the Date class, take a look at new classes inserted in Java 8 from the java.time package, in this case in particular, in the ZonedDateTime class (even with this class, use of an implementation of javax.ws.rs.ext.ParamConverterProvider is still required).
