LocalDateParamConverterProvider.java

import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.time.LocalDate;

import javax.ws.rs.ext.ParamConverter;
import javax.ws.rs.ext.ParamConverterProvider;
import javax.ws.rs.ext.Provider;

@Provider
public class LocalDateParamConverterProvider implements ParamConverterProvider {

    @SuppressWarnings("unchecked")
    @Override
    public <T> ParamConverter<T> getConverter(Class<T> rawType, Type genericType, Annotation[] annotations) {
        if (rawType.isAssignableFrom(LocalDate.class)) {
            return (ParamConverter<T>) new LocalDateParamConverter();
        }
        return null;
    }

    public static class LocalDateParamConverter implements ParamConverter<LocalDate> {

        public static final String DATE_PATTERN = "yyyyMMdd";

        @Override
        public LocalDate fromString(String param) {
            return LocalDate.parse(param);
        }

        @Override
        public String toString(LocalDate date) {
            return date.toString();
        }
    }

}