Spring Data MongoDB with Java 8 LocalDate MappingException

Question

I try to use the LocalTime from Java 8 Date Time API with Spring Data MongoDB. Inserting the document works as expected, but when I try to read the document, I get the follo

Answer 1

I wrote this little bit of code for all 4 of these conversion options:

• DateToLocalDateTimeConverter
• DateToLocalDateConverter
• LocalDateTimeToDateConverter
• LocalDateToDateConverter

Here is an example

public class DateToLocalDateTimeConverter implements Converter<Date, LocalDateTime> {

    @Override 
    public LocalDateTime convert(Date source) { 
        return source == null ? null : LocalDateTime.ofInstant(source.toInstant(), ZoneId.systemDefault()); 
    }
}

All example here.

Then by including this in the xml configuration for the mongodb connection I was able to work in java 8 dates with mongodb (remember to add all the converters):

<mongo:mapping-converter>
    <mongo:custom-converters>
        <mongo:converter>
            <bean class="package.DateToLocalDateTimeConverter" />
        </mongo:converter>
    </mongo:custom-converters>
</mongo:mapping-converter>

Answer 2

Now problem is resolved: https://jira.spring.io/browse/DATAMONGO-1102

But Spring Data doesn't support ZonedDateTime now, only Local.

Answer 3

This is currently not supported mostly due to the fact that MongoDB doesn't support storing Java 8 date time types right now. I suggest to turn the internal property into a legacy Date one and do the conversions on the API of the domain class (as you would do with Hibernate and JodaTime e.g.).