How to make Spring Data Elasticsearch work with java.time.LocalDateTime for date

Question

I am using Spring Data support for Elasticsearch. Here is the timestamp field mapping:

@Field(type = FieldType.Date, index = FieldIndex.not_analyzed, store =         


        

Answer 1

Check https://github.com/spring-projects/spring-data-elasticsearch/wiki/Custom-ObjectMapper to add JavaTimeModule to your ObjectMapper.

@Configuration
public class ElasticSearchConfiguration {

  @Bean
  public ElasticsearchTemplate elasticsearchTemplate(Client client) {
    return new ElasticsearchTemplate(client, new CustomEntityMapper());
  }

  public static class CustomEntityMapper implements EntityMapper {

    private final ObjectMapper objectMapper;

    public CustomEntityMapper() {
      objectMapper = new ObjectMapper();
      objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
      objectMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
      objectMapper.registerModule(new CustomGeoModule());
      objectMapper.registerModule(new JavaTimeModule());
    }

    @Override
    public String mapToString(Object object) throws IOException {
      return objectMapper.writeValueAsString(object);
    }

    @Override
    public  T mapToObject(String source, Class clazz) throws IOException {
      return objectMapper.readValue(source, clazz);
    }
  }
}