# New Java API Client throws JsonpMappingException **URL:** \ **Category:** Elasticsearch\ **Tags:** language-clients\ **Created:** [May 28, 2024, 7:12am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345 "2024-05-28T07:12:11Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![PodarcisMuralis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podarcismuralis/32/122606_2.png) [@PodarcisMuralis](https://discuss.elastic.co/u/PodarcisMuralis)\ **Post date:** [May 28, 2024, 7:12am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/1 "2024-05-28T07:12:11Z")
Hi, I am currently migrating from High Rest API Client to Java APi Client and I got an error which I can not solve. This is my code: ```auto @Override public Optional findById(String id, List customerIds) throws IOException { var searchRequest = RequestsFactory.createDocumentByIdSearchRequest(indexName, id, customerIds); var searchResponse = elasticsearchJavaApiClient.search(searchRequest, MyClass.class); return documentTransformer.extractSingleDocumentFromSearchResponse(searchResponse); } ``` If I use ObjectNode.class instead of MyClass.class I get no error. Previously I had no such error. The error occurs inside elasticsearchJavaApiClient.search() ```auto co.elastic.clients.transport.TransportException: node: https://myDomain:9200/, status: 200, [es/search] Failed to decode response ... Caused by: co.elastic.clients.json.JsonpMappingException: Error deserializing co.elastic.clients.elasticsearch.core.search.Hit: jakarta.json.JsonException: Jackson exception (JSON path: hits.hits[0]._source) (line no=1, column no=336, offset=-1) at co.elastic.clients.json.JsonpMappingException.from0(JsonpMappingException.java:134) at co.elastic.clients.json.JsonpMappingException.from(JsonpMappingException.java:121) at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:218) at co.elastic.clients.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:148) ... Caused by: jakarta.json.JsonException: Jackson exception at co.elastic.clients.json.jackson.JacksonUtils.convertException(JacksonUtils.java:39) at co.elastic.clients.json.jackson.JacksonJsonpMapper$JacksonValueParser.deserialize(JacksonJsonpMapper.java:142) ... Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Java 8 date/time type `java.time.OffsetDateTime` not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-jsr310" to enable handling at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 335] (through reference chain: com.example.dto.MyModel["MyField"]) ``` ---
**Author:** ![Quentin\_Pradet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/quentin_pradet/32/94192_2.png) [@Quentin\_Pradet](https://discuss.elastic.co/u/Quentin_Pradet)\ **Post date:** [May 28, 2024, 7:20am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/2 "2024-05-28T07:20:50Z")
Hello! The crux of the issue seems to that `MyField` has a timezone offset and you don't have enough dependencies to make it work: > [@PodarcisMuralis](#): > > `Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Java 8 date/time type `java.time.OffsetDateTime` not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-jsr310" to enable handling` Did you install Jackson as mentioned here? It should come with the jsr310 library too. > **[Installation | Elasticsearch Java API Client \[8.13\] | Elastic](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/installation.html)** ---
**Author:** ![PodarcisMuralis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podarcismuralis/32/122606_2.png) [@PodarcisMuralis](https://discuss.elastic.co/u/PodarcisMuralis)\ **Post date:** [May 28, 2024, 7:25am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/3 "2024-05-28T07:25:54Z")
Yes, here is my gradle: ```auto // Elasticsearch Java API Client implementation "co.elastic.clients:elasticsearch-java:${elasticsearchJavaApiClientVersion}" implementation "com.fasterxml.jackson.core:jackson-databind:${jacksonDatabindCoreVersion}" ``` gradle.properties: ```auto elasticsearchJavaApiClientVersion=8.13.2 jacksonDatabindCoreVersion=2.17.0 ``` I have Elasticsearch 8.5.3. Should I also change the version to 8.13.2? ---
**Author:** ![ltrotta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ltrotta/32/124003_2.png) [@ltrotta](https://discuss.elastic.co/u/ltrotta)\ **Post date:** [May 28, 2024, 8:56am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/5 "2024-05-28T08:56:16Z")
Hello! Jackson does not handle Java Time classes by default, you have to add the Time module to the mapper like so: ```auto ObjectMapper mapper = JsonMapper.builder() .addModule(new JavaTimeModule()) .build(); ``` and then use it to build the transport and subsequently the client. ---
**Author:** ![PodarcisMuralis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podarcismuralis/32/122606_2.png) [@PodarcisMuralis](https://discuss.elastic.co/u/PodarcisMuralis)\ **Post date:** [May 28, 2024, 9:26am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/6 "2024-05-28T09:26:05Z")
Thank you very much for the suggestion. My mapper class was like: ```auto @NoArgsConstructor(access = AccessLevel.PRIVATE) public class ObjectMapperUtil { private static final String DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"; public static ObjectMapper createMapper() { return new ObjectMapper() .setDateFormat(new SimpleDateFormat(DATE_FORMAT)) .enable(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE) .registerModule(new JavaTimeModule()); } } ``` I changed it into this: ```auto @NoArgsConstructor(access = AccessLevel.PRIVATE) public class ObjectMapperUtil { private static final String DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"; public static ObjectMapper createMapper() { return JsonMapper.builder() .addModule(new JavaTimeModule()) .defaultDateFormat(new SimpleDateFormat(DATE_FORMAT)) .enable(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE) .build(); } } ``` Still did not work. I have 2 OffsetDateTime typed fields in MyClass ---
**Author:** ![ltrotta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ltrotta/32/124003_2.png) [@ltrotta](https://discuss.elastic.co/u/ltrotta)\ **Post date:** [May 28, 2024, 9:50am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/7 "2024-05-28T09:50:21Z")
Is the jackson error still the same? We have an [example project](https://github.com/elastic/elasticsearch-java/blob/main/examples/realworld-app/README.md) in the java client repo where the client is set up to serialize Time classes, you can try comparing your code with ours to see what could be missing ([here](https://github.com/elastic/elasticsearch-java/blob/9b719ae0c9d201b4d1ef70cb8ef8373a359d3627/examples/realworld-app/rw-database/src/main/java/realworld/db/ElasticClient.java#L57) is where the client is built). ---
**Author:** ![PodarcisMuralis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podarcismuralis/32/122606_2.png) [@PodarcisMuralis](https://discuss.elastic.co/u/PodarcisMuralis)\ **Post date:** [May 28, 2024, 9:52am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/8 "2024-05-28T09:52:22Z")
Yes it is the same error. I tried various combinations but did not work. Thank you for your suggestion. I really appreciate it. I am going to compare it definitely. ---
**Author:** ![PodarcisMuralis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podarcismuralis/32/122606_2.png) [@PodarcisMuralis](https://discuss.elastic.co/u/PodarcisMuralis)\ **Post date:** [May 29, 2024, 5:56pm UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/9 "2024-05-29T17:56:32Z")
@ltrotta trotta Yes your answer was correct! I had written the mapper in the wrong place. Now I fixed it. So my final config: ```auto String[] elasticsearchHosts = elasticsearchEndpoints.split(","); HttpHost[] httpHosts = Arrays.stream(elasticsearchHosts) .map(HttpHost::create).toArray(HttpHost[]::new); // Create the low level client final RestClientBuilder restClientbuilder = RestClient.builder(httpHosts); // Set elasticsearch user credentials final CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password)); restClientbuilder.setHttpClientConfigCallback( b -> b.setDefaultCredentialsProvider(credentialsProvider)); RestClient restClient = restClientbuilder.build(); ObjectMapper mapper = JsonMapper.builder() .addModule(new JavaTimeModule()) .build(); // Create the transport with a Jackson mapper which maps classes to json ElasticsearchTransport transport = new RestClientTransport(restClient, new JacksonJsonpMapper(mapper)); return new ElasticsearchClient(transport); ``` But additionally I had to add lombok annotations to **MyClass.class** ```auto @Getter @ToString @NoArgsConstructor ``` The reason was that I had two OffsetDateTime fields and could not be parsed. But it works now. Thank you very much for the help. Sincerely, Murat ---
**Author:** ![ltrotta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ltrotta/32/124003_2.png) [@ltrotta](https://discuss.elastic.co/u/ltrotta)\ **Post date:** [May 30, 2024, 7:49am UTC](https://discuss.elastic.co/t/new-java-api-client-throws-jsonpmappingexception/360345/10 "2024-05-30T07:49:08Z")
Glad we could help 😁