ElasticSearch Spring-Data Date format always is long

Question

When using spring-data to insert Elasticsearch document with Date type, I can\'t get right date format, the date format always is Long.

here is the java code: Entity.jav

Answer 1

Starting from Elasticsearch 7 you should't use yyyy but uuuu. e.g:

@Field(type = FieldType.Date, format = DateFormat.custom, pattern = "uuuu-MM-dd'T'HH:mm:ss.SSSZZ")
private Date lastModifiedDate;

You don't need @JsonProperty because now Spring Data Elasticsearch doesn't use Jackson but instead a MappingElasticsearchConverter. With this annotation, a converter is automatically created for this property and used.