Spring boot集成Elasticsearch填坑之日期类型

Spring boot集成Elasticsearch填坑之日期类型

• • 环境
  • 问题
  • 解决方案

环境

Java: 1.8
Spring Boot: 2.3.2.RELEASE
Elasticsearch: 7.9.2

问题

当实体类设置日期类型为Date时，保存数据没有问题，但查询时报错:

java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {},ISO resolved to 2007-08-09 of type java.time.format.Parsedat java.time.Instant.from(Instant.java:378)at org.springframework.data.elasticsearch.core.convert.ElasticsearchDateConverter.parse(ElasticsearchDateConverter.java:125)at org.springframework.data.elasticsearch.core.mapping.SimpleElasticsearchPersistentProperty$1.read(SimpleElasticsearchPersistentProperty.java:160)at org.springframework.data.elasticsearch.core.convert.MappingElasticsearchConverter.readValue(MappingElasticsearchConverter.java:281)at org.springframework.data.elasticsearch.core.convert.MappingElasticsearchConverter$ElasticsearchPropertyValueProvider.getPropertyValue(MappingElasticsearchConverter.java:869)at org.springframework.data.elasticsearch.core.convert.MappingElasticsearchConverter.readProperties(MappingElasticsearchConverter.java:260)at org.springframework.data.elasticsearch.core.convert.MappingElasticsearchConverter.readEntity(MappingElasticsearchConverter.java:192)at org.springframework.data.elasticsearch.core.convert.MappingElasticsearchConverter.read(MappingElasticsearchConverter.java:172)at org.springframework.data.elasticsearch.core.convert.MappingElasticsearchConverter.read(MappingElasticsearchConverter.java:81)at org.springframework.data.elasticsearch.core.AbstractElasticsearchTemplate$ReadDocumentCallback.doWith(AbstractElasticsearchTemplate.java:602)at org.springframework.data.elasticsearch.core.ElasticsearchRestTemplate.get(ElasticsearchRestTemplate.java:166)

解决方案

使用java.time包下的日期类型替代Date

• 当字段设置为@Field(type = FieldType.Date, format = DateFormat.year_month_day)时，类型要为LocalDate；
• 但字段设置为@Field(type = FieldType.Date, format = DateFormat.date_hour_minute_second_millis)时，类型要为LocalDateTime；
• 其他待发现

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