Springframework Data Elasticsearch无法创建类java.time.ZonedDateTime的对象

问题描述

我正在按照建议将RestHightCLient与ElasticsearchRestTemplate一起使用。我正在尝试从elasticsearch检索zoneddatetime，但似乎spring-data-elasticsearch无法创建类zoneddatetime的对象。下面的代码段有什么问题，我还需要添加其他哪些配置。

此外，如果我要直接使用RestHighLevelClient而不使用ElasticsearchOperations，那我需要做什么。

    @Bean
    @Override
    public RestHighLevelClient elasticsearchClient() {
        HttpHeaders httpHeaders = new HttpHeaders();
        httpHeaders.add("content-type","application/json");
        ClientConfiguration clientConfiguration = ClientConfiguration
                .builder()
                .connectedTo("localhost:9200")
                .build();
        return RestClients.create(clientConfiguration).rest();
    }

    @Bean(name = {"elasticsearchTemplate"})
    public ElasticsearchOperations elasticsearhTemplate() {
        return new ElasticsearchRestTemplate(elasticsearchClient());
    }

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing Failed; nested exception is org.springframework.data.elasticsearch.core.convert.ConversionException: Could not create object of class java.time.zoneddatetime] with root cause

java.time.DateTimeException: Unable to obtain LocalDate from TemporalAccessor: {YearOfEra=2020,DayOfMonth=25,OffsetSeconds=3600,MonthOfYear=8},ISO resolved to 16:46:47.891 of type java.time.format.Parsed
    at java.base/java.time.LocalDate.from(LocalDate.java:397) ~[na:na]

public class XXClass {
    ....

    @Field(type = FieldType.Date,format = DateFormat.custom,pattern = "yyyy-MM-dd'T'HH:mm:ss.SSS Z")
    private zoneddatetime created = zoneddatetime.Now();
}

解决方法

更改模式以使用 uuuu 代替 yyyy ； is documented here，Elasticsearch中的更改对此负责：https://www.elastic.co/guide/en/elasticsearch/reference/current/migrate-to-java-time.html#java-time-migration-incompatible-date-formats

顺便说一句，您不需要

httpHeaders.add("content-type","application/json");

Spring Data Elasticsearch不需要@Json...批注。