Spring Data Elasticsearch中如何使用LocalDateTime

百度搜索出来的结果基本上都是如下

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

        @Override
        public Map<String, Object> mapObject(Object o) {
            return null;
        }

        @Override
        public <T> T readObject(Map<String, Object> map, Class<T> aClass) {
            return null;
        }
    }

这边有个简单的方法
增加 @JsonSerialize 和 @JsonDeserialize 注解

import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import org.springframework.data.elasticsearch.annotations.Field;

public class Data {

    @Field(type = FieldType.Date, format = DateFormat.custom, pattern = "yyyy-MM-dd HH:mm:ss || yyyy-MM-dd")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    @JsonSerialize(using = LocalDateTimeSerializer.class)
    @JsonDeserialize(using = LocalDateTimeDeserializer.class)
    private LocalDateTime createdDateTime;
}