类型转换异常 当前端传的long类型数据封装成为localdatatime数据类型接收时，会报错，不能直接转换 需要定义一个配置类交给spring去管理 如图所示

package com.itheima.search.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.convert.converter.Converter;
import org.springframework.data.convert.ReadingConverter;
import org.springframework.data.convert.WritingConverter;
import org.springframework.data.elasticsearch.config.ElasticsearchConfigurationSupport;
import org.springframework.data.elasticsearch.core.convert.ElasticsearchCustomConversions;

import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

//https://blog.csdn.net/qq_33302985/article/details/109059044
//https://docs.spring.io/spring-data/elasticsearch/docs/4.2.1/reference/html/#elasticsearch.mapping.meta-model.conversions
//转换器配置
@Configuration
public class ElasticsearchConfiguration extends ElasticsearchConfigurationSupport {

    @Bean
    @Override
    @Primary
    public ElasticsearchCustomConversions elasticsearchCustomConversions() {
        List<Converter> converters = new ArrayList<>();
        converters.add(DateToLocalDateTimeConverter.INSTANCE);
        converters.add(StringToLocalDateTimeConverter.INSTANCE);
        converters.add(LongToLocalDateTimeConverter.INSTANCE);
        return new ElasticsearchCustomConversions(converters);
    }

    //long类型转成时间类型
    @ReadingConverter
    enum LongToLocalDateTimeConverter implements Converter<Long, LocalDateTime> {

        INSTANCE;

        @Override
        public LocalDateTime convert(Long source) {
            return Instant.ofEpochMilli(source).atZone(ZoneId.systemDefault()).toLocalDateTime();
        }

    }

    //strig类型转成时间类型
    @ReadingConverter
    enum StringToLocalDateTimeConverter implements Converter<String, LocalDateTime> {

        INSTANCE;

        @Override
        public LocalDateTime convert(String source) {
            DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
            return LocalDateTime.parse(source, df);
        }

    }

    //写将日期类型转换成时间类型
    @WritingConverter
    enum DateToLocalDateTimeConverter implements Converter<Date, LocalDateTime> {

        INSTANCE;

        @Override
        public LocalDateTime convert(Date date) {
            Instant instant = date.toInstant();
            return instant.atZone(ZoneId.systemDefault()).toLocalDateTime();
        }
    }
}