我的配置：

@Configuration
@EnableElasticsearchRepositories(
    basePackages = { "com.aj.new.repositories" })
public class ElasticDataSourceConfig {

    @Bean
    public RestHighLevelClient client() {

        ClientConfiguration clientConfiguration = ClientConfiguration.builder()
            .connectedTo("localhost:9200")
            .build();

        return RestClients.create(clientConfiguration).rest();
    }

    @Bean
    public ElasticsearchRestTemplate elasticsearchTemplate() {
        return new ElasticsearchRestTemplate(client());
    }
}

文件：

@Document(indexName = "provider_search")
public class Provider {

    @Id @Field
    private Long id;

    @Field(type = FieldType.Keyword)
    private String search;

    @Field(name = "ProviderName", type = FieldType.Keyword)
    private String providerName;

    @Field(name = "Address")
    private String address;

    @Field(name = "City")
    private String city;

    @Field(name = "State")
    private String state;

   ...getters...
   ...setters...
}

用法：

@Service
public class MySearchService {

  @Autowired
  private ElasticsearchRestTemplate elasticsearchRestTemplate;

  public List<Provider> searchProvidersUsingElastic(final String 
    providerName, final AddressSearchCriteriaBean addressCriteria) {

    final NativeSearchQueryBuilder searchQueryBuilder = new 
      NativeSearchQueryBuilder();

    if (providerName != null) {
      final String regex = ".*" + providerName + ".*";
      searchQueryBuilder.withQuery(regexpQuery("providerName", regex));
    }

    if (addressCriteria.getState() != null) {
      searchQueryBuilder.withFilter(matchQuery("state", 
        addressCriteria.getState())
       .fuzziness(Fuzziness.ONE));
    }   

    SearchHits<Provider> articles = 
      elasticsearchRestTemplate.search(searchQueryBuilder.build(), 
      Provider.class, IndexCoordinates.of("provider_search"));

    final List<Provider> providers = articles
      .stream()
      .map(SearchHit::getContent)
      .collect(Collectors.toList());

    return providers;
  }
}

在使用或不使用过滤器进行调试时，我得到的提供程序只填充了它们的id字段。“搜索”、“状态”等所有其他字段都为空。
这是我在elasticsearch世界的第一次尝试，我不确定这里出了什么问题。感谢您的帮助。