java 连接 Elasticsearch 使用 RestHighLevelClient 进行模糊查询

依赖

<!-- elasticsearch-rest-client -->
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-client</artifactId>
    <version>7.13.3</version>
</dependency>
<!-- elasticsearch-rest-high-level-client -->
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>7.13.3</version>
</dependency>

配置

@Configuration
public class ESConfig {

    @Bean
    public RestHighLevelClient getRestHighLevelClient(){
        HttpHost http1 = new HttpHost("127.0.0.1", 9200, "http");
        HttpHost http2 = new HttpHost("127.0.0.1", 9201, "http");
        RestClientBuilder restClientBuilder = RestClient.builder(http1, http2);
        RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);
        return restHighLevelClient;
    }

}

@Autowired
private RestHighLevelClient restHighLevelClient;

模糊查询

public void fuzzy() throws IOException {
	SearchRequest searchRequest = new SearchRequest("myindex");

    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    searchSourceBuilder.query(QueryBuilders
            .fuzzyQuery("name", "bbc")
            .fuzziness(Fuzziness.AUTO));
	searchRequest.source(searchSourceBuilder);

    SearchResponse response = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
    SearchHit[] hits = response.getHits().getHits();
    Stream.of(hits).forEach(System.out::println);
}