spring boot 集成es 7.0的配置

在Spring Boot中，集成Elasticsearch 7.x版本的步骤如下：

1. 添加Elasticsearch的依赖

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>7.0.0</version>
</dependency>

2. 在application.properties文件中配置Elasticsearch的连接信息

spring.data.elasticsearch.cluster-nodes=localhost:9200

3. 创建Elasticsearch的配置类

@Configuration
public class ElasticsearchConfig {

    @Value("${spring.data.elasticsearch.cluster-nodes}")
    private String clusterNodes;

    @Bean
    public RestHighLevelClient restHighLevelClient() {
        RestClientBuilder builder = RestClient.builder(
                new HttpHost("localhost", 9200, "http"));
        RestHighLevelClient client = new RestHighLevelClient(builder);
        return client;
    }

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

在该配置类中，我们使用`RestHighLevelClient`来和Elasticsearch进行交互，并配置了`ElasticsearchRestTemplate`来方便我们进行数据的操作。

4. 在代码中使用Elasticsearch

@Autowired
private ElasticsearchOperations elasticsearchOperations;

...

// 创建索引
IndexOperations indexOps = elasticsearchOperations.indexOps(IndexCoordinates.of("indexName"));
indexOps.create();

// 存储文档
IndexQuery indexQuery = new IndexQueryBuilder()
    .withObject(document)
    .build();
elasticsearchOperations.index(indexQuery, IndexCoordinates.of("indexName"));

// 查询文档
SearchHits<Document> searchHits = elasticsearchOperations.search(
    new NativeSearchQueryBuilder()
        .withQuery(QueryBuilders.matchQuery("title", "spring boot"))
        .build(),
    Document.class,
    IndexCoordinates.of("indexName"));
List<Document> documents = searchHits.stream()
    .map(SearchHit::getContent)
    .collect(Collectors.toList());

以上代码演示了如何在Spring Boot中使用Elasticsearch进行索引的创建、文档的存储和查询。如果需要更多的操作，可以参考官方文档：https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-high.html