springboot整合High Level Client elasticsearch详细步骤

好的，下面我来为你讲解如何在Spring Boot中整合Elasticsearch的High Level Client，具体步骤如下：

1. 添加Elasticsearch依赖

在`pom.xml`文件中添加以下依赖：

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>7.15.1</version>
</dependency>

2. 配置Elasticsearch

在`application.properties`文件中添加以下配置：

spring.elasticsearch.rest.uris=http://localhost:9200 # Elasticsearch的地址和端口

3. 创建Elasticsearch配置类

创建一个配置类，用于配置Elasticsearch的High Level Client。例如：

@Configuration
public class ElasticsearchConfig {
    @Value("${spring.elasticsearch.rest.uris}")
    private String esUris;

    @Bean
    public RestHighLevelClient restHighLevelClient() {
        String[] esUriArray = esUris.split(",");
        HttpHost[] httpHosts = new HttpHost[esUriArray.length];
        for (int i = 0; i < esUriArray.length; i++) {
            httpHosts[i] = HttpHost.create(esUriArray[i]);
        }
        RestClientBuilder builder = RestClient.builder(httpHosts);
        return new RestHighLevelClient(builder);
    }
}

其中，`@Value`注解用于获取`application.properties`文件中的配置，`RestHighLevelClient`为Elasticsearch的High Level Client。

4. 使用Elasticsearch

在代码中使用Elasticsearch时，只需要注入`RestHighLevelClient`，即可进行CRUD操作。例如：

@Autowired
private RestHighLevelClient restHighLevelClient;

public void save(String index, String id, String json) throws IOException {
    IndexRequest request = new IndexRequest(index).id(id).source(json, XContentType.JSON);
    restHighLevelClient.index(request, RequestOptions.DEFAULT);
}

public String findById(String index, String id) throws IOException {
    GetRequest request = new GetRequest(index).id(id);
    GetResponse response = restHighLevelClient.get(request, RequestOptions.DEFAULT);
    return response.getSourceAsString();
}

public void update(String index, String id, String json) throws IOException {
    UpdateRequest request = new UpdateRequest(index, id).doc(json, XContentType.JSON);
    restHighLevelClient.update(request, RequestOptions.DEFAULT);
}

public void delete(String index, String id) throws IOException {
    DeleteRequest request = new DeleteRequest(index, id);
    restHighLevelClient.delete(request, RequestOptions.DEFAULT);
}

以上就是在Spring Boot中整合Elasticsearch的High Level Client的详细步骤，希望能对你有所帮助！