springboot 整合es查询
时间: 2023-09-06 20:14:51 浏览: 54
在Spring Boot中整合Elasticsearch进行查询的方法有多种,其中包括TransportClient、RestClient、Spring Data Elasticsearch和Elasticsearch SQL。官方推荐使用RestClient进行整合。要使用RestClient进行整合,你需要引入相应的依赖并配置相应的bean。首先,在你的项目中添加以下依赖:
```
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
```
接下来,在你的配置类中添加以下bean定义,以创建RestHighLevelClient实例:
```java
@Bean
public RestHighLevelClient restHighLevelClient() {
return new RestHighLevelClient(
RestClient.builder(new HttpHost("localhost", 9200, "http")));
}
```
这样,你就可以使用RestHighLevelClient来进行Elasticsearch的查询操作了。例如,你可以使用模糊匹配索引名称的方法来查询索引:
```java
GetIndexRequest getIndexRequest = new GetIndexRequest("log*");
GetIndexResponse getIndexResponse = restHighLevelClient.indices().get(getIndexRequest, RequestOptions.DEFAULT);
List<String> elasticsearchList = new ArrayList<>(getIndexResponse.getMappings().keySet());
elasticsearchList.forEach(System.out::println);
```
你还可以使用Java API来进行查询,例如使用existsQuery方法查询networkLogDetailInfo字段不为null的数据:
```java
searchSourceBuilder.query(QueryBuilders.existsQuery("networkLogDetailInfo"));
```
综上所述,以上是在Spring Boot中整合Elasticsearch进行查询的方法。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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