使用spring-data-elasticsearch和搜索相似的文档,可以通过以下步骤获得相似度得分:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-elasticsearch</artifactId>
</dependency>
@Configuration
@EnableElasticsearchRepositories(basePackages = "com.example.repository")
public class ElasticsearchConfig {
@Bean
public RestHighLevelClient elasticsearchClient() {
RestClientBuilder builder = RestClient.builder(new HttpHost("localhost", 9200, "http"));
return new RestHighLevelClient(builder);
}
@Bean
public ElasticsearchRestTemplate elasticsearchTemplate() {
return new ElasticsearchRestTemplate(elasticsearchClient());
}
}
@Document(indexName = "my_index", type = "my_type")
public class MyDocument {
@Id
private String id;
@Field(type = FieldType.Text)
private String text;
// 其他字段...
// getters and setters
}
public interface MyDocumentRepository extends ElasticsearchRepository<MyDocument, String> {
List<MyDocument> findByText(String text);
}
@Autowired
private MyDocumentRepository repository;
// ...
String searchText = "要搜索的文本";
List<MyDocument> documents = repository.findByText(searchText);
for (MyDocument document : documents) {
Explanation explanation = elasticsearchTemplate().getClient().explain(
new ExplainRequest("my_index", "my_type", document.getId()).query(
QueryBuilders.matchQuery("text", searchText)
)
).getExplanation();
float score = explanation.getValue(); // 获取相似度得分
System.out.println("相似度得分:" + score);
}
通过上述步骤,可以使用spring-data-elasticsearch进行搜索相似的文档,并获得相似度得分。在这个例子中,我们使用了Elasticsearch作为搜索引擎,并通过spring-data-elasticsearch简化了与Elasticsearch的交互。如果你想了解更多关于spring-data-elasticsearch的信息,可以访问腾讯云的Elasticsearch服务页面:腾讯云Elasticsearch。
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