Elasticsearch 向量数据库

<dependency>
    <groupId>org.springframework.ai</groupId>
    <artifactId>spring-ai-elasticsearch-vectordb</artifactId>
    <version>${spring-ai.version}</version>
</dependency>

# Elasticsearch 向量数据库配置
spring.ai.elasticsearch.vectordb.enabled=true
spring.ai.elasticsearch.vectordb.host=localhost
spring.ai.elasticsearch.vectordb.port=9200
spring.ai.elasticsearch.vectordb.index-name=vectors

@Service
public class ElasticsearchVectorService {
    private final ElasticsearchVectorClient vectorClient;

    public ElasticsearchVectorService(ElasticsearchVectorClient vectorClient) {
        this.vectorClient = vectorClient;
    }

    public void storeVector(String id, float[] vector, Map<String, Object> metadata) {
        vectorClient.store(id, vector, metadata);
    }

    public List<SearchResult> searchSimilar(float[] queryVector, int k) {
        return vectorClient.search(queryVector, k);
    }
}

@Configuration
public class ElasticsearchVectorStorageConfig {
    @Bean
    public VectorStorage elasticsearchVectorStorage(ElasticsearchVectorProperties properties) {
        return new ElasticsearchVectorStorage(properties);
    }
}

@Configuration
public class ElasticsearchSimilaritySearchConfig {
    @Bean
    public SimilaritySearch elasticsearchSimilaritySearch(ElasticsearchVectorProperties properties) {
        return new ElasticsearchSimilaritySearch(properties);
    }
}

@Service
public class HybridSearchService {
    private final ElasticsearchVectorClient vectorClient;

    public List<SearchResult> hybridSearch(String text, float[] queryVector, int k) {
        return vectorClient.hybridSearch(text, queryVector, k);
    }
}

@Configuration
public class IndexConfig {
    @Bean
    public IndexConfig indexConfig() {
        return IndexConfig.builder()
            .name("vector-index")
            .dimension(1536)
            .metric(MetricType.COSINE)
            .build();
    }
}

@Configuration
public class MappingConfig {
    @Bean
    public MappingConfig mappingConfig() {
        return MappingConfig.builder()
            .vectorField("vector")
            .metadataFields(Arrays.asList("title", "content"))
            .build();
    }
}

management.endpoints.web.exposure.include=elasticsearch-vectordb
management.endpoint.elasticsearch-vectordb.enabled=true