在 @Entity 中使用 @Document 表示法

Question

我有用@Entity符号标记为 jpa 的实体，例如

@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table(name = "category", schema = "\"public\"")
public class Category extends AbstractBaseEntity {
...

但我也想使用弹性搜索存储库，为此我需要使用@Document表示法，但是，如果我同时使用两者，则会出现异常：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryElasticSearchRepository' defined in br.com.gwcloud.smartplace.catalog.elasticsearch.repositories.CategoryElasticSearchRepository defined in @EnableElasticsearchRepositories declared on ElasticSearchConfig: Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.elasticsearch.repository.support.SimpleElasticsearchRepository]: Constructor threw exception; nested exception is org.springframework.data.elasticsearch.UncategorizedElasticsearchException: java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused: no further information; nested exception is ElasticsearchException[java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused: no further information]; nested: ExecutionException[java.net.ConnectException: Connection refused: no further information]; nested: ConnectException[Connection refused: no further information];

我的配置文件如下：

@Configuration
@EnableElasticsearchRepositories("br.com.gwcloud.smartplace.catalog.elasticsearch.repositories")
    public class ElasticSearchConfig {    
        @Bean
        public RestHighLevelClient client() {
            ClientConfiguration clientConfiguration 
                = ClientConfiguration.builder()
                    .connectedTo("localhost:9200")
                    .build();
    
            return RestClients.create(clientConfiguration).rest();
        }    
        @Bean
        public ElasticsearchOperations elasticsearchTemplate() {
            return new ElasticsearchRestTemplate(client());
        }    
    }

Answer 1

查看错误消息很明显问题是什么：

java.net.ConnectException：连接被拒绝

当您将@Document放在您的实体上时，Spring 数据 Elasticsearch 会尝试初始化存储库并尝试连接到 Elasticsearch 集群。

您的配置错误或不存在，在后一种情况下 Spring 数据 Elasticsearch 尝试连接到在localhost:9200运行的本地实例。