SpringBoot整合ES-7.12.1

docker安装es问题：整合es问题

1、docker pull elasticsearch:7.12.1

2、启动镜像：docker run -e ES_JAVA_OPTS="-Xms256m -Xmx256m" -e "discovery.type=single-node" --name es -it -p 9200:9200 -p 9300:9300 elasticsearch:7.12.1

3、访问9200端口

1、在启动镜像的时，启动中秒退
可能是内存不够的原因，需要设置参数-e ES_JAVA_OPTS="-Xms256m -Xmx256m"

2 、discovery.seed_providerscluster.initial_master_nodes] must be configured

需要加参数：-e "discovery.type=single-node";

1、导入依赖

 
     org.springframework.boot
     spring-boot-starter-data-elasticsearch
 

2、application.properties文件

spring.elasticsearch.uris=http://121.40.135.149:9200

3、pojo类

@Data
@document(indexName = "tyq")
public class Article {
    @Id
    private String id;
    private String title;
    @Field(type = FieldType.Nested, includeInParent = true)
    private List authors;

    public Article(String title){
        this.title = title;
    }
}

@Data
public class Author {
    private String name;
    public Author(String name){this.name = name;}
}

4、Repository

@Repository
public interface ArticleRepository extends ElasticsearchRepository {

    // 根据作者m名称 搜索
    Page
 findByAuthorsName(String name, Pageable pageable);

    // 搜索title字段
    Page
 findByTitleIsContaining(String word, Pageable pageable);

    Page
 findByTitle(String title, Pageable pageable);
}

5、Test

1、版本问题：``
导致缺少文件，ES的版本应需要和Spring Data的版本要匹配，也可单独导入ES依赖匹配，Spring Data Elasticsearch

2、ES的版本和服务器版本保持一致