SpringBoot整合ElasticSearch

1、创建工程、前期准备

目录结构

2、导入依赖

导入elasticsearch
提前导入fastjson、lombok

3、创建并编写配置类

4、创建并编写实体类

@Data

@NoArgsConstructor

@AllArgsConstructor

public class User implements Serializable {

private static final long serialVersionUID = -3843548915035470817L;

private String name;

private Integer age;
}

5、测试

所有测试均在 SpringbootElasticsearchApplicationTests中编写
注入 RestHighLevelClient
@Autowiredpublic RestHighLevelClient restHighLevelClient;
索引的操作
1、索引的创建

// 测试索引的创建， 
Request PUT liuyou_index
@Test
public void testCreateIndex() throws IOException {   
    CreateIndexRequest request = new CreateIndexRequest("liuyou_index");    
    CreateIndexResponse response = restHighLevelClient.indices().create(request, RequestOptions.DEFAULT);
    System.out.println(response.isAcknowledged());
    // 查看是否创建成功    
    System.out.println(response);
    // 查看返回对象    
    restHighLevelClient.close();
}

2、索引的获取，并判断其是否存在

// 测试获取索引，并判断其是否存在
@Test
public void testIndexIsExists() throws IOException {    
    GetIndexRequest request = new GetIndexRequest("index");    
    boolean exists = restHighLevelClient.indices().exists(request, RequestOptions.DEFAULT);    System.out.println(exists);
    // 索引是否存在    
    restHighLevelClient.close();
}

3、索引的删除

// 测试索引删除
@Test
public void testDeleteIndex() throws IOException {    
    DeleteIndexRequest request = new DeleteIndexRequest("liuyou_index");    
    AcknowledgedResponse response = restHighLevelClient.indices().delete(request, RequestOptions.DEFAULT);    
    System.out.println(response.isAcknowledged());// 是否删除成功    
    restHighLevelClient.close();
}