SpringBoot整合elasticsearch

好的，下面是SpringBoot整合elasticsearch的步骤：

1. 引入elasticsearch和spring-boot-starter-data-elasticsearch的依赖：

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>7.12.1</version>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
    <version>2.4.5</version>
</dependency>

2. 配置elasticsearch连接信息：

spring.data.elasticsearch.cluster-nodes=localhost:9200

3. 创建实体类：

@Document(indexName = "my_index")
public class MyEntity {
    @Id
    private String id;
    private String name;
    // getter and setter
}

4. 创建es的Repository：

public interface MyRepository extends ElasticsearchRepository<MyEntity, String> {
}

5. 在service中使用Repository：

@Service
public class MyService {
    @Autowired
    private MyRepository myRepository;

    public void save(MyEntity entity) {
        myRepository.save(entity);
    }

    public List<MyEntity> search(String name) {
        return myRepository.findByName(name);
    }
}

6. 在controller中调用service：

@RestController
public class MyController {
    @Autowired
    private MyService myService;

    @PostMapping("/save")
    public void save(@RequestBody MyEntity entity) {
        myService.save(entity);
    }

    @GetMapping("/search")
    public List<MyEntity> search(@RequestParam String name) {
        return myService.search(name);
    }
}

这样就可以通过SpringBoot整合elasticsearch实现数据的增删改查了。