springboot整合elasticsearch

springboot版本2.7.3
elasticsearch版本7.17.4

版本兼容

https://docs.spring.io/spring-data/elasticsearch/docs/current/reference/html/#preface.requirements

搭建过程中踩到的坑有一个就是版本不兼容

环境搭建

使用docker搭建

docker pull elasticsearch:7.17.4 

docker run -itd --name es7 \
-p 9200:9200 -p 9300:9300 \
-e "discovery.type=single-node" \
-e ES_JAVA_OPTS="-Xms64m -Xmx256m" \
elasticsearch:7.17.4

依赖

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
        </dependency>

application.yaml

spring:
  elasticsearch:
    uris:
      - 127.0.0.1:9200

model

@Data
@Document(indexName = "book1")
public class Book {

    @Id
    private Integer id;
    // @Field(type = FieldType.Text)
    private String bookName;
    // @Field(type = FieldType.Keyword)
    private String authorName;

    @Field(type = FieldType.Date, format = DateFormat.date_hour_minute_second)
    private LocalDateTime recordTime;
}

repository

public interface BookRepository extends ElasticsearchRepository<Book, Integer> {
}

test

@SpringBootTest
class ElasticsearchApplicationTests {

    @Autowired
    BookRepository bookRepository;

	//springboot自动配置ElasticsearchRestTemplate
    @Autowired
    ElasticsearchRestTemplate elasticsearchRestTemplate;

    @Test
    void saveTest() {
        Book book = new Book();
        book.setId(3);
        book.setAuthorName("tcoding");
        book.setBookName("hello spring boot");
        book.setRecordTime(LocalDateTime.now());
        bookRepository.save(book);
    }

    @Test
    void getTest(){
        Optional<Book> byId = bookRepository.findById(3);
        byId.ifPresent(System.out::println);
    }

    @Test
    void templateTet() {
        System.out.println(elasticsearchRestTemplate.get("3", Book.class));
    }
}

源码

https://github.com/googalAmbition/hello-spring-boot/tree/main/22-elasticsearch