springboot整合es

1.引入依赖（springboot2.3.x版本可以兼容elasticsearch7.x版本。）

      <parent><artifactId>spring-boot-starter-parent</artifactId><groupId>org.springframework.boot</groupId><version>2.3.6.RELEASE</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-elasticsearch</artifactId></dependency></dependencies>

2.修改配置文件

spring:elasticsearch:rest:uris: http://localhost:9200

3.编写实体类document

@Data
@Document(indexName = "goods") //indexName 为索引库名称
public class Goods implements Serializable {@Field(type = FieldType.Keyword) //必须指定关键字private String id;@Field(type = FieldType.Text)private String goodsName;@Field(type = FieldType.Integer)private Integer store;@Field(type = FieldType.Double)private double price;}

4.编写dao数据访问

@Repository 
public interface GoodsDao extends ElasticsearchRepository<Goods, String> {
}

解释：ElasticsearchRepository<Goods, String>中的第一个泛型参数为索引库对应的实体类，第二个泛型为索引库关键字的类型

5.测试

	@Autowiredprivate GoodsDao goodsDao;/*** 添加文档* */@Testpublic void saveTest(){Goods goods = new Goods();goods.setId("1");goods.setGoodsName("华为手机");goods.setStore(100);goods.setPrice(5000);goodsDao.save(goods);System.out.println("添加成功...");}/*** 根据ID查询文档* */@Testpublic void findById(){Goods goods = goodsDao.findById("1").get();System.out.println(goods);}