创建工程和配置
实现三类api.
- 根据名字检索
- 根据分类检索
- 根据价格区间
创建spring boot工程，添加elasticsearch依赖
配置Elasticsearch
@Configuration
@EnableElasticsearchRepositories(basePackages = "github.io.truongbn.elasticsearch.repository")
public class ClientConfig extends ElasticsearchConfiguration {@Overridepublic ClientConfiguration clientConfiguration() {return ClientConfiguration.builder().connectedTo("192.168.163.13:9200").withBasicAuth("elastic","123456").build();}
}
更多配置参考地址
Object Mapping 对象映射
Spring Data Elasticsearch 可以将对象映射为JSON，存储在ES中，也可以将其转化为对象。
@Data
@Document(indexName = "itemindex")
public class Item {@Idprivate int id;@Field(type = FieldType.Text, name = "name")private String name;@Field(type = FieldType.Double, name = "price")private Double price;@Field(type = FieldType.Keyword, name = "brand")private String brand;@Field(type = FieldType.Keyword, name = "category")private String category;
}
- @Document: 将类对象存储在索引名为itemindex的索引中
- @Id: 确保doc在index中唯一.
- @Field: 定义或者映射doc中的字段
更多关于对象映射参考: Elasticsearch Object Mapping
Elasticsearch Repositories
集成ElasticsearchRepository类，继承save(), saveAll(),findAll()等方法。ElasticsearchRepository是根据方法名产生查询。
public interface ItemRepository extends ElasticsearchRepository<Item, Integer> {
}
下面是额外实现的方法
public interface ItemRepositoryextends ElasticsearchRepository<Item, Integer> {List<Item> findByName(String name);List<Item> findByCategory(String category);List<Item> findByPriceBetween(Double low, Double high);
}
根据方法产生查询JSON,findByPriceBetween方法产生查询JSON如下所示
{"query": {"bool": {"must": [{ "range": { "price": {<
)
