一、准备
1.添加依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> </dependency>
2.application.yml
spring: application: name: search-service data: elasticsearch: cluster-name: elasticsearch cluster-nodes: 192.168.25.129:9300
3.实体类
@Data @Document(indexName = "goods", type = "_doc", shards = 1, replicas = 0) public class Goods { @Idprivate Long id; @Field(type = FieldType.text, analyzer = "ik_max_word") private String all; @Field(type = FieldType.keyword, index = false) private String subTitle;private Long brandId;private Long cid1;private Long cid2;private Long cid3;private Date createTime;private List<Long> price; @Field(type = FieldType.keyword, index = false) private String skus;private Map<String, Object> specs; }
@Document
作用在类,标记实体类为文档对象,一般有两个属性- indexName:对应索引库名称
- type:对应在索引库中的类型
- shards:分片数量,默认5
- replicas:副本数量,默认1
@Id
作用在成员变量,标记一个字段作为id主键@Field
作用在成员变量,标记为文档的字段,并指定字段映射属性:- type:字段类型,取值是枚举:FieldType
- index:是否索引,布尔类型,默认是true
- store:是否存储,布尔类型,默认是false
- analyzer:分词器名称
二.、索引操作
首先注入ElasticsearchTemplate
@Resource private ElasticsearchTemplate elasticsearchTemplate;
● 创建索引
elasticsearchTemplate.createIndex(Goods.class);
● 配置映射
elasticsearchTemplate.putMapping(Goods.class);
● 删除索引
//根据类 elasticsearchTemplate.deleteIndex(Goods.class); //根据索引名 elasticsearchTemplate.deleteIndex("goods");
三、文档操作
1.定义接口。也是SpringData风格
public interface ItemRepository extends ElasticsearchRepository<Item,Long> { }
2.注入
@Autowired private ItemRepository itemRepository;
● 新增文档
Item item = new Item(1L, "小米手机7", " 手机", "小米", 3499.00, "http://image.leyou.com/13123.jpg"); itemRepository.save(item);
● 批量新增
List<Item> list = new ArrayList<>(); list.add(new Item(2L, "坚果手机R1", " 手机", "锤子", 3699.00, "http://image.leyou.com/123.jpg")); list.add(new Item(3L, "华为META10", " 手机", "华为", 4499.00, "http://image.leyou.com/3.jpg")); // 接收对象集合,实现批量新增 itemRepository.saveAll(list);
● 基本查询
// 查询全部,并安装价格降序排序 Iterable<Item> items = this.itemRepository.findAll(Sort.by(Sort.Direction.DESC, "price")); items.forEach(item-> System.out.println(item));
● 自定义查询
public interface ItemRepository extends ElasticsearchRepository<Item,Long> { /** * 根据价格区间查询 * @param price1 * @param price2 * @return */ List<Item> findByPriceBetween(double price1, double price2); }
自定义方法对应的原生查询语句:
Keyword | Sample | Elasticsearch Query String |
---|---|---|
And |
findByNameAndPrice |
{"bool" : {"must" : [ {"field" : {"name" : "?"}}, {"field" : {"price" : "?"}} ]}} |
Or |
findByNameOrPrice |
{"bool" : {"should" : [ {"field" : {"name" : "?"}}, {"field" : {"price" : "?"}} ]}} |
Is |
findByName |
{"bool" : {"must" : {"field" : {"name" : "?"}}}} |
Not |
findByNameNot |
{"bool" : {"must_not" : {"field" : {"name" : "?"}}}} |
Between |
findByPriceBetween |
{"bool" : {"must" : {"range" : {"price" : {"from" : ?,"to" : ?,"include_lower" : true,"include_upper" : true}}}}} |
LessThanEqual |
findByPriceLessThan |
{"bool" : {"must" : {"range" : {"price" : {"from" : null,"to" : ?,"include_lower" : true,"include_upper" : true}}}}} |
GreaterThanEqual |
findByPriceGreaterThan |
{"bool" : {"must" : {"range" : {"price" : {"from" : ?,"to" : null,"include_lower" : true,"include_upper" : true}}}}} |
Before |
findByPriceBefore |
{"bool" : {"must" : {"range" : {"price" : {"from" : null,"to" : ?,"include_lower" : true,"include_upper" : true}}}}} |
After |
findByPriceAfter |
{"bool" : {"must" : {"range" : {"price" : {"from" : ?,"to" : null,"include_lower" : true,"include_upper" : true}}}}} |
Like |
findByNameLike |
{"bool" : {"must" : {"field" : {"name" : {"query" : "?*","analyze_wildcard" : true}}}}} |
StartingWith |
findByNameStartingWith |
{"bool" : {"must" : {"field" : {"name" : {"query" : "?*","analyze_wildcard" : true}}}}} |
EndingWith |
findByNameEndingWith |
{"bool" : {"must" : {"field" : {"name" : {"query" : "*?","analyze_wildcard" : true}}}}} |
Contains/Containing |
findByNameContaining |
{"bool" : {"must" : {"field" : {"name" : {"query" : "**?**","analyze_wildcard" : true}}}}} |
In |
findByNameIn(Collection<String>names) |
{"bool" : {"must" : {"bool" : {"should" : [ {"field" : {"name" : "?"}}, {"field" : {"name" : "?"}} ]}}}} |
NotIn |
findByNameNotIn(Collection<String>names) |
{"bool" : {"must_not" : {"bool" : {"should" : {"field" : {"name" : "?"}}}}}} |
Near |
findByStoreNear |
Not Supported Yet ! |
True |
findByAvailableTrue |
{"bool" : {"must" : {"field" : {"available" : true}}}} |
False |
findByAvailableFalse |
{"bool" : {"must" : {"field" : {"available" : false}}}} |
OrderBy |
findByAvailableTrueOrderByNameDesc |
{"sort" : [{ "name" : {"order" : "desc"} }],"bool" : {"must" : {"field" : {"available" : true}}}} |
原文地址:https://www.cnblogs.com/naixin007/p/12231993.html
时间: 2024-10-08 23:16:50