关于用scala 写Elasticsearch +springboot+jpa

最新推荐文章于 2025-05-14 11:28:46 发布

屹邺林梵

最新推荐文章于 2025-05-14 11:28:46 发布

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分类专栏： elasticsearch springboot scala jpa 文章标签： scala+springboot

本文链接：https://blog.youkuaiyun.com/yiyelinfan2012/article/details/89542961

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本文分享了在项目中使用Scala结合SpringBoot、JPA和Elasticsearch的实践经验，包括配置、映射、JPA规则及关键字详解，适合初学者对比学习。

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关于用scala 写Elasticsearch +springboot+jpa

最近在项目中用到这个框架结构,用起来特别方便,分享下

引包 build.sbt

"org.springframework.boot" % "spring-boot-starter-data-elasticsearch" %verSpringBoot,

配置,我的是springcloud,配置文件配置在对应文件中就行了,

spring:
  data:
    elasticsearch:
      cluster-name: xxxxx
      cluster-nodes: xxx:9300

cluster-nodes: xxx:9300

  repositories:
    enabled: true

@Document( indexName = "xxx", `type` = "xxxx" )
@Mapping( mappingPath = "jsons/userjson.json" )
@JsonIdentityInfo( generator = classOf[JSOGGenerator] )
class UserEntity() {
  @BeanProperty
  var id:Long=_
  @BeanProperty
  var uid:String=_
}

映射文件userjson.json

{
  "article": {
    "properties": {
      "id": {
        "type": "long"
      },
      "uid": {
        "type": "keyword"
      ,"index":"false"
      }
    }
  }
}

注,因为springboot不是很兼容elasticsearch 框架,在elasticsearch库中,需要put
我配置的是kibana


PUT /xxx
{
"mappings": {
  "xxx": {
    "properties": {
      "id": {
        "type": "long"
      },
      "uid": {
        "type": "keyword"
      }
}
}
}
}

下面写jpa

@Repository
 trait UserDao extends CrudRepository[UserEntity,java.lang.Long] with ElasticsearchRepository[UserEntity,java.lang.Long]{
//写jpa的规则,就不介绍了,文章最后有个连接,可以借鉴下,这不本文的重点



}

注,因为在有的地方elasticsearch 并不兼容于scala的类型所以在映射的时候尽量用java类型,在其他地方做个隐式转换就好了
隐式转换

import scala.collection.JavaConverters._

jpa关键字介绍下
关键字
使用示例
等同于的ES查询

关键字	示例	es查询
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(Collectionnames)	{“bool” : {“must” : {“bool” : {“should” : [ {“field” : {“name” : “?”}}, {“field” : {“name” : “?”}} ]}}}}
NotIn	findByNameNotIn(Collectionnames)	{“bool” : {“must_not” : {“bool” : {“should” : {“field” : {“name” : “?”}}}}}}
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}}}}