ElasticSearch-Spring Data ElasticSearch(RestHighLevelClient )操作es（六）

本文使用的是springboot 2.2.x版本，elasticsearch使用的是6.8版本
官方文档参考：https://docs.spring.io/spring-data/elasticsearch/docs/4.2.7/reference/html/#new-features

对应版本

引入maven依赖

    org.springframework.boot
    spring-boot-starter-data-elasticsearch

springboot连接es的两种方式 方式一： 配置类

@Configuration
public class RestClientConfig  {

   
   @Bean
   RestHighLevelClient client() {

       ClientConfiguration clientConfiguration = ClientConfiguration.builder()
               .connectedTo("填写es服务的ip+端口")
               .build();
       return RestClients.create(clientConfiguration).rest();
   }
}

方式二：yml方式

spring:
  elasticsearch:
    rest:
      uris: 106.52.98.231:19200

基于RestHighLevelClient 的入门例子 查询带高亮

更新

添加

删除

批量更新

使用ElasticSearchRepository进行基础查询

注意：spring data elasticsearch 在4.0版本后已经将@document注解的type属性弃用

使用ElasticSearchRepository自定义基本查询 语法形式

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 (Collectionnames)	{"bool" : {"must" : {"bool" : {"should" : [ {"field" : {"name" : "?"}}, {"field" : {"name" : "?"}} ]}}}}
NotIn	findByNameNotIn (Collectionnames)	{"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	findByAvailable TrueOrderByNameDesc	{"sort" : [{ "name" : {"order" : "desc"} }],"bool" : {"must" : {"field" : {"available" : true}}}}

如何使用？

public interface BookRepository extends ElasticsearchRepository {

    //根据作者查询
    List findByAuthor(String keyword);

    //根据内容查询
    List findByContent(String keyword);

    //根据内容和名字查
    List findByNameAndContent(String name,String content);

    List findByNameAndContentAndPrice(String name,String content,Double price);

    //根据内容或名称查询
    List findByNameOrContent(String name,String content);

    //范围查询
    List findByPriceBetween(Double start,Double end);

    //查询名字以xx开始的
    List  findByNameStartingWith(String name);

    //查询某个字段值是否为false
    List  findByNameFalse();
    
    //.......
}

使用RestHighLevelClient进行复杂高亮查询（ElasticsearchRepository不能满足高亮） 高亮

关于高亮字段输出的结果是这样子的

{detail=[detail], fragments[[好老师篮球篮球好篮球]], hobby=[hobby], fragments[[篮球]]}