# SpringBoot-Elasticsearch-Demo
### 题外话:
本实例为博主原创,属于简单易上手并且能够拿来就用的SpringBoot ES 项目,全文使用的是ElasticsearchTemplate进行开发。
本实例涵盖ES中的各类操作,如索引操作、CRUD操作、批处理、结果排序、分页查询、检索查询、关键字查询、高亮显示、逻辑查询、过滤查询、分组查询等等。并且已经过生产环境验证,各位可放心使用。如有不对之处欢迎在博客中留言交流。谢谢!!!
**欢迎各位大神添加微信公众号:“愿为最亮星”,我们将在这一起探讨Java技术。**
### 1、CSDN 专栏:《Elasticsearch 入门和项目实战》
#### 博客路径: https://blog.csdn.net/a767815662/category_9190277.html
|--- 第一讲:简介以及安装
|--- 第二讲:kibana 安装以及ES 的概念名词
|--- 第三讲:ES 基本操作、批处理
|--- 第四讲:ES 高级查询
|--- 第五讲:ES 项目实战(一):简介及环境搭建
|--- 第六讲:ES 项目实战(二):基本操作、批处理
|--- 第七讲:ES 项目实战(三):高级查询
|--- TODO: 持续更新中~~~
### 2、项目介绍:
本项目是基于SpringBoot 2.1.3 版本进行开发的,采用的是 Spring Data Elasticsearch。
ElasticsearchTemplate:框架封装的用于便捷操作Elasticsearch的模板类
NativeSearchQueryBuilder:用于生成查询条件的构建器,需要去封装各种查询条件
QueryBuilder:该接口表示一个查询条件,其对象可以通过QueryBuilders工具类中的方法快速生成各种条件
boolQuery():生成bool条件,相当于 "bool": { }
matchQuery():生成match条件,相当于 "match": { }
rangeQuery():生成range条件,相当于 "range": { }
AbstractAggregationBuilder:用于生成分组查询的构建器,其对象通过AggregationBuilders工具类生成
Pageable:表示分页参数,对象通过PageRequest.of(页数, 容量)获取
SortBuilder:排序构建器,对象通过SortBuilders.fieldSort(字段).order(规则)获取
### 3、项目结构介绍:
--- com.xinghua.elasticsearchservice
| --- common 基础依赖
| --- dto 展示层
| --- model 基础实体类
| --- utils 基础工具包
| --- service 基础业务包(通用CRUD,批量操作接口)
| --- impl 基础业务实现层(通用CRUD,批量操作实现)
| --- constans 常量包
| --- controller 视图层
| --- model 实体
| --- service 业务层
| --- impl 业务实现层
| --- utils 工具包
### 4、项目集成的插件
--- swagger API
--- lombok
--- elasticsearch
--- fastjson
### 5、已实现的ES功能
--- IBaseService
| --- getIndexName(): 获取ES索引名称
| --- getIndexType(): 获取ES索引类型
| --- getEntityClass(): 返回泛型上的Class对象
| --- init(List<T> entityList): 初始化数据
| --- createEntityEsIndex(): 创建索引和映射
| --- saveOrUpdate(T entityModel): 新增或修改
| --- delete(String id): 删除entity
| --- deleteIndex(): 删除索引
| --- batchInsertOrUpdate(List<T> entityModelList):批量新增/更新
以下是高级查询相关的接口
| --- getPageRequest(int pageNumber, int pageSize):获取PageRequest对象
| --- searchPage(NativeSearchQueryBuilder nativeSearchQueryBuilder, int pageNumber, int pageSize):分页查询
| --- searchPageBySort(List<SortDTO> sortDTOList, NativeSearchQueryBuilder nativeSearchQueryBuilder, int pageNumber, int pageSize):分页查询 按照指定字段排序,多个字段按照先后顺序排序
| --- searchList(NativeSearchQueryBuilder nativeSearchQueryBuilder):查询操作
| --- searchListBySort(List<SortDTO> sortDTOList, NativeSearchQueryBuilder nativeSearchQueryBuilder):查询操作-按照指定字段排序,多个字段按照先后顺序排序
| --- query(NativeSearchQueryBuilder nativeSearchQueryBuilder):用于分组查询
### 6、实例测试类
--- BaseProductEsTest:基础功能测试类
--- ProductEsTest:各种高级查询功能测试类
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