前言
最近在学习elasticsearch,所以从最简单的增删改功能开始,下面是我的版本依赖,我使用的是java17
、elasticsearch-java8.7
和spring-boot3.0
org.springframework.boot
spring-boot-starter-data-elasticsearch
co.elastic.clients
elasticsearch-java
8.7.1
静态index操作
我使用的是ElasticsearchOperations
来实现,先看看基础类定义:
@Data
@Document(indexName = "index_urls", createIndex = true)
public class UrlIndex {
private String id;
private String uid;
private String title;
// 下拉提示建议使用的字段,注意:Completion类型字段,不能做筛选用
// @CompletionField(analyzer="ik_smart",searchAnalyzer="ik_smart", maxInputLength = 100)
private Completion suggest;
private String url;
private String domain;
private String description;
private String favicon;
private Date createdDt;//创建时间
private Date updatedDt;//更新时间
}
定义好之后,我们来实现增删改功能:
新增:
UrlIndex url = JSONObject.parseObject(msg, UrlIndex.class);
UrlIndex urlIndex = elasticsearchOperations.save(url);
编辑:
Url url = JSONObject.parseObject(msg, Url.class);
UrlIndex urlIndex = elasticsearchOperations.get(url.getId(), UrlIndex.class);
if (urlIndex != null) {
urlIndex.setTitle(url.getTitle());
// 存在即更新,,注意要设置index
elasticsearchOperations.save(urlIndex);
}
删除:
elasticsearchOperations.delete(id, UrlIndex.class);
动态index操作
如果我们不想在实体类上添加@Document
来指定index,我们如何实现呢?
@Document(indexName = "index_urls", createIndex = true)
新增:
UrlIndex url = JSONObject.parseObject(msg, UrlIndex.class);
IndexCoordinates indexCoordinates = IndexCoordinates.of("index_name");
UrlIndex urlIndex = elasticsearchOperations.save(url, indexCoordinates);
编辑:
IndexCoordinates indexCoordinates = IndexCoordinates.of("index_name");
UrlIndex resUrl = JSONObject.parseObject(msg, UrlIndex.class);
// 通过get查询出es数据,注意要设置index
UrlIndex urlIndex = elasticsearchOperations.get(resUrl.getId(), UrlIndex.class, indexCoordinates);
if (urlIndex != null) {
urlIndex.setTitle(resUrl.getTitle());
urlIndex.setSuggest(resUrl.getSuggest());
// 存在即更新,,注意要设置index
elasticsearchOperations.save(urlIndex, indexCoordinates);
}
删除:
IndexCoordinates indexCoordinates = IndexCoordinates.of("index_name");
elasticsearchOperations.delete(msg, indexCoordinates);
总结
1、在实体类上通过设置@Document(indexName = "index_urls", createIndex = true)
就可以实现索引就可以完成增删改功能
2、但是如果你使用动态索引,则要指定你的索引名
3、我使用的是ElasticsearchOperations
当然还有其它的实现方式,如EnableElasticsearchRepositories