elasticsearch+springboot基础API操作笔记
elasticsearch+springboot基础API操作笔记
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- Index相关操作
- Doc相关操作
代码链接: gitHub.
Index相关操作
package com.example.es.test;
import cn.hutool.log.Log;
import cn.hutool.log.LogFactory;
import org.apache.http.HttpHost;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.support.master.AcknowledgedResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.CreateIndexResponse;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.elasticsearch.client.indices.GetIndexResponse;
import org.junit.Test;
import java.io.IOException;
public class IndexAbout {
private final static Log logger= LogFactory.get(IndexAbout.class);
//创建ES客户端
private static RestHighLevelClient edClient = new RestHighLevelClient(RestClient.builder(new HttpHost("127.0.0.1",9200)));
/**
* 创建索引
*/
@Test
public void creatIndex() throws Exception{
CreateIndexResponse ybz = edClient.indices().create(new CreateIndexRequest("ybz"), RequestOptions.DEFAULT);
boolean acknowledged = ybz.isAcknowledged();
logger.info("添加索引是否成功："+acknowledged);
//关闭ES客户端
edClient.close();
}
/**
* 查询索引
*/
@Test
public void getIndex() throws IOException {
GetIndexResponse ybz = edClient.indices().get(new GetIndexRequest("ybz"), RequestOptions.DEFAULT);
logger.info("索引："+ybz);
logger.info("索引Aliases："+ybz.getAliases());
logger.info("索引Settings："+ybz.getSettings());
logger.info("索引Mappings："+ybz.getMappings());
edClient.close();
}
/**
* 删除索引
*/
@Test
public void delIndex() throws IOException {
AcknowledgedResponse ybz = edClient.indices().delete(new DeleteIndexRequest("ybz"), RequestOptions.DEFAULT);
logger.info("索引删除："+ybz.isAcknowledged());
edClient.close();
}
}
Doc相关操作
package com.example.es.test;
import cn.hutool.log.Log;
import cn.hutool.log.LogFactory;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.example.es.bean.User;
import org.apache.http.HttpHost;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.support.master.AcknowledgedResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.CreateIndexResponse;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.elasticsearch.client.indices.GetIndexResponse;
import org.elasticsearch.common.unit.Fuzziness;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.*;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortOrder;
import org.junit.Test;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class DocAbout {
private final static Log logger = LogFactory.get(DocAbout.class);
//创建ES客户端
private static RestHighLevelClient edClient = new RestHighLevelClient(RestClient.builder(new HttpHost("127.0.0.1",9200)));
private User user;
private List<User> userList = new ArrayList<>();
//初始化模拟数据
{
User user1 = new User();
user1.setName("张三");
user1.setSex("男人");
user1.setAge(27);
this.user = user1;
for(int i=0; i <10;i++){
User user2 = new User();
user2.setName("zhang"+i);
user2.setSex(i%2 == 0 ?"man":"woman");
user2.setAge(i);
userList.add(user2);
}
}
/**
* 插入数据
*/
@Test
public void insertDocs() throws Exception{
String userJsonStr = JSON.toJSONString(user);
logger.info("数据信息："+userJsonStr);
IndexRequest ybzRequest = new IndexRequest().index("ybz").id("0001");
ybzRequest.source(userJsonStr, XContentType.JSON);
IndexResponse response = edClient.index(ybzRequest, RequestOptions.DEFAULT);
logger.info("返回："+response);
edClient.close();
}
/**
* 修改数据
*/
@Test
public void updateDocs() throws Exception{
UpdateRequest ybzRequest = new UpdateRequest();
ybzRequest.index("ybz").id("0001");
ybzRequest.doc(XContentType.JSON,"sex","女人");
UpdateResponse response = edClient.update(ybzRequest, RequestOptions.DEFAULT);
logger.info("返回："+response);
edClient.close();
}
/**
* 查询数据
*/
@Test
public void getDocs() throws Exception{
GetRequest ybzRequest = new GetRequest().index("ybz").id("0001");
GetResponse response = edClient.get(ybzRequest, RequestOptions.DEFAULT);
logger.info("返回："+response);
logger.info("返回数据："+response.getSource());
edClient.close();
}
/**
* 删除数据
*/
@Test
public void delDocs() throws Exception{
DeleteRequest ybzRequest = new DeleteRequest().index("ybz").id("0001");
DeleteResponse response = edClient.delete(ybzRequest, RequestOptions.DEFAULT);
logger.info("返回："+response);
edClient.close();
}
/**
* 插入数据(批量)
*/
@Test
public void insertDocsBatch() throws Exception{
BulkRequest request = new BulkRequest();
userList.forEach(x->{
String userJsonStr = JSON.toJSONString(x);
logger.info("数据信息："+userJsonStr);
request.add(new IndexRequest().index("ybz").id(x.getAge()+"").source(userJsonStr,XContentType.JSON));
});
BulkResponse response = edClient.bulk(request, RequestOptions.DEFAULT);
logger.info("批量插入返回："+response);
edClient.close();
}
/**
* 删除数据(批量)
*/
@Test
public void delDocsBatch() throws Exception{
BulkRequest request = new BulkRequest();
userList.forEach(x->{
String userJsonStr = JSON.toJSONString(x);
logger.info("数据信息："+userJsonStr);
request.add(new DeleteRequest().index("ybz").id(x.getAge()+""));
});
BulkResponse response = edClient.bulk(request, RequestOptions.DEFAULT);
logger.info("批量删除返回："+response);
edClient.close();
}
/**
* 查询数据(带条件)
*/
@Test
public void getDocsBatch() throws Exception{
SearchRequest ybzRequest = new SearchRequest();
ybzRequest.indices("ybz");
//全量查询
//SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
//单条件查询
//SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.termQuery("age",5));
//分页查询
//SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
//query.from(0).size(2);
//排序
//SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
//query.sort("age", SortOrder.DESC);
//过滤字段
//SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
//String[] excludes = {};
//String[] includes = {"name"};
//query.fetchSource(includes,excludes);
//多条件组合
//SearchSourceBuilder builder = new SearchSourceBuilder();
//BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
//boolQueryBuilder.must(QueryBuilders.matchQuery("age",5))
//.must(QueryBuilders.matchQuery("sex","女的"));
//.mustNot(QueryBuilders.matchQuery("sex","男的"));
//.should(QueryBuilders.matchQuery("age",6));
//RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery("age");
//rangeQueryBuilder.gte(5).lt(9); //>=5 <9
//builder.query(rangeQueryBuilder);
//模糊查询
//SearchSourceBuilder builder = new SearchSourceBuilder();
//builder.query(QueryBuilders.fuzzyQuery("name", "张5").fuzziness(Fuzziness.ONE)); //Fuzziness.？差几个字符 可以匹配
//高亮查询
//SearchSourceBuilder builder = new SearchSourceBuilder();
//TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("name", "zhang2");
//HighlightBuilder highlightBuilder = new HighlightBuilder();
//highlightBuilder.preTags("");
//highlightBuilder.postTags("");
//highlightBuilder.field("name");
//highlightBuilder.requireFieldMatch(true);
//builder.highlighter(highlightBuilder);
//聚合查询
//SearchSourceBuilder builder = new SearchSourceBuilder();
//AggregationBuilder aggregationBuilder = AggregationBuilders.max("maxAge").field("age"); //最大年龄
//builder.aggregation(aggregationBuilder);
SearchSourceBuilder builder = new SearchSourceBuilder();
AggregationBuilder aggregationBuilder = AggregationBuilders.terms("ageGroup").field("age"); //根据年龄分组
builder.aggregation(aggregationBuilder);
ybzRequest.source(builder);
SearchResponse response = edClient.search(ybzRequest, RequestOptions.DEFAULT);
logger.info("返回："+ response);
logger.info("返回数据："+ Arrays.toString(response.getHits().getHits()));
edClient.close();
}
}