Spring Boot结合Jest实现对ElasticSearch的全文检索，分词检索，分页，高亮关键词，多字段检索
前提：本地已配置好es，我本地安装es为6.8.0，ik分词器也是6.8.0，这两个版本号必须一致的，以及es中已经存在数据
es下载地址：es下载，可以选版本
ik分词器下载地址：ik分词器下载，选取同样版本
数据格式及索引名称，可以es-head中看见
es-head中创建索引
{
"mappings":{
"downtype":{
"properties":{
"itemid":{
"type":"long",
"fields":{
"keyword":{
"type":"keyword"
}
}
},
"catid":{
"type":"integer",
"fields":{
"keyword":{
"type":"keyword"
}
}
},
"areaid":{
"type":"integer",
"fields":{
"keyword":{
"type":"keyword"
}
}
},
"title":{
"type":"text",
"analyzer":"ik_max_word",
"fields":{
"keyword":{
"type":"keyword"
}
}
},
"keyword":{
"type":"text",
"analyzer":"ik_max_word",
"fields":{
"keyword":{
"type":"keyword"
}
}
}
}
}
}
}
- 要检索的字段一定要在创建索引的时候带上"analyzer":“ik_max_word”,或者 ik_smart
这是分词的关键，需要检索的字段的type值必须为keyword， 在上面 的索引源码中很清楚
项目结构：
接下来直接上源码
application.yml
server:
port: 6325
spring:
elasticsearch:
jest:
uris:
- http://localhost:9200 # ES�������ĵ�ַ��
read-timeout: 5000
debug: true
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>esdemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>esdemo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>io.searchbox</groupId>
<artifactId>jest</artifactId>
</dependency>
<dependency>
<groupId>net.java.dev.jna</groupId>
<artifactId>jna</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.vaadin.external.google</groupId>
<artifactId>android-json</artifactId>
<version>0.0.20131108.vaadin1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.10.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
PageController
package com.example.esdemo.controller;
import com.example.esdemo.entity.Down;
import com.example.esdemo.service.PageService;
import net.sf.json.JSONArray;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("/pageController")
public class PageController {
@Autowired
PageService pageService;
@Component
public interface DownRepository extends ElasticsearchRepository<Down, Long> {
}
@RequestMapping(value="/search", method= RequestMethod.GET)
public List<Down> save(String title) {
List<Down> downList = null;
if(StringUtils.isNotEmpty(title)) {
downList = pageService.searchDown(title);
}
JSONArray jsonArray = JSONArray.fromObject(downList);
System.out.println("查询结果："+ jsonArray);
//或者在postman中访问http://localhost:6325/downController/search?title=人民上海
return downList;
}
}
Down
package com.example.esdemo.entity;
import java.io.Serializable;
public class Down implements Serializable {
private static final long serialVersionUID = -763638353551774166L;
// 索引名称
public static final String DOWN_NAME = "down";
//索引类型
public static final String TYPE = "downtype";
private Long itemid;
private Integer catid;
private Integer areaid;
private String title;
private String keyword;
public Down() {
super();
}
public Down(Long itemid,Integer catid,Integer areaid,String title,String keyword) {
this.itemid = itemid;
this.catid = catid;
this.areaid = areaid;
this.title = title;
this.keyword = keyword;
}
public Long getItemid() {
return itemid;
}
public void setItemid(Long itemid) {
this.itemid = itemid;
}
public Integer getCatid() {
return catid;
}
public void setCatid(Integer catid) {
this.catid = catid;
}
public Integer getAreaid() {
return areaid;
}
public void setAreaid(Integer areaid) {
this.areaid = areaid;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getKeyword() {
return keyword;
}
public void setKeyword(String keyword) {
this.keyword = keyword;
}
}
PageServicelmpl
package com.example.esdemo.service.impl;
import com.example.esdemo.entity.Down;
import com.example.esdemo.service.PageService;
import io.searchbox.client.JestClient;
import io.searchbox.client.JestResult;
import io.searchbox.core.Search;
import io.searchbox.core.SearchResult;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortOrder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
@Service
public class PageServicelmpl implements PageService {
private static final Logger LOGGER = LoggerFactory.getLogger(TestServiceImpl.class);
@Autowired
private JestClient jestClient;
@Override
public List<Down> searchDown(String title) {
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
//检索条件
if (title != null) {
boolQueryBuilder.should(QueryBuilders.commonTermsQuery("title",title));
boolQueryBuilder.should(QueryBuilders.commonTermsQuery("keyword", title));
}
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.field("title");//高亮title
highlightBuilder.field("keyword");//高亮keyword
highlightBuilder.preTags("").postTags("");//高亮样式
//highlightBuilder.fragmentSize(20);//高亮长度
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.highlighter(highlightBuilder);
//排序
searchSourceBuilder.sort("itemid", SortOrder.ASC);
//分页
int page = 1;
int size = 10;
int index = (page - 1) * size;
// searchSourceBuilder.from(index);
// searchSourceBuilder.size(size);
//
searchSourceBuilder.query(boolQueryBuilder).from(index);
searchSourceBuilder.query(boolQueryBuilder).size(size); //需要检索的数据条数，这里可以设计为分页
Search search = new Search.Builder(searchSourceBuilder.toString())
.addIndex(Down.DOWN_NAME).addType(Down.TYPE).build();
try {
//TransformerClosure jestClient;
JestResult result = jestClient.execute(search);
System.out.println("本次查询共查到："+ ((SearchResult) result).getTotal()+"条数据！");
System.out.println("每页显示："+ size+"条数据！");
List<SearchResult.Hit<Down,Void>> hits = ((SearchResult) result).getHits(Down.class);
List<Down> downList = new ArrayList<Down>();
for (SearchResult.Hit<Down, Void> hit : hits) {
Down source = hit.source;
//获取高亮后的内容
Map<String, List<String>> highlight = hit.highlight;
if (highlight!=null){
List<String> titles = highlight.get("title");//高亮后的title
if(titles!=null){
source.setTitle(titles.get(0));
}
List<String> keyword = highlight.get("keyword");//高亮后的keyword
if(keyword!=null){
source.setKeyword(keyword.get(0));
}
}
Down down = new Down();
//重新构建类
down.setTitle(source.getTitle());
down.setKeyword(source.getKeyword());
down.setItemid(source.getItemid());
down.setCatid(source.getCatid());
down.setAreaid(source.getAreaid());
downList.add(down);
}
return downList;
} catch (IOException e) {
LOGGER.error(e.getMessage());
e.printStackTrace();
}
return null;
}
}
PageService
package com.example.esdemo.service;
import com.example.esdemo.entity.Down;
import java.util.List;
public interface PageService {
List<Down> searchDown(String title);
}
只要你本地es环境已经配好，代码直接复制过去就绝对可以运行起来
下面展示一下搜索结果
有问题的可以加我QQ：63211591来交流