1. 前言
1.1. 集成方式
Spring Boot中集成Elasticsearch有4種方式：
本文用后面兩種方式來(lái)分別連接并操作Elasticsearch
1.2. 環(huán)境與配置
服務(wù)端：elasticsearch-6.3.2 1臺(tái)
客戶端：elasticsearch 6.4.1
服務(wù)端配置文件：elasticsearch.yml
/etc/security/limits.conf
/etc/sysctl.conf
1.3. 版本
Spring Boot 2.0.5默認(rèn)的elasticsearch版本很低，這里我們用最新版本6.4.1
如果啟動(dòng)過(guò)程中出現(xiàn)
則說(shuō)明，elasticsearch依賴的jar包版本不一致虫碉，統(tǒng)一改成6.4.1即可
另外焦除，Spring Boot 2.0.5依賴的spring-data-elasticsearch版本是3.0.1斥铺，需要升級(jí)到3.1.0
SpringBoot+Elasticsearch
2. 依賴
<?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
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.cjs.example</groupId>
<artifactId>cjs-elasticsearch-example</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>cjs-elasticsearch-example</name>
<description></description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<elasticsearch.version>6.4.1</elasticsearch.version>
<spring.data.elasticsearch.version>3.1.0.RELEASE</spring.data.elasticsearch.version>
</properties>
<dependencies>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>${elasticsearch.version}</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>${elasticsearch.version}</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client</artifactId>
<version>${elasticsearch.version}</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>transport-netty4-client</artifactId>
<version>${elasticsearch.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-elasticsearch</artifactId>
<version>${spring.data.elasticsearch.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
3. application.properties
也許，大家會(huì)疑惑，配置文件中明明寫(xiě)的端口是9200，為何這里配置文件中連接的時(shí)候?qū)懙亩丝谑?300呢天梧？
因?yàn)椋渲?200是通過(guò)HTTP連接的端口霞丧，9300是TCP連接的端口
SpringBoot+Elasticsearch
4. 操作
4.1. 使用Spring Data Elasticsearch Repositories操作Elasticsearch
首先呢岗，定義一個(gè)實(shí)體類
package com.cjs.example.entity;
import lombok.Data;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import java.io.Serializable;
@Data
@Document(indexName = "commodity")
public class Commodity implements Serializable {
@Id
private String skuId;
private String name;
private String category;
private Integer price;
private String brand;
private Integer stock;
這里定義了Commodity實(shí)例，表示商品。在Elasticsearch 6.X 版本中后豫，不建議使用type悉尾，而且在7.X版本中將會(huì)徹底廢棄type，所以此處我只指定了indexName挫酿，沒(méi)有指定type焕襟。這里，一個(gè)Commodity代表一個(gè)商品饭豹，同時(shí)代表一條索引記錄。
類比關(guān)系型數(shù)據(jù)庫(kù)的話务漩，Index相當(dāng)于表拄衰，Document相當(dāng)于記錄
然后，需要自己定義一個(gè)接口饵骨，并繼承ElasticsearchRepository
SpringBoot+Elasticsearch
package com.cjs.example.dao;
import com.cjs.example.entity.Commodity;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface CommodityRepository extends ElasticsearchRepository<Commodity, String> {
這里的Repository相當(dāng)于DAO翘悉，操作mysql還是elasticsearch都是一樣的
接下來(lái)，定義service接口
package com.cjs.example.service;
import com.cjs.example.entity.Commodity;
import org.springframework.data.domain.Page;
import java.util.List;
public interface CommodityService {
long count();
Commodity save(Commodity commodity);
void delete(Commodity commodity);
Iterable<Commodity> getAll();
List<Commodity> getByName(String name);
Page<Commodity> pageQuery(Integer pageNo, Integer pageSize, String kw);
實(shí)現(xiàn)類
package com.cjs.example.service.impl;
import com.cjs.example.entity.Commodity;
import com.cjs.example.dao.CommodityRepository;
import com.cjs.example.service.CommodityService;
import org.elasticsearch.index.query.MatchQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.elasticsearch.core.query.NativeSearchQueryBuilder;
import org.springframework.data.elasticsearch.core.query.SearchQuery;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
@Service
public class CommodityServiceImpl implements CommodityService {
@Autowired
private CommodityRepository commodityRepository;
@Override
public long count() {
return commodityRepository.count();
@Override
public Commodity save(Commodity commodity) {
return commodityRepository.save(commodity);
@Override
public void delete(Commodity commodity) {
commodityRepository.delete(commodity);
// commodityRepository.deleteById(commodity.getSkuId());
@Override
public Iterable<Commodity> getAll() {
return commodityRepository.findAll();
@Override
public List<Commodity> getByName(String name) {
List<Commodity> list = new ArrayList<>();
MatchQueryBuilder matchQueryBuilder = new MatchQueryBuilder("name", name);
Iterable<Commodity> iterable = commodityRepository.search(matchQueryBuilder);
iterable.forEach(e->list.add(e));
return list;
@Override
public Page<Commodity> pageQuery(Integer pageNo, Integer pageSize, String kw) {
SearchQuery searchQuery = new NativeSearchQueryBuilder()
.withQuery(QueryBuilders.matchPhraseQuery("name", kw))
.withPageable(PageRequest.of(pageNo, pageSize))
.build();
return commodityRepository.search(searchQuery);
在這個(gè)Service中演示了增刪查改操作居触，還有分頁(yè)查詢
最后妖混，寫(xiě)一個(gè)測(cè)試類測(cè)試其中的方法
package com.cjs.example;
import com.cjs.example.entity.Commodity;
import com.cjs.example.service.CommodityService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.domain.Page;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class CjsElasticsearchExampleApplicationTests {
@Autowired
private CommodityService commodityService;
@Test
public void contextLoads() {
System.out.println(commodityService.count());
@Test
public void testInsert() {
Commodity commodity = new Commodity();
commodity.setSkuId("1501009001");
commodity.setName("原味切片面包（10片裝）");
commodity.setCategory("101");
commodity.setPrice(880);
commodity.setBrand("良品鋪?zhàn)?);
commodityService.save(commodity);
commodity = new Commodity();
commodity.setSkuId("1501009002");
commodity.setName("原味切片面包（6片裝）");
commodity.setCategory("101");
commodity.setPrice(680);
commodity.setBrand("良品鋪?zhàn)?);
commodityService.save(commodity);
commodity = new Commodity();
commodity.setSkuId("1501009004");
commodity.setName("元?dú)馔滤?50g");
commodity.setCategory("101");
commodity.setPrice(120);
commodity.setBrand("百草味");
commodityService.save(commodity);
@Test
public void testDelete() {
Commodity commodity = new Commodity();
commodity.setSkuId("1501009002");
commodityService.delete(commodity);
@Test
public void testGetAll() {
Iterable<Commodity> iterable = commodityService.getAll();
iterable.forEach(e->System.out.println(e.toString()));
@Test
public void testGetByName() {
List<Commodity> list = commodityService.getByName("面包");
System.out.println(list);
@Test
public void testPage() {
Page<Commodity> page = commodityService.pageQuery(0, 10, "切片");
System.out.println(page.getTotalPages());
System.out.println(page.getNumber());
System.out.println(page.getContent());
以上，便是使用Elasticsearch Repositories的方式
4.2. 使用ElasticsearchTemplate方式操作Elasticsearch
package com.cjs.example;
import com.cjs.example.entity.Commodity;
import org.elasticsearch.index.query.QueryBuilders;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.data.elasticsearch.core.query.*;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class ElasticsearchTemplateTest {
@Autowired
public ElasticsearchTemplate elasticsearchTemplate;
@Test
public void testInsert() {
Commodity commodity = new Commodity();
commodity.setSkuId("1501009005");
commodity.setName("葡萄吐司面包（10片裝）");
commodity.setCategory("101");
commodity.setPrice(160);
commodity.setBrand("良品鋪?zhàn)?);
IndexQuery indexQuery = new IndexQueryBuilder().withObject(commodity).build();
elasticsearchTemplate.index(indexQuery);
@Test
public void testQuery() {
SearchQuery searchQuery = new NativeSearchQueryBuilder()
.withQuery(QueryBuilders.matchQuery("name", "吐司"))
.build();
List<Commodity> list = elasticsearchTemplate.queryForList(searchQuery, Commodity.class);
System.out.println(list);
ElasticsearchTemplate是自動(dòng)配置的
SpringBoot+Elasticsearch
5. 演示
SpringBoot+Elasticsearch
SpringBoot+Elasticsearch
6. 工程結(jié)構(gòu)
SpringBoot+Elasticsearch
7. 參考
https://docs.spring.io/spring-data/elasticsearch/docs/3.1.0.RELEASE/reference/html/#repositories.query-methods.details
