SpringBoot——Elasticsearch（二十八）

SpringBoot

安装ES

依赖

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<!-- 添加 spring-data-elasticsearch的依赖 -->
<dependency>
	<groupId> org.springframework.boot </groupId>
	<artifactId> spring-boot-starter-data-elasticsearch </artifactId>
l</dependency>

配置

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spring:
 application:
 name: search
 data:
 elasticsearch:
 cluster-name: my-cluster
 cluster-nodes: localhost:9300

也许，大家会疑惑，配置文件中明明写的端口是9200，为何这里配置文件中连接的时候写的端口是9300呢？

因为，配置9200是通过HTTP连接的端口，9300是TCP连接的端口

spring.data.elasticsearch.cluster-name：集群名称

spring.data.elasticsearch.cluster-nodes：集群节点地址列表，多个节点用英文逗号（,）分隔

创建ES文档和映射

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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;
}

这里定义了Commodity实例，表示商品。在Elasticsearch 6.X 版本中，不建议使用type，而且在7.X版本中将会彻底废弃type，所以此处我只指定了indexName，没有指定type。这里，一个Commodity代表一个商品，同时代表一条索引记录。

ElasticsearchRepository

Spring提供的ES的Repository接口为ElasticsearchCrudRepository，所以我们就可以直接定义额新的接口，然后实现ElasticsearchCrudRepository即可，ElasticsearchRepository也提供了基本的增删改查接口。

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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> {
}

接下来，定义service接口

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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);
}

实现类

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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);
    }
}

测试类

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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片装）");
        commodity.setCategory("101");
        commodity.setPrice(880);
        commodity.setBrand("良品铺子");
        commodityService.save(commodity);
        commodity = new Commodity();
        commodity.setSkuId("1501009002");
        commodity.setName("原味切片面包（6片装）");
        commodity.setCategory("101");
        commodity.setPrice(680);
        commodity.setBrand("良品铺子");
        commodityService.save(commodity);
        commodity = new Commodity();
        commodity.setSkuId("1501009004");
        commodity.setName("元气吐司850g");
        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());
    }
}

ElasticsearchTemplate

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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片装）");
        commodity.setCategory("101");
        commodity.setPrice(160);
        commodity.setBrand("良品铺子");
        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);
    }
}

本文标题:SpringBoot——Elasticsearch（二十八）

文章作者:南有乔木

发布时间:2020-07-20, 15:35:54

最后更新:2020-07-21, 16:00:24

原始链接:http://yoursite.com/2020/07/20/SpringBoot%E2%80%94%E2%80%94Elasticsearch%EF%BC%88%E4%BA%8C%E5%8D%81%E5%85%AB%EF%BC%89/

许可协议: "署名-非商用-相同方式共享 4.0" 转载请保留原文链接及作者。

文章目录
  1. 1. 安装ES
  2. 2. 依赖
  3. 3. 配置
  4. 4. 创建ES文档和映射
  5. 5. ElasticsearchRepository
  6. 6. ElasticsearchTemplate
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