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Elasticsearch 是一个分布式、可扩展、实时的搜索与数据分析引擎。 它能从项目一开始就赋予你的数据以搜索、分析和探索的能力,可用于实现全文搜索和实时数据统计。
Elasticsearch6.2.2的zip包,并解压到指定目录,下载地址:Elasticsearch 6.2.2 | Elastic
在elasticsearch-6.2.2\bin目录下执行以下命令:elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.2/elasticsearch-analysis-ik-6.2.2.zip
下载Kibana,作为访问Elasticsearch的客户端,请下载6.2.2版本的zip包,并解压到指定目录,下载地址:https://artifacts.elastic.co/downloads/kibana/kibana-6.2.2-windows-x86_64.zip
访问http://localhost:5601open in new window 即可打开Kibana的用户界面
Spring Data Elasticsearch是Spring提供的一种以Spring Data风格来操作数据存储的方式,它可以避免编写大量的样板代码。
- //标示映射到Elasticsearch文档上的领域对象
- public @interface Document {
- //索引库名次,mysql中数据库的概念
- String indexName();
- //文档类型,mysql中表的概念
- String type() default "";
- //默认分片数
- short shards() default 5;
- //默认副本数量
- short replicas() default 1;
-
- }
- //表示是文档的id,文档可以认为是mysql中表行的概念
- public @interface Id {
- }
- public @interface Field {
- //文档中字段的类型
- FieldType type() default FieldType.Auto;
- //是否建立倒排索引
- boolean index() default true;
- //是否进行存储
- boolean store() default false;
- //分词器名次
- String analyzer() default "";
- }
- //为文档自动指定元数据类型
- public enum FieldType {
- Text,//会进行分词并建了索引的字符类型
- Integer,
- Long,
- Date,
- Float,
- Double,
- Boolean,
- Object,
- Auto,//自动判断字段类型
- Nested,//嵌套对象类型
- Ip,
- Attachment,
- Keyword//不会进行分词建立索引的类型
- }
在接口中直接指定查询方法名称便可查询,无需进行实现,如商品表中有商品名称、标题和关键字,直接定义以下查询,就可以对这三个字段进行全文搜索。
- /**
- * 搜索查询
- *
- * @param name 商品名称
- * @param subTitle 商品标题
- * @param keywords 商品关键字
- * @param page 分页信息
- * @return
- */
- Page<EsProduct> findByNameOrSubTitleOrKeywords(String name, String subTitle, String keywords, Pageable page);
在idea中直接会提示对应字段
- @Query("{"bool" : {"must" : {"field" : {"name" : "?0"}}}}")
- Page<EsProduct> findByName(String name,Pageable pageable);
pms_product
:商品信息表pms_product_attribute
:商品属性参数表pms_product_attribute_value
:存储产品参数值的表- <!--Elasticsearch相关依赖-->
- <dependency>
- <groupId>org.springframework.boot</groupId>
- <artifactId>spring-boot-starter-data-elasticsearch<artifactId>
- </dependency>
修改application.yml文件,在spring节点下添加Elasticsearch相关配置。
- data:
- elasticsearch:
- repositories:
- enabled: true
- cluster-nodes: 127.0.0.1:9300 # es的连接地址及端口号
- cluster-name: elasticsearch # es集群的名称
不需要中文分词的字段设置成@Field(type = FieldType.Keyword)类型,需要中文分词的设置成@Field(analyzer = "ik_max_word",type = FieldType.Text)类型。
- package org.yxin.elasticsearch.document;
-
- import lombok.AllArgsConstructor;
- import lombok.Builder;
- import lombok.NoArgsConstructor;
- import org.springframework.data.annotation.Id;
- import org.springframework.data.elasticsearch.annotations.Document;
- import org.springframework.data.elasticsearch.annotations.Field;
- import org.springframework.data.elasticsearch.annotations.FieldType;
-
- import java.io.Serializable;
- import java.math.BigDecimal;
- import java.util.List;
-
- /**
- * 搜索中的商品信息
- */
- @Document(indexName = "pms", type = "product",shards = 1,replicas = 0)
- @Builder
- @AllArgsConstructor
- @NoArgsConstructor
- public class EsProduct implements Serializable {
- private static final long serialVersionUID = -1L;
- @Id
- private Long id;
- @Field(type = FieldType.Keyword)
- private String productSn;
- private Long brandId;
- @Field(type = FieldType.Keyword)
- private String brandName;
- private Long productCategoryId;
- @Field(type = FieldType.Keyword)
- private String productCategoryName;
- private String pic;
- @Field(analyzer = "ik_max_word",type = FieldType.Text)
- private String name;
- @Field(analyzer = "ik_max_word",type = FieldType.Text)
- private String subTitle;
- @Field(analyzer = "ik_max_word",type = FieldType.Text)
- private String keywords;
- private BigDecimal price;
- private Integer sale;
- private Integer newStatus;
- private Integer recommandStatus;
- private Integer stock;
- private Integer promotionType;
- private Integer sort;
- @Field(type =FieldType.Nested)
- private List<EsProductAttributeValue> attrValueList;
-
- public Long getId() {
- return id;
- }
-
- public void setId(Long id) {
- this.id = id;
- }
-
- public String getProductSn() {
- return productSn;
- }
-
- public void setProductSn(String productSn) {
- this.productSn = productSn;
- }
-
- public Long getBrandId() {
- return brandId;
- }
-
- public void setBrandId(Long brandId) {
- this.brandId = brandId;
- }
-
- public String getBrandName() {
- return brandName;
- }
-
- public void setBrandName(String brandName) {
- this.brandName = brandName;
- }
-
- public Long getProductCategoryId() {
- return productCategoryId;
- }
-
- public void setProductCategoryId(Long productCategoryId) {
- this.productCategoryId = productCategoryId;
- }
-
- public String getProductCategoryName() {
- return productCategoryName;
- }
-
- public void setProductCategoryName(String productCategoryName) {
- this.productCategoryName = productCategoryName;
- }
-
- public String getPic() {
- return pic;
- }
-
- public void setPic(String pic) {
- this.pic = pic;
- }
-
- public String getName() {
- return name;
- }
-
- public void setName(String name) {
- this.name = name;
- }
-
- public String getSubTitle() {
- return subTitle;
- }
-
- public void setSubTitle(String subTitle) {
- this.subTitle = subTitle;
- }
-
- public BigDecimal getPrice() {
- return price;
- }
-
- public void setPrice(BigDecimal price) {
- this.price = price;
- }
-
- public Integer getSale() {
- return sale;
- }
-
- public void setSale(Integer sale) {
- this.sale = sale;
- }
-
- public Integer getNewStatus() {
- return newStatus;
- }
-
- public void setNewStatus(Integer newStatus) {
- this.newStatus = newStatus;
- }
-
- public Integer getRecommandStatus() {
- return recommandStatus;
- }
-
- public void setRecommandStatus(Integer recommandStatus) {
- this.recommandStatus = recommandStatus;
- }
-
- public Integer getStock() {
- return stock;
- }
-
- public void setStock(Integer stock) {
- this.stock = stock;
- }
-
- public Integer getPromotionType() {
- return promotionType;
- }
-
- public void setPromotionType(Integer promotionType) {
- this.promotionType = promotionType;
- }
-
- public Integer getSort() {
- return sort;
- }
-
- public void setSort(Integer sort) {
- this.sort = sort;
- }
-
- public List<EsProductAttributeValue> getAttrValueList() {
- return attrValueList;
- }
-
- public void setAttrValueList(List<EsProductAttributeValue> attrValueList) {
- this.attrValueList = attrValueList;
- }
-
- public String getKeywords() {
- return keywords;
- }
-
- public void setKeywords(String keywords) {
- this.keywords = keywords;
- }
- }
继承ElasticsearchRepository接口,这样就拥有了一些基本的Elasticsearch数据操作方法,同时定义了一个衍生查询方法。
- package org.yxin.elasticsearch.repository;
-
-
- import com.github.pagehelper.Page;
- import org.springframework.data.domain.Pageable;
- import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
- import org.yxin.elasticsearch.document.EsProduct;
-
- /**
- * 商品ES操作类
- */
- public interface EsProductRepository extends ElasticsearchRepository<EsProduct, Long> {
- /**
- * 搜索查询
- *
- * @param name 商品名称
- * @param subTitle 商品标题
- * @param keywords 商品关键字
- * @param page 分页信息
- * @return
- */
- Page<EsProduct> findByNameOrSubTitleOrKeywords(String name, String subTitle, String keywords, Pageable page);
-
- Page<EsProduct> findByNameOrSubTitle(String name, String subTitle, Pageable page);
-
- Page<EsProduct> findById(Long id, Pageable page);
- @Override
- boolean existsById(Long aLong);
-
- Page<EsProduct> findByName(String name, Pageable page);
-
-
-
- }
- package org.yxin.service;
-
- import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
- import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
- import com.baomidou.mybatisplus.core.toolkit.Wrappers;
- import com.github.pagehelper.Page;
- import lombok.RequiredArgsConstructor;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- import org.springframework.beans.BeanUtils;
- import org.springframework.data.domain.PageRequest;
- import org.springframework.data.domain.Pageable;
- import org.yxin.elasticsearch.document.EsProduct;
- import org.yxin.elasticsearch.repository.EsProductRepository;
- import org.yxin.entity.PmsProduct;
- import org.yxin.mapper.PmsProductMapper;
- import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
- import org.springframework.stereotype.Service;
-
- import java.util.ArrayList;
- import java.util.Iterator;
- import java.util.List;
- import java.util.stream.Collectors;
-
- /**
- * <p>
- * 商品信息 服务实现类
- * </p>
- *
- * @author yxin
- * @since 2024-01-28
- */
- @Service
- @RequiredArgsConstructor
- public class PmsProductService extends ServiceImpl<PmsProductMapper, PmsProduct> {
- private static final Logger LOGGER = LoggerFactory.getLogger(PmsProductService.class);
- private final PmsProductMapper productDao;
- private final EsProductRepository productRepository;
-
- public int importAll() {
- LambdaQueryWrapper<PmsProduct> wrappers = Wrappers.lambdaQuery();
- List<EsProduct> esProductList = productDao.selectList(wrappers).stream().map(this::toEsProduct)
- .collect(Collectors.toList());
- Iterable<EsProduct> esProductIterable = productRepository.saveAll(esProductList);
- Iterator<EsProduct> iterator = esProductIterable.iterator();
- int result = 0;
- while (iterator.hasNext()) {
- result++;
- iterator.next();
- }
- return result;
- }
-
- public void delete(Long id) {
- productRepository.deleteById(id);
- }
-
- public EsProduct create(Long id) {
- EsProduct result = null;
- LambdaQueryWrapper<EsProduct> wrappers = Wrappers.lambdaQuery();
- wrappers.eq(EsProduct::getId,id);
- PmsProduct pmsProduct = productDao.selectById(wrappers);
- EsProduct esProduct = new EsProduct();
- BeanUtils.copyProperties(pmsProduct,esProduct);
- result = productRepository.save(esProduct);
- return result;
- }
-
- public void delete(List<Long> ids) {
- if (!CollectionUtils.isEmpty(ids)) {
- List<EsProduct> esProductList = new ArrayList<>();
- for (Long id : ids) {
- EsProduct esProduct = new EsProduct();
- esProduct.setId(id);
- esProductList.add(esProduct);
- }
- productRepository.deleteAll(esProductList);
- }
- }
-
- public Page<EsProduct> search(String keyword, Integer pageNum, Integer pageSize) {
- Pageable pageable = PageRequest.of(pageNum, pageSize);
- return productRepository.findByNameOrSubTitleOrKeywords(keyword, keyword, keyword, pageable);
- }
-
- public EsProduct toEsProduct(PmsProduct duct){
- return EsProduct.builder().productSn(duct.getProductSn())
- .brandId(duct.getBrandId())
- .brandName(duct.getBrandName())
- .id(duct.getId())
- .keywords(duct.getKeywords())
- .name(duct.getName())
- .pic(duct.getPic())
- .productCategoryId(duct.getProductCategoryId())
- .productCategoryName(duct.getProductCategoryName())
- .newStatus(duct.getNewStatus())
- .price(duct.getPrice())
- .promotionType(duct.getPromotionType())
- .recommandStatus(duct.getRecommandStatus())
- .sale(duct.getSale())
- .sort(duct.getSort())
- .stock(duct.getStock())
- .subTitle(duct.getSubTitle())
- .productSn(duct.getProductSn())
- .build();
- }
-
- }
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