本文主要講解mall整合Elasticsearch的過程,以實現商品信息在Elasticsearch中的導入、查詢、修改、刪除爲例。java
Elasticsearch 是一個分佈式、可擴展、實時的搜索與數據分析引擎。 它能從項目一開始就賦予你的數據以搜索、分析和探索的能力,可用於實現全文搜索和實時數據統計。node
1.下載Elasticsearch6.2.2的zip包,並解壓到指定目錄,下載地址:https://www.elastic.co/cn/downloads/past-releases/elasticsearch-6-2-2mysql
2.安裝中文分詞插件,在elasticsearch-6.2.2\bin目錄下執行如下命令:elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.2/elasticsearch-analysis-ik-6.2.2.zipgit
3.運行bin目錄下的elasticsearch.bat啓動Elasticsearchgithub
4.下載Kibana,做爲訪問Elasticsearch的客戶端,請下載6.2.2版本的zip包,並解壓到指定目錄,下載地址:https://artifacts.elastic.co/downloads/kibana/kibana-6.2.2-windows-x86_64.zipweb
5.運行bin目錄下的kibana.bat,啓動Kibana的用戶界面spring
6.訪問http://localhost:5601 便可打開Kibana的用戶界面sql
Spring Data Elasticsearch是Spring提供的一種以Spring Data風格來操做數據存儲的方式,它能夠避免編寫大量的樣板代碼。數據庫
//標示映射到Elasticsearch文檔上的領域對象
windows
public @interface Document {
//索引庫名次,mysql中數據庫的概念
String indexName();
//文檔類型,mysql中表的概念
String type() default "";
//默認分片數
short shards() default 5;
//默認副本數量
short replicas() default 1;
}
//表示是文檔的id,文檔能夠認爲是mysql中表行的概念public @interface Id {}
public @interface Field { //文檔中字段的類型 FieldType type() default FieldType.Auto; //是否創建倒排索引 boolean index() default true; //是否進行存儲 boolean store() default false; //分詞器名次 String analyzer() default "";}
//爲文檔自動指定元數據類型public enum FieldType { Text,//會進行分詞並建了索引的字符類型 Integer, Long, Date, Float, Double, Boolean, Object, Auto,//自動判斷字段類型 Nested,//嵌套對象類型 Ip, Attachment, Keyword//不會進行分詞創建索引的類型}
在接口中直接指定查詢方法名稱即可查詢,無需進行實現,如商品表中有商品名稱、標題和關鍵字,直接定義如下查詢,就能夠對這三個字段進行全文搜索。
/** * 搜索查詢 * * @param name 商品名稱 * @param subTitle 商品標題 * @param keywords 商品關鍵字 * @param page 分頁信息 * @return */ Page<EsProduct> findByNameOrSubTitleOrKeywords(String name, String subTitle, String keywords, Pageable page);
在idea中直接會提示對應字段
@Query("{"bool" : {"must" : {"field" : {"name" : "?0"}}}}")Page<EsProduct> findByName(String name,Pageable pageable);
pms_product
:商品信息表
pms_product_attribute
:商品屬性參數表
pms_product_attribute_value
:存儲產品參數值的表
<!--Elasticsearch相關依賴--><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch<artifactId></dependency>
修改application.yml文件,在spring節點下添加Elasticsearch相關配置。
data: elasticsearch: repositories: enabled: true cluster-nodes: 127.0.0.1:9300 # es的鏈接地址及端口號 cluster-name: elasticsearch # es集羣的名稱
不須要中文分詞的字段設置成@Field(type = FieldType.Keyword)類型,須要中文分詞的設置成@Field(analyzer = "ikmaxword",type = FieldType.Text)類型。
package com.macro.mall.tiny.nosql.elasticsearch.document;
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
* Created by macro on 2018/6/19.
*/
@Document(indexName = "pms", type = "product",shards = 1,replicas = 0)
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;
//省略了全部getter和setter方法
}
繼承ElasticsearchRepository接口,這樣就擁有了一些基本的Elasticsearch數據操做方法,同時定義了一個衍生查詢方法。
package com.macro.mall.tiny.nosql.elasticsearch.repository;
import com.macro.mall.tiny.nosql.elasticsearch.document.EsProduct;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
/**
* 商品ES操做類
* Created by macro on 2018/6/19.
*/
public interface EsProductRepository extends ElasticsearchRepository<EsProduct, Long> {
/**
* 搜索查詢
*
* @param name 商品名稱
* @param subTitle 商品標題
* @param keywords 商品關鍵字
* @param page 分頁信息
* @return
*/
Page<EsProduct> findByNameOrSubTitleOrKeywords(String name, String subTitle, String keywords, Pageable page);
}
package com.macro.mall.tiny.service;
import com.macro.mall.tiny.nosql.elasticsearch.document.EsProduct;
import org.springframework.data.domain.Page;
import java.util.List;
/**
* 商品搜索管理Service
* Created by macro on 2018/6/19.
*/
public interface EsProductService {
/**
* 從數據庫中導入全部商品到ES
*/
int importAll();
/**
* 根據id刪除商品
*/
void delete(Long id);
/**
* 根據id建立商品
*/
EsProduct create(Long id);
/**
* 批量刪除商品
*/
void delete(List<Long> ids);
/**
* 根據關鍵字搜索名稱或者副標題
*/
Page<EsProduct> search(String keyword, Integer pageNum, Integer pageSize);
}
package com.macro.mall.tiny.service.impl;
import com.macro.mall.tiny.dao.EsProductDao;
import com.macro.mall.tiny.nosql.elasticsearch.document.EsProduct;
import com.macro.mall.tiny.nosql.elasticsearch.repository.EsProductRepository;
import com.macro.mall.tiny.service.EsProductService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* 商品搜索管理Service實現類
* Created by macro on 2018/6/19.
*/
@Service
public class EsProductServiceImpl implements EsProductService {
private static final Logger LOGGER = LoggerFactory.getLogger(EsProductServiceImpl.class);
@Autowired
private EsProductDao productDao;
@Autowired
private EsProductRepository productRepository;
@Override
public int importAll() {
List<EsProduct> esProductList = productDao.getAllEsProductList(null);
Iterable<EsProduct> esProductIterable = productRepository.saveAll(esProductList);
Iterator<EsProduct> iterator = esProductIterable.iterator();
int result = 0;
while (iterator.hasNext()) {
result++;
iterator.next();
}
return result;
}
@Override
public void delete(Long id) {
productRepository.deleteById(id);
}
@Override
public EsProduct create(Long id) {
EsProduct result = null;
List<EsProduct> esProductList = productDao.getAllEsProductList(id);
if (esProductList.size() > 0) {
EsProduct esProduct = esProductList.get(0);
result = productRepository.save(esProduct);
}
return result;
}
@Override
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);
}
}
@Override
public Page<EsProduct> search(String keyword, Integer pageNum, Integer pageSize) {
Pageable pageable = PageRequest.of(pageNum, pageSize);
return productRepository.findByNameOrSubTitleOrKeywords(keyword, keyword, keyword, pageable);
}
}
package com.macro.mall.tiny.controller;
import com.macro.mall.tiny.common.api.CommonPage;
import com.macro.mall.tiny.common.api.CommonResult;
import com.macro.mall.tiny.nosql.elasticsearch.document.EsProduct;
import com.macro.mall.tiny.service.EsProductService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.util.List;
/**
* 搜索商品管理Controller
* Created by macro on 2018/6/19.
*/
@Controller
@Api(tags = "EsProductController", description = "搜索商品管理")
@RequestMapping("/esProduct")
public class EsProductController {
@Autowired
private EsProductService esProductService;
@ApiOperation(value = "導入全部數據庫中商品到ES")
@RequestMapping(value = "/importAll", method = RequestMethod.POST)
@ResponseBody
public CommonResult<Integer> importAllList() {
int count = esProductService.importAll();
return CommonResult.success(count);
}
@ApiOperation(value = "根據id刪除商品")
@RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
@ResponseBody
public CommonResult<Object> delete(@PathVariable Long id) {
esProductService.delete(id);
return CommonResult.success(null);
}
@ApiOperation(value = "根據id批量刪除商品")
@RequestMapping(value = "/delete/batch", method = RequestMethod.POST)
@ResponseBody
public CommonResult<Object> delete(@RequestParam("ids") List<Long> ids) {
esProductService.delete(ids);
return CommonResult.success(null);
}
@ApiOperation(value = "根據id建立商品")
@RequestMapping(value = "/create/{id}", method = RequestMethod.POST)
@ResponseBody
public CommonResult<EsProduct> create(@PathVariable Long id) {
EsProduct esProduct = esProductService.create(id);
if (esProduct != null) {
return CommonResult.success(esProduct);
} else {
return CommonResult.failed();
}
}
@ApiOperation(value = "簡單搜索")
@RequestMapping(value = "/search/simple", method = RequestMethod.GET)
@ResponseBody
public CommonResult<CommonPage<EsProduct>> search(@RequestParam(required = false) String keyword,
@RequestParam(required = false, defaultValue = "0") Integer pageNum,
@RequestParam(required = false, defaultValue = "5") Integer pageSize) {
Page<EsProduct> esProductPage = esProductService.search(keyword, pageNum, pageSize);
return CommonResult.success(CommonPage.restPage(esProductPage));
}
}