一、检索服务
1、检索业务分析
商品检索三个入口
（1）选择分类进入商品检索
（2）输入检索关键字展示检索页
（3）选择筛选条件进入
2、搭建页面环境
请先参考文章 谷粒商城分布式高级（一）—— 环境搭建（高级篇补充）（ElasticSearch & nginx） 中的 “3、搭建域名访问环境（反向代理配置 & 负载均衡到网关）”
（1）gulimall-search 导入thymeleaf依赖、热部署依赖devtools使页面实时生效
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<!--模板引擎：thymeleaf-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
（2）html\搜索页\index.htmk 放到gulimall-search下的templates文件夹，并且修改html命名空间 xmlns:th="http://www.thymeleaf.org"
（3）上传文件到nginx，实现动静分离
（a）虚拟机 /mydata/nginx/html/static 新建 search 文件夹
（b）将以下静态资源上传到 /mydata/nginx/html/static/search 文件夹
（4）配置域名转发
（a）修改 Windows 的 hosts文件，映射 search.gulimall.com 到 192.168.56.10（虚拟机地址）
打开 SwitchHosts 操作即可
（b）修改nginx配置 /mydata/nginx/conf/conf.d/gulimall.conf
保存重启nginx容器
（5）修改网关配置 实现 负载均衡到网关
（a）配置gulimall-gateway（网关服务），将域名为**.gulimall.com 的 “**.”去掉，并新增配置：将域名为search.gulimall.com转发至search服务
（6）重启网关，启动gulimall-search、gulimall.gateway
访问：http://search.gulimall.com
3、调整页面跳转
（1）修改配置文件 application.properties
（2）修改实现：点击分类跳转搜索页面
（a）修改nginx中的文件 /mydata/nginx/html/static/index/js/catalogLoader.js
（b）修改gulimall-product的 templates/index.html 名称为 templates/index.html
（c）新建文件 com.atguigu.gulimall.search.controller.SearchController
package com.atguigu.gulimall.search.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
@Controller
public class SearchController {
@GetMapping("/list.html")
public String listPage(){
return "list";
}
}
（d）测试点击分类跳转搜索页面
（3）修改实现：输入文字，点击搜索框跳转搜索页面
（a）修改 gulimall-product 的 templates\index.html
（b）测试效果
4、检索查询参数 / 返回结果 模型分析抽取
商城检索条件分析。然后把前端传来的所有可能的查询条件的数据封装在一个vo中，利用springmvc自动把前端传来的数据封装为一个对象进行接收，相当的方便
（1）新建文件 SearchParam 抽取查询参数
package com.atguigu.gulimall.search.vo;
import lombok.Data;
import java.util.List;
/**
* 封装页面所有可能传递过来的关键字
* keyword=小米&sort=saleCount_desc/asc&hasStock=0/1&skuPrice=400_1900&brandId=1 &catalogId=1&attrs=1_3G:4G:5G&attrs=2_骁龙 845&attrs=4_高清屏
*/
@Data
public class SearchParam {
/**
* 页面传递过来的全文匹配关键字
*/
private String keyword;
/**
* 品牌id,可以多选
*/
private List<Long> brandId;
/**
* 三级分类id
*/
private Long catalog3Id;
/**
* 排序条件：sort=price/salecount/hotscore_desc/asc
*/
private String sort;
/**
* 是否显示有货
*/
private Integer hasStock;
/**
* 价格区间查询
*/
private String skuPrice;
/**
* 按照属性进行筛选
*/
private List<String> attrs;
/**
* 页码
*/
private Integer pageNum = 1;
/**
* 原生的所有查询条件
*/
private String _queryString;
}
（2）新建文件 SearchResult 抽取返回结果
商城检索返回的数据分析，把查询到的数据封装在一个vo中，返回给前端
package com.atguigu.gulimall.search.vo;
import com.atguigu.common.to.es.SkuEsModel;
import lombok.Data;
import java.util.List;
@Data
public class SearchResult {
/**
* 查询到的所有商品信息
*/
private List<SkuEsModel> product;
/**
* 当前页码
*/
private Integer pageNum;
/**
* 总记录数
*/
private Long total;
/**
* 总页码
*/
private Integer totalPages;
private List<Integer> pageNavs;
/**
* 当前查询到的结果，所有涉及到的品牌
*/
private List<BrandVo> brands;
/**
* 当前查询到的结果，所有涉及到的所有属性
*/
private List<AttrVo> attrs;
/**
* 当前查询到的结果，所有涉及到的所有分类
*/
private List<CatalogVo> catalogs;
//===========================以上是返回给页面的所有信息============================//
/* 面包屑导航数据 */
private List<NavVo> navs;
@Data
public static class NavVo {
private String navName;
private String navValue;
private String link;
}
@Data
public static class BrandVo {
private Long brandId;
private String brandName;
private String brandImg;
}
@Data
public static class AttrVo {
private Long attrId;
private String attrName;
private List<String> attrValue;
}
@Data
public static class CatalogVo {
private Long catalogId;
private String catalogName;
}
}
（3）修改com.atguigu.gulimall.search.controller.SearchController 的 listPage 方法
package com.atguigu.gulimall.search.controller;
import com.atguigu.gulimall.search.service.MallSearchService;
import com.atguigu.gulimall.search.vo.SearchParam;
import com.atguigu.gulimall.search.vo.SearchResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
@Controller
public class SearchController {
@Autowired
MallSearchService mallSearchService;
/**
* 自动将页面提交过来的所有请求查询参数封装成指定的对象
* @param param
* @return
*/
@GetMapping("/list.html")
public String listPage(SearchParam param, Model model){
//1、根据传递过来的页面的查询参数，去es中检索商品
SearchResult result = mallSearchService.search(param);
model.addAttribute("result",result);
return "list";
}
}
（4）新增实现类和方法 search
package com.atguigu.gulimall.search.service.impl;
import com.atguigu.gulimall.search.service.MallSearchService;
import com.atguigu.gulimall.search.vo.SearchParam;
import com.atguigu.gulimall.search.vo.SearchResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
@Slf4j
@Service
public class MallSearchServiceImpl implements MallSearchService {
/**
* 检索
* @param param：检索的所有参数
* @return
*/
@Override
public SearchResult search(SearchParam param) {
return null;
}
}
5、检索DSL测试—查询部分
先在kibanna中用es的DSL测试
（1）search.gmall.com/list.html?keyword=华为
全文匹配用 must 里的 match
GET product/_search { "query": { "bool": { "must": [ { "match": { "skuTitle": "华为" } } ] } } }
（2）search.gmall.com/list.html?keyword=华为&catalogId=225
分类、属性、价格这些不需要参与评分的写在filter里。（也可以在must里match后面接着term，但是既然不需要评分，就可以写在filter中）
GET product/_search { "query": { "bool": { "must": [ { "match": { "skuTitle": "华为" } } ], "filter": [ { "term": { "catalogId":"225" } } ] } } }
（3）search.gmall.com/list.html?keyword=华为&catalogId=225&brandId=1&brandId=2&brandId=9
brandId是个数组，一个属性、多个值，用terms
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
}
]
}
}
}
（4）search.gmall.com/list.html?keyword=华为&catalogId=225&brandId=1&brandId=2&brandId=9&attrs=1_5.56&attrs=2_白色:蓝色
attrs是nested的(嵌入式的)，查询的时候要用嵌入式的查询语句
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "15"
}
}
},
{
"terms": {
"attrs.attrValue": [
"海思（Hisilicon）",
"以官网信息为准"
]
}
}
]
}
}
}
}
]
}
}
}
（5）search.gmall.com/list.html?keyword=华为&catalogId=225&brandId=1&brandId=2&brandId=9&attrs=1_5.56&attrs=2_白色:蓝色&hasStock=true
有无库存继续 term
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "15"
}
}
},
{
"terms": {
"attrs.attrValue": [
"海思（Hisilicon）",
"以官网信息为准"
]
}
}
]
}
}
}
},
{
"term": {
"hasStock": {
"value": "false"
}
}
}
]
}
}
}
（6）search.gmall.com/list.html?keyword=华为&catalogId=225&brandId=1&brandId=2&brandId=9&attrs=1_5.56&attrs=2_白色:蓝色&hasStock=true&skuPrice=_6000 按价格区间检索用range
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "15"
}
}
},
{
"terms": {
"attrs.attrValue": [
"海思（Hisilicon）",
"以官网信息为准"
]
}
}
]
}
}
}
},
{
"term": {
"hasStock": {
"value": "false"
}
}
},
{
"range": {
"skuPrice": {
"gte": 0,
"lte": 6000
}
}
}
]
}
}
}
（7）search.gmall.com/list.html?keyword=华为&catalogId=225&brandId=1&brandId=2&brandId=9&attrs=1_5.56&attrs=2_白色:蓝色&hasStock=true&skuPrice=_6000&sort=skuPrice_desc 排序是与查询并列的，在query后面写sort
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "15"
}
}
},
{
"terms": {
"attrs.attrValue": [
"海思（Hisilicon）",
"以官网信息为准"
]
}
}
]
}
}
}
},
{
"term": {
"hasStock": {
"value": "false"
}
}
},
{
"range": {
"skuPrice": {
"gte": 0,
"lte": 6000
}
}
}
]
}
},
"sort": [
{
"skuPrice": {
"order": "desc"
}
}
]
}
（8）search.gmall.com/list.html?keyword=华为&catalogId=225&brandId=1&brandId=2&brandId=9&attrs=1_5.56&attrs=2_白色:蓝色&hasStock=true&skuPrice=_6000&sort=skuPrice_desc&pageNum=4 分页用from和size，"from":x,"size":y表示从x开始查y个
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "15"
}
}
},
{
"terms": {
"attrs.attrValue": [
"海思（Hisilicon）",
"以官网信息为准"
]
}
}
]
}
}
}
},
{
"term": {
"hasStock": {
"value": "false"
}
}
},
{
"range": {
"skuPrice": {
"gte": 0,
"lte": 6000
}
}
}
]
}
},
"sort": [
{
"skuPrice": {
"order": "desc"
}
}
],
"from": 0,
"size": 5
}
（9）高亮全文查询关键词
GET product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId":"225"
}
},
{
"terms": {
"brandId": [
"1",
"2",
"9"
]
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "15"
}
}
},
{
"terms": {
"attrs.attrValue": [
"海思（Hisilicon）",
"以官网信息为准"
]
}
}
]
}
}
}
},
{
"term": {
"hasStock": {
"value": "false"
}
}
},
{
"range": {
"skuPrice": {
"gte": 0,
"lte": 6000
}
}
}
]
}
},
"sort": [
{
"skuPrice": {
"order": "desc"
}
}
],
"from": 0,
"size": 5,
"highlight": {
"fields": {
"skuTitle": {}
},
"pre_tags": "<b style='color:red'>",
"post_tags": "</b>"
}
}
6、检索DSL测试—聚合部分
聚合分析（从所有查询结果中提取出相关的属性等信息）
使用agg
我们想聚合分析得到属性名字和分类名字，应该怎么做呢？可以通过子聚合直接得到，子聚合会用到父聚合的结果再次进行聚合
要想对 brandName 进行聚合要求它的 doc_values 为 true，所以需要对索引进行修改，修改方式：1.新建一个索引 2.数据迁移
新建索引
PUT gmall_product
{
"mappings": {
"properties": {
"skuId": {
"type": "long"
},
"spuId": {
"type": "keyword"
},
"skuTitle": {
"type": "text",
"analyzer": "ik_smart"
},
"skuPrice": {
"type": "keyword"
},
"skuImg": {
"type": "keyword"
},
"saleCount": {
"type": "long"
},
"hasStock": {
"type": "boolean"
},
"hotScore": {
"type": "long"
},
"brandId": {
"type": "long"
},
"catalogId": {
"type": "long"
},
"brandName": {
"type": "keyword"
},
"brandImg": {
"type": "keyword"
},
"catalogName": {
"type": "keyword"
},
"attrs": {
"type": "nested",
"properties": {
"attrId": {
"type": "long"
},
"attrName": {
"type": "keyword"
},
"attrValue": {
"type": "keyword"
}
}
}
}
}
}
数据迁移
POST _reindex
{
"source": {
"index": "product"
},
"dest": {
"index": "gmall_product"
}
}
记得把Java中商品上架当时写的那个索引名改过来
聚合属性，与品牌、分类不同，由于属性是嵌入式的，所以聚合也得用嵌入式的
最终所有的查询语句
GET gmall_product/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"skuTitle": "华为"
}
}
],
"filter": [
{
"term": {
"catalogId": "225"
}
},
{
"terms": {
"brandId": [
"2"
]
}
},
{
"term": {
"hasStock": "false"
}
},
{
"range": {
"skuPrice": {
"gte": 1000,
"lte": 7000
}
}
},
{
"nested": {
"path": "attrs",
"query": {
"bool": {
"must": [
{
"term": {
"attrs.attrId": {
"value": "6"
}
}
}
]
}
}
}
}
]
}
},
"sort": [
{
"skuPrice": {
"order": "desc"
}
}
],
"from": 0,
"size": 5,
"highlight": {
"fields": {
"skuTitle": {}
},
"pre_tags": "<b style='color:red'>",
"post_tags": "</b>"
},
"aggs": {
"brandAgg": {
"terms": {
"field": "brandId",
"size": 10
},
"aggs": {
"brandNameAgg": {
"terms": {
"field": "brandName",
"size": 10
}
},
"brandImgAgg": {
"terms": {
"field": "brandImg",
"size": 10
}
}
}
},
"catalogAgg": {
"terms": {
"field": "catalogId",
"size": 10
},
"aggs": {
"catalogNameAgg": {
"terms": {
"field": "catalogName",
"size": 10
}
}
}
},
"attrs": {
"nested": {
"path": "attrs"
},
"aggs": {
"attrIdAgg": {
"terms": {
"field": "attrs.attrId",
"size": 10
},
"aggs": {
"attrNameAgg": {
"terms": {
"field": "attrs.attrName",
"size": 10
}
}
}
}
}
}
}
}
7、SearchRequest构建和SearchResponse分析&封装
package com.atguigu.gulimall.search.service.impl; import com.alibaba.fastjson.JSON; import com.atguigu.common.to.es.SkuEsModel; import com.atguigu.common.utils.R; import com.atguigu.gulimall.search.config.GulimallElasticSearchConfig; import com.atguigu.gulimall.search.constant.EsConstant; import com.atguigu.gulimall.search.service.MallSearchService; import com.atguigu.gulimall.search.vo.SearchParam; import com.atguigu.gulimall.search.vo.SearchResult; import lombok.extern.slf4j.Slf4j; import org.apache.commons.lang.StringUtils; import org.apache.lucene.search.join.ScoreMode; import org.elasticsearch.action.search.SearchRequest; import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.client.RestHighLevelClient; import org.elasticsearch.index.query.BoolQueryBuilder; import org.elasticsearch.index.query.NestedQueryBuilder; import org.elasticsearch.index.query.QueryBuilders; import org.elasticsearch.index.query.RangeQueryBuilder; import org.elasticsearch.search.SearchHit; import org.elasticsearch.search.SearchHits; import org.elasticsearch.search.aggregations.AggregationBuilders; import org.elasticsearch.search.aggregations.bucket.nested.NestedAggregationBuilder; import org.elasticsearch.search.aggregations.bucket.nested.ParsedNested; import org.elasticsearch.search.aggregations.bucket.terms.ParsedLongTerms; import org.elasticsearch.search.aggregations.bucket.terms.ParsedStringTerms; import org.elasticsearch.search.aggregations.bucket.terms.Terms; import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder; import org.elasticsearch.search.builder.SearchSourceBuilder; import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder; import org.elasticsearch.search.fetch.subphase.highlight.HighlightField; import org.elasticsearch.search.sort.SortOrder; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import javax.annotation.Resource; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import java.util.stream.Collectors; @Slf4j @Service public class MallSearchServiceImpl implements MallSearchService { @Resource private RestHighLevelClient esRestClient; @Override public SearchResult search(SearchParam param) { //1、动态构建出查询需要的DSL语句 SearchResult result = null; //1、准备检索请求 SearchRequest searchRequest = buildSearchRequest(param); try { //2、执行检索请求 SearchResponse response = esRestClient.search(searchRequest, GulimallElasticSearchConfig.COMMON_OPTIONS); //3、分析响应数据，封装成我们需要的格式 result = buildSearchResult(response,param); } catch (IOException e) { e.printStackTrace(); } return result; } /** * 构建结果数据 * 模糊匹配，过滤（按照属性、分类、品牌，价格区间，库存），完成排序、分页、高亮,聚合分析功能 * @param response * @return */ private SearchResult buildSearchResult(SearchResponse response,SearchParam param) { SearchResult result = new SearchResult(); //1、返回的所有查询到的商品 SearchHits hits = response.getHits(); List<SkuEsModel> esModels = new ArrayList<>(); //遍历所有商品信息 if (hits.getHits() != null && hits.getHits().length > 0) { for (SearchHit hit : hits.getHits()) { String sourceAsString = hit.getSourceAsString(); SkuEsModel esModel = JSON.parseObject(sourceAsString, SkuEsModel.class); //判断是否按关键字检索，若是就显示高亮，否则不显示 if (!StringUtils.isEmpty(param.getKeyword())) { //拿到高亮信息显示标题 HighlightField skuTitle = hit.getHighlightFields().get("skuTitle"); String skuTitleValue = skuTitle.getFragments()[0].string(); esModel.setSkuTitle(skuTitleValue); } esModels.add(esModel); } } result.setProduct(esModels); //2、当前商品涉及到的所有属性信息 List<SearchResult.AttrVo> attrVos = new ArrayList<>(); //获取属性信息的聚合 ParsedNested attrsAgg = response.getAggregations().get("attr_agg"); ParsedLongTerms attrIdAgg = attrsAgg.getAggregations().get("attr_id_agg"); for (Terms.Bucket bucket : attrIdAgg.getBuckets()) { SearchResult.AttrVo attrVo = new SearchResult.AttrVo(); //1、得到属性的id long attrId = bucket.getKeyAsNumber().longValue(); attrVo.setAttrId(attrId); //2、得到属性的名字 ParsedStringTerms attrNameAgg = bucket.getAggregations().get("attr_name_agg"); String attrName = attrNameAgg.getBuckets().get(0).getKeyAsString(); attrVo.setAttrName(attrName); //3、得到属性的所有值 ParsedStringTerms attrValueAgg = bucket.getAggregations().get("attr_value_agg"); List<String> attrValues = attrValueAgg.getBuckets().stream().map(item -> item.getKeyAsString()).collect(Collectors.toList()); attrVo.setAttrValue(attrValues); attrVos.add(attrVo); } result.setAttrs(attrVos); //3、当前商品涉及到的所有品牌信息 List<SearchResult.BrandVo> brandVos = new ArrayList<>(); //获取到品牌的聚合 ParsedLongTerms brandAgg = response.getAggregations().get("brand_agg"); for (Terms.Bucket bucket : brandAgg.getBuckets()) { SearchResult.BrandVo brandVo = new SearchResult.BrandVo(); //1、得到品牌的id long brandId = bucket.getKeyAsNumber().longValue(); brandVo.setBrandId(brandId); //2、得到品牌的名字 ParsedStringTerms brandNameAgg = bucket.getAggregations().get("brand_name_agg"); String brandName = brandNameAgg.getBuckets().get(0).getKeyAsString(); brandVo.setBrandName(brandName); //3、得到品牌的图片 ParsedStringTerms brandImgAgg = bucket.getAggregations().get("brand_img_agg"); String brandImg = brandImgAgg.getBuckets().get(0).getKeyAsString(); brandVo.setBrandImg(brandImg); brandVos.add(brandVo); } result.setBrands(brandVos); //4、当前商品涉及到的所有分类信息 //获取到分类的聚合 List<SearchResult.CatalogVo> catalogVos = new ArrayList<>(); ParsedLongTerms catalogAgg = response.getAggregations().get("catalog_agg"); for (Terms.Bucket bucket : catalogAgg.getBuckets()) { SearchResult.CatalogVo catalogVo = new SearchResult.CatalogVo(); //得到分类id String keyAsString = bucket.getKeyAsString(); catalogVo.setCatalogId(Long.parseLong(keyAsString)); //得到分类名 ParsedStringTerms catalogNameAgg = bucket.getAggregations().get("catalog_name_agg"); String catalogName = catalogNameAgg.getBuckets().get(0).getKeyAsString(); catalogVo.setCatalogName(catalogName); catalogVos.add(catalogVo); } result.setCatalogs(catalogVos); //===============以上可以从聚合信息中获取====================// //5、分页信息-页码 result.setPageNum(param.getPageNum()); //5、1分页信息、总记录数 long total = hits.getTotalHits().value; result.setTotal(total); //5、2分页信息-总页码-计算 int totalPages = (int)total % EsConstant.PRODUCT_PAGESIZE == 0 ? (int)total / EsConstant.PRODUCT_PAGESIZE : ((int)total / EsConstant.PRODUCT_PAGESIZE + 1); result.setTotalPages(totalPages); List<Integer> pageNavs = new ArrayList<>(); for (int i = 1; i <= totalPages; i++) { pageNavs.add(i); } result.setPageNavs(pageNavs); return result; } /** * 准备检索请求 * 模糊匹配，过滤（按照属性，分类，品牌，价格区间，库存），排序，分页，高亮，聚合分析 * @return */ private SearchRequest buildSearchRequest(SearchParam param) { SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder(); /** * 模糊匹配，过滤（按照属性，分类，品牌，价格区间，库存） */ //1. 构建bool-query BoolQueryBuilder boolQueryBuilder=new BoolQueryBuilder(); //1.1 bool-must if(!StringUtils.isEmpty(param.getKeyword())){ boolQueryBuilder.must(QueryBuilders.matchQuery("skuTitle",param.getKeyword())); } //1.2 bool-fiter //1.2.1 catelogId if(null != param.getCatalog3Id()){ boolQueryBuilder.filter(QueryBuilders.termQuery("catalogId",param.getCatalog3Id())); } //1.2.2 brandId if(null != param.getBrandId() && param.getBrandId().size() >0){ boolQueryBuilder.filter(QueryBuilders.termsQuery("brandId",param.getBrandId())); } //1.2.3 attrs if(param.getAttrs() != null && param.getAttrs().size() > 0){ param.getAttrs().forEach(item -> { //attrs=1_5寸:8寸&2_16G:8G BoolQueryBuilder boolQuery = QueryBuilders.boolQuery(); //attrs=1_5寸:8寸 String[] s = item.split("_"); String attrId=s[0]; String[] attrValues = s[1].split(":");//这个属性检索用的值 boolQuery.must(QueryBuilders.termQuery("attrs.attrId",attrId)); boolQuery.must(QueryBuilders.termsQuery("attrs.attrValue",attrValues)); NestedQueryBuilder nestedQueryBuilder = QueryBuilders.nestedQuery("attrs",boolQuery, ScoreMode.None); boolQueryBuilder.filter(nestedQueryBuilder); }); } //1.2.4 hasStock if(null != param.getHasStock()){ boolQueryBuilder.filter(QueryBuilders.termQuery("hasStock",param.getHasStock() == 1)); } //1.2.5 skuPrice if(!StringUtils.isEmpty(param.getSkuPrice())){ //skuPrice形式为：1_500或_500或500_ RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery("skuPrice"); String[] price = param.getSkuPrice().split("_"); if(price.length==2){ rangeQueryBuilder.gte(price[0]).lte(price[1]); }else if(price.length == 1){ if(param.getSkuPrice().startsWith("_")){ rangeQueryBuilder.lte(price[1]); } if(param.getSkuPrice().endsWith("_")){ rangeQueryBuilder.gte(price[0]); } } boolQueryBuilder.filter(rangeQueryBuilder); } //封装所有的查询条件 searchSourceBuilder.query(boolQueryBuilder); /** * 排序，分页，高亮 */ //排序 //形式为sort=hotScore_asc/desc if(!StringUtils.isEmpty(param.getSort())){ String sort = param.getSort(); String[] sortFileds = sort.split("_"); SortOrder sortOrder="asc".equalsIgnoreCase(sortFileds[1])?SortOrder.ASC:SortOrder.DESC; searchSourceBuilder.sort(sortFileds[0],sortOrder); } //分页 searchSourceBuilder.from((param.getPageNum()-1)*EsConstant.PRODUCT_PAGESIZE); searchSourceBuilder.size(EsConstant.PRODUCT_PAGESIZE); //高亮 if(!StringUtils.isEmpty(param.getKeyword())){ HighlightBuilder highlightBuilder = new HighlightBuilder(); highlightBuilder.field("skuTitle"); highlightBuilder.preTags("<b style='color:red'>"); highlightBuilder.postTags("</b>"); searchSourceBuilder.highlighter(highlightBuilder); } /** * 聚合分析 */ //1. 按照品牌进行聚合 TermsAggregationBuilder brand_agg = AggregationBuilders.terms("brand_agg"); brand_agg.field("brandId").size(50); //1.1 品牌的子聚合-品牌名聚合 brand_agg.subAggregation(AggregationBuilders.terms("brand_name_agg") .field("brandName").size(1)); //1.2 品牌的子聚合-品牌图片聚合 brand_agg.subAggregation(AggregationBuilders.terms("brand_img_agg") .field("brandImg").size(1)); searchSourceBuilder.aggregation(brand_agg); //2. 按照分类信息进行聚合 TermsAggregationBuilder catalog_agg = AggregationBuilders.terms("catalog_agg"); catalog_agg.field("catalogId").size(20); catalog_agg.subAggregation(AggregationBuilders.terms("catalog_name_agg").field("catalogName").size(1)); searchSourceBuilder.aggregation(catalog_agg); //2. 按照属性信息进行聚合 NestedAggregationBuilder attr_agg = AggregationBuilders.nested("attr_agg", "attrs"); //2.1 按照属性ID进行聚合 TermsAggregationBuilder attr_id_agg = AggregationBuilders.terms("attr_id_agg").field("attrs.attrId"); attr_agg.subAggregation(attr_id_agg); //2.1.1 在每个属性ID下，按照属性名进行聚合 attr_id_agg.subAggregation(AggregationBuilders.terms("attr_name_agg").field("attrs.attrName").size(1)); //2.1.1 在每个属性ID下，按照属性值进行聚合 attr_id_agg.subAggregation(AggregationBuilders.terms("attr_value_agg").field("attrs.attrValue").size(50)); searchSourceBuilder.aggregation(attr_agg); log.debug("构建的DSL语句 {}",searchSourceBuilder.toString()); SearchRequest searchRequest = new SearchRequest(new String[]{EsConstant.PRODUCT_INDEX},searchSourceBuilder); return searchRequest; } }
8、页面基本数据渲染
修改默认分页数据为16个
修改gulimall-search的templates/list.html，渲染搜索页面
（1）显示商品
访问：http://search.gulimall.com/list.html?catalog3Id=225
访问：http://search.gulimall.com/list.html?catalog3Id=225&keyword=华为
（2）显示品牌、分类和筛选条件
效果：
9、页面筛选条件渲染
（1）品牌筛选
筛选点击品牌
（2）分类筛选
再筛选点击分类效果
（3）属性筛选
再筛选点击属性效果
10、页面分页数据渲染
（1）搜索效果渲染
效果
（2）分页效果渲染
效果：
11、页面排序功能
（1）修改显示内容和回显内容
（2）修改原先的 replaceParamVal 为 replaceAndAddParamVal
（3）点击切换样式并且跳转指定位置
最终效果：
12、页面价格区间搜索
（1）处理搜索 searchProduct 中 keyword 多次拼接问题
效果：多次点击搜索，不会多次拼接
（2）根据价格区间搜索商品
效果：
（3）仅显示有货
效果：
13、面包屑导航
（1）引入springcloud依赖和openfeign远程依赖
（2）开启远程调用
（3）新增远程调用接口 com.atguigu.gulimall.search.feign.ProductFeignService
package com.atguigu.gulimall.search.feign;
import com.atguigu.common.utils.R;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
@FeignClient("gulimall-product")
public interface ProductFeignService {
@RequestMapping("/product/attr/info/{attrId}")
public R attrInfo(@PathVariable("attrId") Long attrId);
}
（4）新增文件 com.atguigu.gulimall.search.vo.AttrResponseVo
package com.atguigu.gulimall.search.vo;
import lombok.Data;
@Data
public class AttrResponseVo {
/**
* 属性id
*/
private Long attrId;
/**
* 属性名
*/
private String attrName;
/**
* 是否需要检索[0-不需要，1-需要]
*/
private Integer searchType;
/**
* 属性图标
*/
private String icon;
/**
* 可选值列表[用逗号分隔]
*/
private String valueSelect;
/**
* 属性类型[0-销售属性，1-基本属性，2-既是销售属性又是基本属性]
*/
private Integer attrType;
/**
* 启用状态[0 - 禁用，1 - 启用]
*/
private Long enable;
/**
* 所属分类
*/
private Long catelogId;
/**
* 快速展示【是否展示在介绍上；0-否 1-是】，在sku中仍然可以调整
*/
private Integer showDesc;
private Long attrGroupId;
private String catelogName;
private String groupName;
private Long[] catelogPath;
}
（5）修改文件 com.atguigu.gulimall.search.controller.SearchController 的 listPage 方法
/**
* 自动将页面提交过来的所有请求查询参数封装成指定的对象
* @param param
* @return
*/
@GetMapping("/list.html")
public String listPage(SearchParam param, Model model, HttpServletRequest request){
String queryString = request.getQueryString();
param.set_queryString(queryString);
//1、根据传递过来的页面的查询参数，去es中检索商品
SearchResult result = mallSearchService.search(param);
model.addAttribute("result",result);
return "list";
}
（6）修改 com.atguigu.gulimall.search.service.impl.MallSearchServiceImpl 的 buildSearchResult方法
/**
* 构建结果数据
* 模糊匹配，过滤（按照属性、分类、品牌，价格区间，库存），完成排序、分页、高亮,聚合分析功能
* @param response
* @return
*/
private SearchResult buildSearchResult(SearchResponse response,SearchParam param) {
SearchResult result = new SearchResult();
//1、返回的所有查询到的商品
SearchHits hits = response.getHits();
List<SkuEsModel> esModels = new ArrayList<>();
//遍历所有商品信息
if (hits.getHits() != null && hits.getHits().length > 0) {
for (SearchHit hit : hits.getHits()) {
String sourceAsString = hit.getSourceAsString();
SkuEsModel esModel = JSON.parseObject(sourceAsString, SkuEsModel.class);
//判断是否按关键字检索，若是就显示高亮，否则不显示
if (!StringUtils.isEmpty(param.getKeyword())) {
//拿到高亮信息显示标题
HighlightField skuTitle = hit.getHighlightFields().get("skuTitle");
String skuTitleValue = skuTitle.getFragments()[0].string();
esModel.setSkuTitle(skuTitleValue);
}
esModels.add(esModel);
}
}
result.setProduct(esModels);
//2、当前商品涉及到的所有属性信息
List<SearchResult.AttrVo> attrVos = new ArrayList<>();
//获取属性信息的聚合
ParsedNested attrsAgg = response.getAggregations().get("attr_agg");
ParsedLongTerms attrIdAgg = attrsAgg.getAggregations().get("attr_id_agg");
for (Terms.Bucket bucket : attrIdAgg.getBuckets()) {
SearchResult.AttrVo attrVo = new SearchResult.AttrVo();
//1、得到属性的id
long attrId = bucket.getKeyAsNumber().longValue();
attrVo.setAttrId(attrId);
//2、得到属性的名字
ParsedStringTerms attrNameAgg = bucket.getAggregations().get("attr_name_agg");
String attrName = attrNameAgg.getBuckets().get(0).getKeyAsString();
attrVo.setAttrName(attrName);
//3、得到属性的所有值
ParsedStringTerms attrValueAgg = bucket.getAggregations().get("attr_value_agg");
List<String> attrValues = attrValueAgg.getBuckets().stream().map(item -> item.getKeyAsString()).collect(Collectors.toList());
attrVo.setAttrValue(attrValues);
attrVos.add(attrVo);
}
result.setAttrs(attrVos);
//3、当前商品涉及到的所有品牌信息
List<SearchResult.BrandVo> brandVos = new ArrayList<>();
//获取到品牌的聚合
ParsedLongTerms brandAgg = response.getAggregations().get("brand_agg");
for (Terms.Bucket bucket : brandAgg.getBuckets()) {
SearchResult.BrandVo brandVo = new SearchResult.BrandVo();
//1、得到品牌的id
long brandId = bucket.getKeyAsNumber().longValue();
brandVo.setBrandId(brandId);
//2、得到品牌的名字
ParsedStringTerms brandNameAgg = bucket.getAggregations().get("brand_name_agg");
String brandName = brandNameAgg.getBuckets().get(0).getKeyAsString();
brandVo.setBrandName(brandName);
//3、得到品牌的图片
ParsedStringTerms brandImgAgg = bucket.getAggregations().get("brand_img_agg");
String brandImg = brandImgAgg.getBuckets().get(0).getKeyAsString();
brandVo.setBrandImg(brandImg);
brandVos.add(brandVo);
}
result.setBrands(brandVos);
//4、当前商品涉及到的所有分类信息
//获取到分类的聚合
List<SearchResult.CatalogVo> catalogVos = new ArrayList<>();
ParsedLongTerms catalogAgg = response.getAggregations().get("catalog_agg");
for (Terms.Bucket bucket : catalogAgg.getBuckets()) {
SearchResult.CatalogVo catalogVo = new SearchResult.CatalogVo();
//得到分类id
String keyAsString = bucket.getKeyAsString();
catalogVo.setCatalogId(Long.parseLong(keyAsString));
//得到分类名
ParsedStringTerms catalogNameAgg = bucket.getAggregations().get("catalog_name_agg");
String catalogName = catalogNameAgg.getBuckets().get(0).getKeyAsString();
catalogVo.setCatalogName(catalogName);
catalogVos.add(catalogVo);
}
result.setCatalogs(catalogVos);
//===============以上可以从聚合信息中获取====================//
//5、分页信息-页码
result.setPageNum(param.getPageNum());
//5、1分页信息、总记录数
long total = hits.getTotalHits().value;
result.setTotal(total);
//5、2分页信息-总页码-计算
int totalPages = (int)total % EsConstant.PRODUCT_PAGESIZE == 0 ?
(int)total / EsConstant.PRODUCT_PAGESIZE : ((int)total / EsConstant.PRODUCT_PAGESIZE + 1);
result.setTotalPages(totalPages);
List<Integer> pageNavs = new ArrayList<>();
for (int i = 1; i <= totalPages; i++) {
pageNavs.add(i);
}
result.setPageNavs(pageNavs);
//6、构建面包屑导航
if (param.getAttrs() != null && param.getAttrs().size() > 0) {
List<SearchResult.NavVo> collect = param.getAttrs().stream().map(attr -> {
//1、分析每一个attrs传过来的参数值
SearchResult.NavVo navVo = new SearchResult.NavVo();
String[] s = attr.split("_");
navVo.setNavValue(s[1]);
R r = productFeignService.attrInfo(Long.parseLong(s[0]));
if (r.getCode() == 0) {
AttrResponseVo data = r.getData("attr", new TypeReference<AttrResponseVo>() {
});
navVo.setNavName(data.getAttrName());
} else {
navVo.setNavName(s[0]);
}
//2、取消了这个面包屑以后，我们要跳转到哪个地方，将请求的地址url里面的当前置空
//拿到所有的查询条件，去掉当前
String encode = null;
try {
encode = URLEncoder.encode(attr,"UTF-8");
encode.replace("+","%20"); //浏览器对空格的编码和Java不一样，差异化处理
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
String replace = param.get_queryString().replace("&attrs=" + attr, "");
navVo.setLink("http://search.gulimall.com/list.html?" + replace);
return navVo;
}).collect(Collectors.toList());
result.setNavs(collect);
}
return result;
}
（7）修改 templates/list.html 文件
最终效果：
