如何使用es实现搜索功能2

之前1写的是es相关的设计跟dsl语法怎么写（怎么实现京东搜索页面的功能）这个是把dsl语法写成java代码

前端传来的参数映射类

public class ESRequestParam {

    
    private String keyword;

    
    private List brandId;

    
    private Long categoryId;

    
    private String sort;

    private Long salecount;//销量

    private Date putawayDate;//上架时间
    
    private Integer hasStock;

    
    private String price;

    
    private List attrs;

    
    private Integer pageNum = 1;

    
    private String queryString;

    public String getKeyword() {
        return keyword;
    }

    public void setKeyword(String keyword) {
        this.keyword = keyword;
    }

    public List getBrandId() {
        return brandId;
    }

    public void setBrandId(List brandId) {
        this.brandId = brandId;
    }

    public String getSort() {
        return sort;
    }

    public void setSort(String sort) {
        this.sort = sort;
    }

    public Integer getHasStock() {
        return hasStock;
    }

    public void setHasStock(Integer hasStock) {
        this.hasStock = hasStock;
    }

    public String getPrice() {
        return price;
    }

    public void setPrice(String price) {
        this.price = price;
    }

    public List getAttrs() {
        return attrs;
    }

    public void setAttrs(List attrs) {
        this.attrs = attrs;
    }

    public Integer getPageNum() {
        return pageNum;
    }

    public void setPageNum(Integer pageNum) {
        this.pageNum = pageNum;
    }

    public String getQueryString() {
        return queryString;
    }

    public void setQueryString(String queryString) {
        this.queryString = queryString;
    }

    public Long getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(Long categoryId) {
        this.categoryId = categoryId;
    }

    public Long getSalecount() {
        return salecount;
    }

    public void setSalecount(Long salecount) {
        this.salecount = salecount;
    }

    public Date getPutawayDate() {
        return putawayDate;
    }

    public void setPutawayDate(Date putawayDate) {
        this.putawayDate = putawayDate;
    }
}

Controller层

@RestController
public class MallSearchController {

     @Autowired
     private MallSearchService  mallSearchService;



    
    @ResponseBody
    @RequestMapping(value = "/searchList")
    public CommonResult listPage(ESRequestParam param, HttpServletRequest request) {

        //1、根据传递来的页面的查询参数，去es中检索商品
        ESResponseResult searchResult = mallSearchService.search(param);

        return CommonResult.success(searchResult);
    }


}

Service层

public interface MallSearchService {


    
    ESResponseResult search(ESRequestParam param);


}

Service实现类

@Service(value=“mallSearchService”)
public class MallSearchServiceImpl implements MallSearchService {

@Qualifier("restHighLevelClient")
@Autowired
private RestHighLevelClient client;






@Override
public ESResponseResult search(ESRequestParam param) {

    try {
        //1、构建检索对象-封装请求相关参数信息
        SearchRequest searchRequest = startBuildRequestParam(param);

        //2、进行检索 *** 作
        SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT);
        System.out.println("response:"+response);
        //3、分析响应数据，封装成指定的格式
        ESResponseResult responseResult = startBuildResponseResult(response, param);
        return responseResult;
    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;

}


private SearchRequest startBuildRequestParam(ESRequestParam param) {

    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();

    
    BoolQueryBuilder boolQueryBuilder = new BoolQueryBuilder();

    //1、查询关键字
    if (!StringUtils.isEmpty(param.getKeyword())) {
        //单字段查询
        //boolQueryBuilder.must(QueryBuilders.matchQuery("name", param.getKeyword()));
        //多字段查询
        boolQueryBuilder.must(QueryBuilders.multiMatchQuery(param.getKeyword(),"name","keywords","subTitle"));
    }

    //2、根据类目ID进行过滤
    if (null != param.getCategoryId()) {
        boolQueryBuilder.filter(QueryBuilders.termQuery("categoryId", param.getCategoryId()));
    }

    //3、根据品牌ID进行过滤
    if (null != param.getBrandId() && param.getBrandId().size() > 0) {
        boolQueryBuilder.filter(QueryBuilders.termsQuery("brandId", param.getBrandId()));
    }

    //4、根据属性进行相关过滤
    if (param.getAttrs() != null && param.getAttrs().size() > 0) {

        param.getAttrs().forEach(item -> {
            //attrs=1_白色&2_4核
            BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();

            //attrs=1_64G
            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);
        });

    }

    //5、是否有库存
    if (null != param.getHasStock()) {
        boolQueryBuilder.filter(QueryBuilders.termQuery("hasStock", param.getHasStock() == 1));
    }


    //6、根据价格过滤
    if (!StringUtils.isEmpty(param.getPrice())) {
        //价格的输入形式为：10_100（起始价格和最终价格）或_100（不指定起始价格）或10_（不限制最终价格）
        RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery("price");
        String[] price = param.getPrice().split("_");
        if (price.length == 2) {
                //price: _5000
                if (param.getPrice().startsWith("_")) {
                    rangeQueryBuilder.lte(price[1]);
                }
            else{
                    //price: 1_5000
                    rangeQueryBuilder.gte(price[0]).lte(price[1]);
            }

        } else if (price.length == 1) {
             //price: 1_
            if (param.getPrice().endsWith("_")) {
                rangeQueryBuilder.gte(price[0]);
            }
        }
        boolQueryBuilder.filter(rangeQueryBuilder);
    }

    //封装所有查询条件
    searchSourceBuilder.query(boolQueryBuilder);


    

    //排序
    //页面传入的参数值形式 sort=price_asc/desc
    if (!StringUtils.isEmpty(param.getSort())) {
        String sort = param.getSort();
        String[] sortFileds = sort.split("_");

        if(!StringUtils.isEmpty(sortFileds[0])){
            SortOrder sortOrder = "asc".equalsIgnoreCase(sortFileds[1]) ? SortOrder.ASC : SortOrder.DESC;
            searchSourceBuilder.sort(sortFileds[0], sortOrder);
        }
    }

    //分页查询
    searchSourceBuilder.from((param.getPageNum() - 1) * SearchConstant.PAGE_SIZE);
    searchSourceBuilder.size(SearchConstant.PAGE_SIZE);

    //高亮显示
    if (!StringUtils.isEmpty(param.getKeyword())) {

        HighlightBuilder highlightBuilder = new HighlightBuilder();
        highlightBuilder.field("name");
        highlightBuilder.preTags("");
        highlightBuilder.postTags("");

        searchSourceBuilder.highlighter(highlightBuilder);
    }


    
    //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 category_agg = AggregationBuilders.terms("category_agg");
    category_agg.field("categoryId").size(50);

    category_agg.subAggregation(AggregationBuilders.terms("category_name_agg").field("categoryName").size(1));

    searchSourceBuilder.aggregation(category_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);

    System.out.println("构建的DSL语句 {}:"+ searchSourceBuilder.toString());

    SearchRequest searchRequest = new SearchRequest(new String[]{SearchConstant.INDEX_NAME}, searchSourceBuilder);

    return searchRequest;
}




private ESResponseResult startBuildResponseResult(SearchResponse response, ESRequestParam param) {

   ESResponseResult result = new ESResponseResult();

    //1、获取查询到的商品信息
    SearchHits hits = response.getHits();

    List esModels = new ArrayList<>();
    //2、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();
            EsProduct esModel = JSON.parseObject(sourceAsString, EsProduct.class);

                //2.1 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())) {
                //2.2 拿到高亮信息显示标题
                HighlightField name = hit.getHighlightFields().get("name");
                //2.3 判断name中是否含有查询的关键字(因为是多字段查询，因此可能不包含指定的关键字，假设不包含则显示原始name字段的信息)
                String namevalue = name!=null ? name.getFragments()[0].string() : esModel.getName();
                esModel.setName(namevalue);
            }
            esModels.add(esModel);
        }
    }
    result.setProducts(esModels);

    //3、当前商品涉及到的所有品牌信息，小米手机和小米电脑都属于小米品牌，过滤重复品牌信息
    List brandVos = new ArrayList<>();
    //获取到品牌的聚合
    ParsedLongTerms brandAgg = response.getAggregations().get("brand_agg");
    for (Terms.Bucket bucket : brandAgg.getBuckets()) {
        ESResponseResult.BrandVo brandVo = new ESResponseResult.BrandVo();

        //获取品牌的id
        long brandId = bucket.getKeyAsNumber().longValue();
        brandVo.setBrandId(brandId);

        //获取品牌的名字
        ParsedStringTerms brandNameAgg = bucket.getAggregations().get("brand_name_agg");
        String brandName = brandNameAgg.getBuckets().get(0).getKeyAsString();
        brandVo.setBrandName(brandName);

        //获取品牌的LOGO
        ParsedStringTerms brandImgAgg = bucket.getAggregations().get("brand_img_agg");
        String brandImg = brandImgAgg.getBuckets().get(0).getKeyAsString();
        brandVo.setBrandImg(brandImg);
        System.out.println("brandId:"+brandId+"brandName:"+brandName+"brandImg");
        brandVos.add(brandVo);
    }
    System.out.println("brandVos.size:"+brandVos.size());
    result.setBrands(brandVos);


    //4、当前商品相关的所有类目信息
    //获取到分类的聚合
    List categoryVos = new ArrayList<>();

    ParsedLongTerms categoryAgg = response.getAggregations().get("category_agg");


    for (Terms.Bucket bucket : categoryAgg.getBuckets()) {
        ESResponseResult.categoryVo categoryVo = new ESResponseResult.categoryVo();
        //获取分类id
        String keyAsString = bucket.getKeyAsString();
        categoryVo.setCategoryId(Long.parseLong(keyAsString));

        //获取分类名
        ParsedStringTerms categoryNameAgg = bucket.getAggregations().get("category_name_agg");
        String categoryName = categoryNameAgg.getBuckets().get(0).getKeyAsString();
        categoryVo.setCategoryName(categoryName);
        categoryVos.add(categoryVo);
    }

    result.setCategorys(categoryVos);



    //5、获取商品相关的所有属性信息
    List 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()) {
        ESResponseResult.AttrVo attrVo = new ESResponseResult.AttrVo();
        //获取属性ID值
        long attrId = bucket.getKeyAsNumber().longValue();
        attrVo.setAttrId(attrId);

        //获取属性的名字
        ParsedStringTerms attrNameAgg = bucket.getAggregations().get("attr_name_agg");
        String attrName = attrNameAgg.getBuckets().get(0).getKeyAsString();
        attrVo.setAttrName(attrName);

        //获取属性的值
        ParsedStringTerms attrValueAgg = bucket.getAggregations().get("attr_value_agg");
        System.out.println("===1==="+attrValueAgg.getBuckets());

        for (Terms.Bucket b : attrValueAgg.getBuckets()) {
             String bb = b.getKeyAsString();
            System.out.println("bb:"+bb);
        }

        List attrValues = attrValueAgg.getBuckets().stream().map(item -> item.getKeyAsString()).collect(Collectors.toList());
        attrVo.setAttrValue(attrValues);
        System.out.println("===2==="+attrValues);
        attrVos.add(attrVo);
    }

    result.setAttrs(attrVos);

    //6、进行分页 *** 作
    result.setPageNum(param.getPageNum());
    //获取总记录数
    long total = hits.getTotalHits().value;
    result.setTotal(total);

    //计算总页码
    int totalPages = (int) total % SearchConstant.PAGE_SIZE == 0 ?
            (int) total / SearchConstant.PAGE_SIZE : ((int) total / SearchConstant.PAGE_SIZE + 1);
    result.setTotalPages(totalPages);

    List pageNavs = new ArrayList<>();
    for (int i = 1; i <= totalPages; i++) {
        pageNavs.add(i);
    }
    result.setPageNavs(pageNavs);

    return result;
    }

}

 7.6.1
  
	  org.springframework.boot
      spring-boot-starter-data-elasticsearch