Elasticsearch：广告置顶-蒲公英云

Elasticsearch：广告置顶

import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
@Configuration
public class ElasticsearchConfig {
    @Bean
    public RestHighLevelClient restHighLevelClient(){
        return new RestHighLevelClient(RestClient.builder(
                HttpHost.create("http://192.168.150.101:9200")
        ));
    }
}
@Data
public class Demo {
    // ture表示有广告，则进行加分
    private Boolean isAD;
}
import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
@Slf4j
@Service
public class DemoService extends ServiceImpl<DemoMapper, Demo> implements IDemoService {
    @Autowired
    private RestHighLevelClient restHighLevelClient;
    @Override
    public PageResult search(RequestParams params) {
        try {
            // 1.准备Request
            SearchRequest request = new SearchRequest("demo");
            // 2.准备请求参数
            // 2.1.分页
            int page = params.getPage();
            int size = params.getSize();
            request.source().from((page - 1) * size).size(size);
            // 2.2.算分函数查询
            FunctionScoreQueryBuilder functionScoreQuery = QueryBuilders.functionScoreQuery(
                boolQuery, // 原始查询，boolQuery
                new FunctionScoreQueryBuilder.FilterFunctionBuilder[]{ // function数组
                    new FunctionScoreQueryBuilder.FilterFunctionBuilder(
                        QueryBuilders.termQuery("isAD", true), // 过滤条件
                        ScoreFunctionBuilders.weightFactorFunction(10) // 算分函数
                    )
                }
            );
            // 2.3.设置查询条件
            request.source().query(functionScoreQuery);
            // 3.发送请求
            SearchResponse response = restHighLevelClient.search(request, RequestOptions.DEFAULT);
            // 4.解析响应
            return handleResponse(response);
        } catch (IOException e) {
            throw new RuntimeException("搜索数据失败", e);
        }
    }
    private PageResult handleResponse(SearchResponse response) {
        SearchHits searchHits = response.getHits();
        // 4.1.总条数
        long total = searchHits.getTotalHits().value;
        // 4.2.获取文档数组
        SearchHit[] hits = searchHits.getHits();
        // 4.3.遍历
        List<Demo> demoList = new ArrayList<>(hits.length);
        for (SearchHit hit : hits) {
            // 4.4.获取source
            String json = hit.getSourceAsString();
            // 4.5.反序列化，非高亮的
            Demo demo= JSON.parseObject(json, Demo.class);
            // 4.9.放入集合
            demoList.add(demo);
        }
        return new PageResult(total, hotels);
    }
}