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  • ElasticSearch 条件,分页,排序,多条件查询Demo

    原文:

    java1234,峰哥

    1. 获取客户端连接demo

    import org.elasticsearch.client.transport.TransportClient;
    import org.elasticsearch.common.settings.Settings;
    import org.elasticsearch.common.transport.InetSocketTransportAddress;
    import org.elasticsearch.transport.client.PreBuiltTransportClient;
    import org.junit.After;
    import org.junit.Before;
    
    import java.net.InetAddress;
    import java.net.UnknownHostException;
    
    /**
     * @author XXL
     * @create 2019-08-11 11:00
     */
    public class ClientDemo {
    
        protected TransportClient client = null;
    
        @Before
        public void setUp() throws UnknownHostException {
            Settings settings = Settings.builder()
                    .put("cluster.name", "my-application")
                    .build();
    
            client = new PreBuiltTransportClient(settings)
                    .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("公网ip"),9300));
    
            System.out.println("链接成功");
        }
    
        @After
        public void close(){
            if(client != null){
                client.close();
            }
        }
    
    }

    2. demo示例:

    import com.google.gson.JsonArray;
    import com.google.gson.JsonObject;
    import org.elasticsearch.action.index.IndexResponse;
    import org.elasticsearch.action.search.SearchRequestBuilder;
    import org.elasticsearch.action.search.SearchResponse;
    import org.elasticsearch.common.xcontent.XContentType;
    import org.elasticsearch.index.query.QueryBuilders;
    import org.elasticsearch.search.SearchHit;
    import org.elasticsearch.search.SearchHits;
    import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
    import org.elasticsearch.search.sort.SortOrder;
    import org.junit.Test;
    
    /**
     * @author XXL
     * @create 2019-08-11 11:08
     */
    public class SearchDemo extends ClientDemo {
    
        /**
         * 添加文档
         */
        @Test
        public void testIndex(){
            JsonArray jsonArray = new JsonArray();
    
            JsonObject jsonObject=new JsonObject();
            jsonObject.addProperty("title", "前任3:再见前任");
            jsonObject.addProperty("publishDate", "2017-12-29");
            jsonObject.addProperty("content", "一对好基友孟云(韩庚 饰)和余飞(郑恺 饰)跟女友都因为一点小事宣告分手,并且“拒绝挽回,死不认错”。两人在夜店、派对与交友软件上放飞人生第二春,大肆庆祝“黄金单身期”,从而引发了一系列好笑的故事。孟云与女友同甘共苦却难逃“五年之痒”,余飞与女友则棋逢敌手相爱相杀无绝期。然而现实的“打脸”却来得猝不及防:一对推拉纠结零往来,一对纠缠互怼全交代。两对恋人都将面对最终的选择:是再次相见?还是再也不见?");
            jsonObject.addProperty("director", "田羽生");
            jsonObject.addProperty("price", "35");
            jsonArray.add(jsonObject);
    
            JsonObject jsonObject2=new JsonObject();
            jsonObject2.addProperty("title", "机器之血");
            jsonObject2.addProperty("publishDate", "2017-12-29");
            jsonObject2.addProperty("content", "2007年,Dr.James在半岛军火商的支持下研究生化人。研究过程中,生化人安德烈发生基因突变大开杀戒,将半岛军火商杀害,并控制其组织,接管生化人的研究。Dr.James侥幸逃生,只好寻求警方的保护。特工林东(成龙 饰)不得以离开生命垂危的小女儿西西,接受证人保护任务...十三年后,一本科幻小说《机器之血》的出版引出了黑衣生化人组织,神秘骇客李森(罗志祥 饰)(被杀害的半岛军火商的儿子),以及隐姓埋名的林东,三股力量都开始接近一个“普通”女孩Nancy(欧阳娜娜 饰)的生活,想要得到她身上的秘密。而黑衣人幕后受伤隐藏多年的安德烈也再次出手,在多次缠斗之后终于抓走Nancy。林东和李森,不得不以身犯险一同前去解救,关键时刻却发现李森竟然是被杀害的半岛军火商的儿子,生化人的实验记录也落入了李森之手......");
            jsonObject2.addProperty("director", "张立嘉");
            jsonObject2.addProperty("price", "45");
            jsonArray.add(jsonObject2);
    
            JsonObject jsonObject3=new JsonObject();
            jsonObject3.addProperty("title", "星球大战8:最后的绝地武士");
            jsonObject3.addProperty("publishDate", "2018-01-05");
            jsonObject3.addProperty("content", "《星球大战:最后的绝地武士》承接前作《星球大战:原力觉醒》的剧情,讲述第一军团全面侵袭之下,蕾伊(黛西·雷德利 Daisy Ridley 饰)、芬恩(约翰·博耶加 John Boyega 饰)、波·达默龙(奥斯卡·伊萨克 Oscar Isaac 饰)三位年轻主角各自的抉 择和冒险故事。前作中觉醒强大原力的蕾伊独自寻访隐居的绝地大师卢克·天行者(马克·哈米尔 Mark Hamill 饰),在后者的指导下接受原力训练。芬恩接受了一项几乎不可能完成的任务,为此他不得不勇闯敌营,面对自己的过去。波·达默龙则要适应从战士向领袖的角色转换,这一过程中他也将接受一些血的教训。");
            jsonObject3.addProperty("director", "莱恩·约翰逊");
            jsonObject3.addProperty("price", "55");
            jsonArray.add(jsonObject3);
    
            JsonObject jsonObject4=new JsonObject();
            jsonObject4.addProperty("title", "羞羞的铁拳");
            jsonObject4.addProperty("publishDate", "2017-12-29");
            jsonObject4.addProperty("content", "靠打假拳混日子的艾迪生(艾伦 饰),本来和正义感十足的体育记者马小(马丽 饰)是一对冤家,没想到因为一场意外的电击,男女身体互换。性别错乱后,两人互坑互害,引发了拳坛的大地震,也揭开了假拳界的秘密,惹来一堆麻烦,最终两人在“卷莲门”副掌门张茱萸(沈腾 饰)的指点下,向恶势力挥起了羞羞的铁拳。");
            jsonObject4.addProperty("director", "宋阳 / 张吃鱼");
            jsonObject4.addProperty("price", "35");
            jsonArray.add(jsonObject4);
    
            JsonObject jsonObject5=new JsonObject();
            jsonObject5.addProperty("title", "战狼2");
            jsonObject5.addProperty("publishDate", "2017-07-27");
            jsonObject5.addProperty("content", "故事发生在非洲附近的大海上,主人公冷锋(吴京 饰)遭遇人生滑铁卢,被“开除军籍”,本想漂泊一生的他,正当他打算这么做的时候,一场突如其来的意外打破了他的计划,突然被卷入了一场非洲国家叛乱,本可以安全撤离,却因无法忘记曾经为军人的使命,孤身犯险冲回沦陷区,带领身陷屠杀中的同胞和难民,展开生死逃亡。随着斗争的持续,体内的狼性逐渐复苏,最终孤身闯入战乱区域,为同胞而战斗。");
            jsonObject5.addProperty("director", "吴京");
            jsonObject5.addProperty("price", "38");
            jsonArray.add(jsonObject5);
    
            for(int i = 0; i < jsonArray.size(); i ++){
                JsonObject jo = jsonArray.get(i).getAsJsonObject();
                IndexResponse response = client.prepareIndex("firm", "dongzuo")
                        .setSource(jo.toString(), XContentType.JSON).get();
                System.out.println("索引名称:"+response.getIndex());
                System.out.println("类型:"+response.getType());
                System.out.println("文档ID:"+response.getId());
                System.out.println("当前实例状态:"+response.status());
            }
        }
    
        /**
         * 查询所有
         */
        @Test
        public void getAll(){
            SearchResponse searchResponse = client.prepareSearch("firm").setTypes("dongzuo")
                    .setQuery(QueryBuilders.matchAllQuery()).execute().actionGet();
            SearchHits hits = searchResponse.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
            }
        }
    
        /**
         * 分页查询
         */
        @Test
        public void page(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
            SearchResponse response = srb.setQuery(QueryBuilders.matchAllQuery())
                    .setFrom(0)
                    .setSize(2)
                    .execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
            }
        }
    
        /**
         * 排序查询
         */
        @Test
        public void sort(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
            SearchResponse response = srb.setQuery(QueryBuilders.matchAllQuery())
                    .addSort("publishDate", SortOrder.DESC)
                    .execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
            }
        }
    
        /**
         * 数据过滤
         */
        @Test
        public void include(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
            SearchResponse response = srb.setQuery(QueryBuilders.matchAllQuery())
                    .setFetchSource(new String[]{"title", "price"}, null)
                    .execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
            }
        }
    
        /**
         * 简单条件查询
         * eg: 查询title中 包含 "战" 的
         */
        @Test
        public void condition(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
            SearchResponse response = srb.setQuery(QueryBuilders.matchQuery("title", "战"))
                    .execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
            }
        }
    
        /**
         * 条件查询 + 高亮
         */
        @Test
        public void highLight(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
    
            HighlightBuilder highlightBuilder = new HighlightBuilder();
            highlightBuilder.preTags("<h1><strong>");
            highlightBuilder.postTags("</strong><h1>");
            highlightBuilder.field("title");
    
            SearchResponse response = srb.setQuery(QueryBuilders.matchAllQuery())
                    .setQuery(QueryBuilders.matchQuery("title", "战"))
                    .setFetchSource(new String[]{"title", "price"}, null)
                    .highlighter(highlightBuilder)
                    .execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
                System.out.println(hit.getHighlightFields());
            }
        }
    
    
    }

    3.多条件查询,实战中主要用这个

    import org.elasticsearch.action.search.SearchRequestBuilder;
    import org.elasticsearch.action.search.SearchResponse;
    import org.elasticsearch.index.query.*;
    import org.elasticsearch.search.SearchHit;
    import org.elasticsearch.search.SearchHits;
    import org.junit.Test;
    
    /**
     * 多条件查询,实战中,主要是使用这个
     * @author XXL
     * @create 2019-08-11 14:11
     */
    public class MutilSearchDemo extends ClientDemo{
    
        /**
         * 模糊查找标题含有 “战”的,内容中必须没有“星球”的
         *
         */
        @Test
        public void searchMutil1(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
            QueryBuilder qb1 = QueryBuilders.matchPhraseQuery("title", "战");
            QueryBuilder qb2 = QueryBuilders.matchQuery("content","星球");
            SearchResponse response = srb.setQuery(
                    QueryBuilders.boolQuery().must(qb1).mustNot(qb2)
            ).execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit : hits){
                System.out.println(hit.getSourceAsString());
            }
    
        }
    
    
        /**
         * should 的使用 , 提高得分
         * 标题含有战的
         * 得分:1.含有星球的得分 2. 出版日期在指定区间范围的得分
         */
        @Test
        public void shouldSearch(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
    
            MatchPhraseQueryBuilder mqb = QueryBuilders.matchPhraseQuery("title", "战");
            MatchPhraseQueryBuilder mqb2 = QueryBuilders.matchPhraseQuery("content", "星球");
            RangeQueryBuilder range = QueryBuilders.rangeQuery("publishDate").gt("2018-01-01");
    
            SearchResponse response = srb.setQuery(
                    QueryBuilders.boolQuery().must(mqb).should(mqb2).should(range)
            ).execute().actionGet();
    
            SearchHits hits = response.getHits();
            for(SearchHit hit:hits){
                System.out.println(hit.getScore() + ":" +hit.getSourceAsString());
            }
        }
    
        /**
         * 标题含有战的
         * 过滤: 票价必须小于40的
         *
         */
        @Test
        public void filterSearch(){
            SearchRequestBuilder srb = client.prepareSearch("firm").setTypes("dongzuo");
    
            MatchPhraseQueryBuilder q1 = QueryBuilders.matchPhraseQuery("title", "战");
            RangeQueryBuilder priceRange = QueryBuilders.rangeQuery("price").lt(40);
    
            SearchResponse response = srb.setQuery(
                    QueryBuilders.boolQuery().must(q1).filter(priceRange)
            ).execute().actionGet();
            SearchHits hits = response.getHits();
            for(SearchHit hit: hits){
                System.out.println(hit.getSourceAsString());
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/Uzai/p/11335002.html
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