lucene spatial 6.1搜索附近的饭店

1.maven用依赖如下

    <properties>        <lib.lucene.version>6.1.0</lib.lucene.version>    </properties>        <dependency>            <groupId>com.fasterxml.jackson.core</groupId>            <artifactId>jackson-databind</artifactId>            <version>2.8.1</version>        </dependency>        <dependency>            <groupId>org.apache.lucene</groupId>            <artifactId>lucene-core</artifactId>            <version>${lib.lucene.version}</version>        </dependency>        <dependency>            <groupId>org.apache.lucene</groupId>            <artifactId>lucene-analyzers-common</artifactId>            <version>${lib.lucene.version}</version>        </dependency>        <dependency>            <groupId>org.apache.lucene</groupId>            <artifactId>lucene-spatial</artifactId>            <version>${lib.lucene.version}</version>        </dependency>        <dependency>            <groupId>org.apache.lucene</groupId>            <artifactId>lucene-spatial-extras</artifactId>            <version>${lib.lucene.version}</version>        </dependency>        <dependency>            <groupId>org.apache.lucene</groupId>            <artifactId>lucene-analyzers-smartcn</artifactId>            <version>${lib.lucene.version}</version>        </dependency>

2.直接上代码

package org.xpen.hello.search.lucene;

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;

import org.apache.lucene.analysis.cn.smart.SmartChineseAnalyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.document.Field.Store;import org.apache.lucene.document.NumericDocValuesField;import org.apache.lucene.document.StoredField;import org.apache.lucene.document.TextField;import org.apache.lucene.index.DirectoryReader;import org.apache.lucene.index.IndexReader;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.index.Term;import org.apache.lucene.queries.function.ValueSource;import org.apache.lucene.search.BooleanClause;import org.apache.lucene.search.BooleanQuery;import org.apache.lucene.search.IndexSearcher;import org.apache.lucene.search.Query;import org.apache.lucene.search.Sort;import org.apache.lucene.search.TermQuery;import org.apache.lucene.search.TopDocs;import org.apache.lucene.spatial.SpatialStrategy;import org.apache.lucene.spatial.prefix.RecursivePrefixTreeStrategy;import org.apache.lucene.spatial.prefix.tree.GeohashPrefixTree;import org.apache.lucene.spatial.prefix.tree.SpatialPrefixTree;import org.apache.lucene.spatial.query.SpatialArgs;import org.apache.lucene.spatial.query.SpatialOperation;import org.apache.lucene.store.Directory;import org.apache.lucene.store.RAMDirectory;import org.junit.Test;import org.locationtech.spatial4j.context.SpatialContext;import org.locationtech.spatial4j.distance.DistanceUtils;import org.locationtech.spatial4j.shape.Point;import org.locationtech.spatial4j.shape.Shape;

import com.fasterxml.jackson.core.JsonFactory;import com.fasterxml.jackson.core.JsonParser;import com.fasterxml.jackson.databind.ObjectMapper;

/** * Lucene spatial演示 * 出处：官方junit代码 */public class SpatialExample {

    @Test    public void test() throws Exception {        init();        indexPoints();        search();    }

    /** Spatial4j上下文 */    private SpatialContext ctx;// "ctx" is the conventional variable name

    /** 提供索引和查询模型的策略接口 */    private SpatialStrategy strategy;

    /** 索引目录 */    private Directory directory;

    protected void init() {        // SpatialContext也可以通过SpatialContextFactory工厂类来构建        this.ctx = SpatialContext.GEO;

        //网格最大11层, geohash的精度        int maxLevels = 11;

        //Spatial Tiers        SpatialPrefixTree grid = new GeohashPrefixTree(ctx, maxLevels);

        this.strategy = new RecursivePrefixTreeStrategy(grid, "myGeoField");

        this.directory = new RAMDirectory();    }

    private void indexPoints() throws Exception {        IndexWriterConfig iwConfig = new IndexWriterConfig(new SmartChineseAnalyzer());        IndexWriter indexWriter = new IndexWriter(directory, iwConfig);

        JsonFactory jsonFactory = new JsonFactory();        jsonFactory.enable(JsonParser.Feature.ALLOW_COMMENTS);        ObjectMapper mapper = new ObjectMapper(jsonFactory);

        BufferedReader br = new BufferedReader(new InputStreamReader(                SpatialExample.class.getClassLoader().getResourceAsStream("search/lucene/shop.json")));

        String line = null;          while ((line = br.readLine()) != null) {            ShopBean shopBean = mapper.readValue(line, ShopBean.class);            //这里的x,y即经纬度，x为Longitude(经度),y为Latitude(纬度)              Document document = newSampleDocument(shopBean.getId(), shopBean.getName(), ctx.makePoint(shopBean.getLongitude(), shopBean.getLatitude()));            indexWriter.addDocument(document);        }  

        indexWriter.close();    }

    private Document newSampleDocument(int id, String title, Shape... shapes) {        Document doc = new Document();        doc.add(new StoredField("id", id));        doc.add(new NumericDocValuesField("id", id));        doc.add(new TextField("name", title, Store.YES));

        // Potentially more than one shape in this field is supported by some        // strategies; see the javadocs of the SpatialStrategy impl to see.        for (Shape shape : shapes) {            for (Field f : strategy.createIndexableFields(shape)) {                doc.add(f);            }            // store it too; the format is up to you            // (assume point in this example)            Point pt = (Point) shape;            doc.add(new StoredField(strategy.getFieldName(), pt.getX() + " " + pt.getY()));        }

        return doc;    }

    private void search() throws Exception {        searchInner("密室");        System.out.println("----------------");        searchInner("咖啡");    }

    private void searchInner(String keyword) throws Exception {        IndexReader indexReader = DirectoryReader.open(directory);        IndexSearcher indexSearcher = new IndexSearcher(indexReader);

        // --Filter by circle (<= distance from a point)        // Search with circle        // note: SpatialArgs can be parsed from a string        Point pt = ctx.makePoint(121.41791, 31.21867);        // the distance in km        ValueSource valueSource = strategy.makeDistanceValueSource(pt, DistanceUtils.DEG_TO_KM);        //按距离由近及远排序        Sort distSort = new Sort(valueSource.getSortField(false)).rewrite(indexSearcher); // false=asc                                                                                         dist

        SpatialArgs args = new SpatialArgs(SpatialOperation.Intersects,                ctx.makeCircle(pt, DistanceUtils.dist2Degrees(3.0, DistanceUtils.EARTH_MEAN_RADIUS_KM)));        Query query = strategy.makeQuery(args);

        BooleanQuery.Builder bqb = new BooleanQuery.Builder();        bqb.add(query, BooleanClause.Occur.MUST);        bqb.add(new TermQuery(new Term("name", keyword)), BooleanClause.Occur.MUST);

        TopDocs docs = indexSearcher.search(bqb.build(), 20, distSort);        printDocs(indexSearcher, docs, args);

        indexReader.close();    }

    private void printDocs(IndexSearcher indexSearcher, TopDocs docs, SpatialArgs args) throws IOException {        for (int i = 0; i < docs.totalHits; i++) {            Document doc = indexSearcher.doc(docs.scoreDocs[i].doc);            System.out.print(doc.getField("id").numericValue().intValue());            System.out.print(":" + doc.getField("name").stringValue());

            //计算距离            String docStr = doc.getField(strategy.getFieldName()).stringValue();            // assume docStr is "x y" as written in newSampleDocument()            int spaceIdx = docStr.indexOf(' ');            double x = Double.parseDouble(docStr.substring(0, spaceIdx));            double y = Double.parseDouble(docStr.substring(spaceIdx + 1));            double docDistDEG = ctx.calcDistance(args.getShape().getCenter(), x, y);

            System.out.print("(" + DistanceUtils.degrees2Dist(docDistDEG, DistanceUtils.EARTH_MEAN_RADIUS_KM) + "km)");

            System.out.println();        }    }

}

3.测试数据
shop.json

{"id":22130905,"name":"nook诺克密室&DIY多肉(人民广场店)","address":"浙江南路78号东新大厦216室","longitude":121.48206,"latitude":31.2288}{"id":2871847,"name":"星巴克(江苏店)","address":"江苏路458号1层116","longitude":121.43091,"latitude":31.218975}{"id":18179096,"name":"极道真人密室逃脱(人民广场大世界总店)","address":"金陵东路569号汇通大厦804室","longitude":121.48103,"latitude":31.226982}{"id":22676436,"name":"I high club","address":"上大路99号","longitude":121.39542,"latitude":31.312284}{"id":16820366,"name":"小仙屋剧情密室逃脱","address":"胶州路941号长久商务中心2203室","longitude":121.436646,"latitude":31.237585}{"id":8852374,"name":"魔方剧情真人密室逃脱(静安店)","address":"西康路618号华通大厦13楼D座","longitude":121.446335,"latitude":31.23506}{"id":24065790,"name":"A9真人密室逃脱(黄浦店)","address":"福州路465号上海书城6楼贝亦迪科技体验馆","longitude":121.48146,"latitude":31.23335}{"id":66552930,"name":"Charles' VR 虚拟现实体验馆","address":"五角场大学路161号701室","longitude":121.509865,"latitude":31.304022}{"id":8843152,"name":"iDream真人密室逃脱(百米香榭店)","address":"浙江路229号百米香榭街354店铺","longitude":121.479,"latitude":31.233591}{"id":11579304,"name":"1617Cafe(中山公园龙之梦服务区)","address":"长宁路890号玫瑰坊1楼88B","longitude":121.41786,"latitude":31.219374}{"id":19649586,"name":"MC精品真人密室逃脱(八佰伴店)","address":"浦东南路1088号4F-05","longitude":121.515366,"latitude":31.228285}{"id":66350697,"name":"初鱼vr咖-虚拟现实体验馆","address":"大学路103号802室","longitude":121.51079,"latitude":31.304335}{"id":3564328,"name":"Boom Cafe","address":"宣化路313号","longitude":121.42288,"latitude":31.216875}{"id":6850935,"name":"nook诺克密室逃脱(长宁店)","address":"中山公园附近","longitude":121.4217,"latitude":31.215496}{"id":23306435,"name":"暗黑魔盒集中营(鬼屋密室)","address":"翔殷路1099号4楼","longitude":121.51839,"latitude":31.30048}{"id":6438722,"name":"Min魔魔岛密室逃脱(中山公园店)","address":"长宁路988号花园大厦6楼606室","longitude":121.417885,"latitude":31.21871}{"id":5411446,"name":"COSTA COFFEE(上海长宁新世界)","address":"长宁路823号1楼","longitude":121.42047,"latitude":31.21866}{"id":7658577,"name":"因奥密室","address":"锦秋路699弄二区一排121号","longitude":121.38976,"latitude":31.32106}{"id":17163949,"name":"aMaze真人密室逃脱","address":"长宁路988号花园大厦903","longitude":121.41791,"latitude":31.21867}{"id":21930982,"name":"MANGOSIX(长宁龙之梦店)","address":"长宁路1018号龙之梦购物中心1楼1075号铺","longitude":121.41745,"latitude":31.21966}{"id":13915001,"name":"ZOOCOFFEE(定西路店)","address":"定西路1100号辽油大厦101室","longitude":121.42346,"latitude":31.2117}{"id":8019669,"name":"贝克街5号密室逃脱","address":"长寿路181弄日月星辰2号楼1007室","longitude":121.4421,"latitude":31.241724}{"id":67979580,"name":"Zero VR零维虚拟现实体验馆","address":"定西路1310弄18号303","longitude":121.42359,"latitude":31.215818}{"id":21374196,"name":"Dobe密室逃脱(杨浦大学路店)","address":"大学路33号701室loft37运动酒吧楼上","longitude":121.5117,"latitude":31.3047}{"id":17999648,"name":"DTR梦空间密室逃脱(八佰伴店)","address":"张杨路628弄东明广场2号楼2203室","longitude":121.52058,"latitude":31.228123}{"id":22636011,"name":"猫小姐的店","address":"长宁路890号玫瑰坊1楼","longitude":121.41781,"latitude":31.219257}{"id":23516373,"name":"Forest Rose Afternoon Tea","address":"长宁路890号玫瑰坊1F-72","longitude":121.418724,"latitude":31.21922}{"id":23550163,"name":"白兔子密室逃脱","address":"长宁路405弄1号地下1层","longitude":121.427055,"latitude":31.22307}{"id":32392280,"name":"海盗奇兵密室逃脱(五角场店)","address":"大学路33号601室loft37运动酒吧楼上","longitude":121.511765,"latitude":31.304789}{"id":56588006,"name":"第五空间咖啡馆","address":"长宁路1018号龙之梦购物中心4楼4202","longitude":121.41633,"latitude":31.218613}{"id":32508745,"name":"Vital Tea(长宁龙之梦店)","address":"长宁路1018号龙之梦购物中心1F-1055","longitude":121.41703,"latitude":31.21874}{"id":58805309,"name":"探险者世界(VR体验馆)","address":"人民广场迪美购物中心B1层","longitude":121.47345,"latitude":31.228691}{"id":57380950,"name":"阿拉丁真人密室逃脱(八佰伴店)","address":"张杨路628弄东明广场3号2C","longitude":121.52024,"latitude":31.22793}{"id":17950766,"name":"JOJO真人密室逃脱","address":"长寿路457号2楼C室","longitude":121.43657,"latitude":31.23879}{"id":57832242,"name":"Daisy花&咖啡","address":"江苏路54弄18号后门","longitude":121.42814,"latitude":31.223377}{"id":28615799,"name":"Let it go台球密室逃脱","address":"国济路20号七楼","longitude":121.51599,"latitude":31.30196}{"id":38092929,"name":"趣密室 & DIY手工坊","address":"石门二路333弄3号振安广场恒安大厦22楼E座","longitude":121.4598,"latitude":31.235432}{"id":57546152,"name":"好久不读 long time no read","address":"愚园路1208号","longitude":121.42646,"latitude":31.219221}{"id":66865461,"name":"VR family-虚拟现实体验馆","address":"大学路锦创路20号1101室创智66商务楼内（一兆韦德健身馆旁）","longitude":121.50922,"latitude":31.304209}{"id":9335488,"name":"77密室逃脱+真人CS(五角场店)","address":"四平路2500号东方商厦楼上金岛大厦1305室","longitude":121.515465,"latitude":31.298822}{"id":23062800,"name":"毛利侦探事务所密室逃脱","address":"大学路302号702室","longitude":121.50763,"latitude":31.30317}{"id":50431953,"name":"颠九宫真人游戏体验馆(杨浦店)","address":"国权路与邯郸路交叉口","longitude":121.50096,"latitude":31.297478}{"id":14155399,"name":"慢时光MYTIMECAFE","address":"武夷路339号","longitude":121.42406,"latitude":31.21347}{"id":59180246,"name":"月球剧情密室逃脱(淮海中路店)","address":"普安路189号曙光大厦18D","longitude":121.47889,"latitude":31.22244}{"id":27174604,"name":"MC精品真人密室逃脱(五角场店)","address":"翔殷路1128号8楼B4、B5","longitude":121.51691,"latitude":31.30103}{"id":32640417,"name":"西塞密室(长宁店)","address":"愚园路1391号3楼","longitude":121.42288,"latitude":31.218843}{"id":23403568,"name":"暗黑迷宫第三季","address":"南京西路1788号1788广场F201","longitude":121.44376,"latitude":31.22278}{"id":7045554,"name":"巴黎春天新世界酒店浓咖啡","address":"定西路1555号酒店2楼","longitude":121.4211,"latitude":31.218554}{"id":24899623,"name":"GIVE ME FIVE剧情密室逃脱(大学路店)","address":"大学路锦创路26号1102室创智66商务楼内","longitude":121.50918,"latitude":31.30425}{"id":67335522,"name":"nook诺克剧情密室 & VR虚拟现实体验馆(五角场店)","address":"大学路锦创路26号1602室创智66商务楼内","longitude":121.509315,"latitude":31.304174}{"id":4275877,"name":"Home Garden","address":"安化路492号德必易园多媒体创意园区106室","longitude":121.4202,"latitude":31.215342}{"id":18593150,"name":"TIK  TOK","address":"江苏路458号112室舜元企业发展大厦","longitude":121.43106,"latitude":31.218548}{"id":22447664,"name":"Running基地","address":"军工路100号","longitude":121.558266,"latitude":31.281694}{"id":24678174,"name":"太平洋咖啡(兆丰广场店)","address":"长宁路999号兆丰广场","longitude":121.41788,"latitude":31.21765}{"id":57439748,"name":"essence casa","address":"愚园路1329号","longitude":121.42449,"latitude":31.21873}{"id":65835399,"name":"大华虎城第三空间","address":"白丽路61号","longitude":121.35216,"latitude":31.27899}{"id":19671618,"name":"FullHouse桌游棋牌密室(南京西路店)","address":"大田路129号嘉发大厦A座25楼G","longitude":121.46391,"latitude":31.23294}{"id":23740568,"name":"aMaze真人密室逃脱(人民广场大世界店)","address":"云南南路180号淮云大厦8楼","longitude":121.48128,"latitude":31.2265}{"id":22132387,"name":"智源咖啡(中山公园店)","address":"安化路492号易园","longitude":121.42034,"latitude":31.21529}{"id":56890263,"name":"跑男开始了 runningman(公司活动，年会撕名牌)","address":"淮海中路","longitude":121.49525,"latitude":31.22792}{"id":18636516,"name":"ASA亚撒真人密室逃脱","address":"武夷路418弄(近定西路)1号武定大厦203室","longitude":121.421974,"latitude":31.212627}{"id":5857955,"name":"Crazycube颠九宫密室逃脱(大学路店)","address":"创智坊大学路302号701室","longitude":121.50754,"latitude":31.303108}{"id":2036581,"name":"星巴克(龙之梦2店)","address":"长宁路1018号龙之梦购物中心1楼1073号铺","longitude":121.416916,"latitude":31.218727}{"id":13913129,"name":"Captain.C真人密室逃脱","address":"延平路69号延平大厦701室","longitude":121.44161,"latitude":31.227833}{"id":57682702,"name":"aMaze真人密室逃脱(五角场店)","address":"大学路292号602室","longitude":121.50777,"latitude":31.30327}

4.测试结果
以下为分别搜索周围3公里内的密室和咖啡店的结果。

17163949:aMaze真人密室逃脱(0.0km)6438722:Min魔魔岛密室逃脱(中山公园店)(0.005043281377521635km)32640417:西塞密室(长宁店)(0.47300570633073574km)6850935:nook诺克密室逃脱(长宁店)(0.5044378650402169km)18636516:ASA亚撒真人密室逃脱(0.7751646578452988km)23550163:白兔子密室逃脱(0.9977952318745087km)13913129:Captain.C真人密室逃脱(2.473229285495286km)16820366:小仙屋剧情密室逃脱(2.7563385153155853km)17950766:JOJO真人密室逃脱(2.855389720759213km)----------------24678174:太平洋咖啡(兆丰广场店)(0.11345485407738468km)7045554:巴黎春天新世界酒店浓咖啡(0.30362262844238574km)22132387:智源咖啡(中山公园店)(0.44119592062398144km)57832242:Daisy花&咖啡(1.1046485391701188km)

5.参考资料
[url=http://baobeituping.iteye.com/blog/2214857]使用Lucene-Spatial实现集成地理位置的全文检索[/url]
[url=http://iamyida.iteye.com/blog/2204455]Lucene5学习之Spatial地理位置搜索[/url]

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