Spring Java MongoDB Geo Location Search service sample

1, configure the Pom.xml, add the following 2 in the original Spring project.

<span style= "White-space:pre" ></span><!--MONGO DB drive--><dependency>    <groupId> org.mongodb</groupid>    <artifactId>mongo-java-driver</artifactId>    <version> 3.2.2</version></dependency><!--spring-data-mongodb--><dependency>    <groupId> org.springframework.data</groupid>    <artifactId>spring-data-mongodb</artifactId>    < Version>1.9.2.release</version></dependency>

2, Configuration Spring-data-mongo.xml

<?xml version= "1.0" encoding= "UTF-8"? ><beans xmlns= "Http://www.springframework.org/schema/beans" xmlns: context= "Http://www.springframework.org/schema/context" xmlns:p= "http://www.springframework.org/schema/p" xmlns: aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP" xmlns:tx= "Http://www.springframework.org/schema/tx" xmlns:xsi= " Http://www.w3.org/2001/XMLSchema-instance "xmlns:mongo=" Http://www.springframework.org/schema/data/mongo "xsi: schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans-4.0.xsdhttp://www.springframework.org/schema/context Http://www.springframework.org/schema/context /spring-context-4.0.xsd Http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/ DATA/MONGO/SPRING-MONGO-1.0.XSDHTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP http://www.springframework.org/schema/ Aop/spring-aop-4.0.xsd Http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/ Spring-tx-4.0.xsdhttp://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd "><!--Default Bean name is ' MONGO '--><mongo:mongo host=" localhost "port=" 27017 "/><!--offers Convenience methods and automatic mapping between MongoDB JSON documents and your domain classes. --<bean id= "mongotemplate" class= "Org.springframework.data.mongodb.core.MongoTemplate" > < Constructor-arg ref= "Mongo"/> <constructor-arg name= "databaseName" value= "test"/> </bean></beans& Gt

3. MongoDB Parent Interface Class

package Com.zjp.cache;import Java.util.list;import com.mongodb.dbobject;/** * MongoDB Parent Interface class * @author Babylon * @version 1.1 * @dat E July 12, 2016-PM 1:22:23 */public Interface Mongodao {public DBObject findOne (String collection, dbobject query, Dbobje     CT fields); Public list<dbobject> Find (String collection, dbobject query, dbobject fields, dbobject by, int pagenum, int pa     Gesize);     Public list<dbobject> Find (String collection, dbobject query, dbobject fields, dbobject by, int limit);     public void Delete (String collection, DBObject dbobject);     public void Save (String collection, DBObject dbobject);     public void Update (String collection, dbobject query, DBObject Update, Boolean Upsert, Boolean multi);     Public Long count (String collection, dbobject query); Public list<?> Distinct (string collection, string key, DBObject query); }

4, MONDODB address Operation interface class

Package Com.zjp.cache; Import Com.mongodb.DBObject; Import java.util.List; /** * MONDODB Address Arithmetic Interface class * * @author Babylon * @version 1.1 * @date July 12, 2016-PM 1:42:06 */public Interface Mongogeodao exte NDS mongodao{

   /** * Aggregate query, query the point near a point, and return each point to the center point of the distance, in the case of the coordinate table Shard $nearsphere is not supported, * can use this method to query * @param Collection collection name * @param query criteria * @param Point Center coordinates * @param limit returns the number of records limits * @param Maxdistanc e Maximum distance * @return non-null List */public list<dbobject> geonear (String collection, DBObject q    Uery, point point,int limit, long maxdistance); /** * Query the coordinate points within the circular area, you need to specify the center point coordinates and radius, the RADIUS unit is m * * @param collection collection name * @param locationfield coordinate field * @pa         RAM center point coordinate [longitude, latitude] * @param radius radius Unit: M * @param fields query field * @param query Query condition * @param limit returns the number of record limits * @return non-null List */public list<dbobject> WI Thincircle (String collection,string Locationfield, point Center, long radius, dbobje     CT fields, dbobject query, int limit); /** * Specifies a point that returns the coordinate point near the point and is near to far, $nearSphere need to be indexed2dsphere or 2d, and supports Geojson and general coordinate pairs * Note: $nearSphere not valid in a shard cluster, use geonear * * @param Collection collection name * @para M Locationfield coordinate field * @param center point coordinate [longitude, latitude] * @param mindistance Nearest distance * @param maxdistance Farthest              Distance * @param query criteria * @param fields Query field * @param limit returns the number of record limits * @return  Non-null List */Public list<dbobject> Nearsphere (String collection, String Locationfield, point center,      Long mindistance, long maxdistance, dbobject query, dbobject fields, int limit); /** * Query all coordinate points within the specified enclosing polygon, the given polygon coordinate point must be first connected to form a closed polygon * such as a triangle * final linkedlist<double[]> polygon = n     EW linkedlist<> ();     * Polygon.addlast (new double[] {121.36, 31.18});     * Polygon.addlast (new double[] {121.35, 31.36});     * Polygon.addlast (new double[] {121.39, 31.17});     * Polygon.addlast (new double[] {121.36, 31.18}); * MongoDB will also look at the boundaries of polygons asPoll for part of a shape * @param collection collection name * @param locationfield coordinate field * @param polygon Polygon coordinates * @param fiel     DS query Field * @param query condition * @param limit returns the number of record limits * @return non-null list                                        */Public list<dbobject> Withinpolygon (String collection,string Locationfield,      list<double[]> polygon,dbobject fields,dbobject query,int limit);     /** * Queries all coordinate points within a specified number of enclosing polygons, a given polygon coordinate point must first meet to form a closed polygon * @param Collection collection name * @param locationfield coordinate field         * @param polygons Polygon Coordinate array * @param fields query field * @param query condition * @param limit Returns the number of record limits * @return non-null List */public list<dbobject> Withinmultipolygon (String collectio N,string Locationfield, list<list<double[]>> polygons,dbobject fields,d      Bobject query,int limit); /** * Find coordinate points within a rectangular area, this method is only 2dIndex is supported, not supported in 2dsphere * @param collection collection name * @param locationfield coordinate field * @param bottomleft lower left corner * @ Param upperright * @param fields query field * @param query criteria * @param limit returns the number of record limits Volume * @return non-null List */@Deprecated public list<dbobject> Withinbox (String collection, String Locationfield, point Bottomleft, point Upperright, dbobject fields, dbobject que Ry,int limit); }

5. MongoDB Service Implementation Class

Package Com.zjp.service.impl; Import Com.mongodb.aggregationoptions;import Com.mongodb.basicdbobject;import Com.mongodb.cursor;import Com.mongodb.dbobject;import Com.zjp.cache.mongogeodao;import Com.zjp.cache.point;import Org.slf4j.Logger;import Org.slf4j.loggerfactory;import Org.springframework.beans.factory.annotation.autowired;import Org.springframework.data.mongodb.core.mongotemplate;import Org.springframework.stereotype.repository;import Java.util.arraylist;import Java.util.linkedlist;import java.util.List;  /** * MongoDB Service Implementation class * * @author Babylon * @version 1.1 * @date July 12, 2016-PM 1:36:50 */@Repositorypublic class Mongodaoimpl        Implements Mongogeodao {private static Logger Logger = Loggerfactory.getlogger (Mongodaoimpl.class);     @Autowired private Mongotemplate mongotemplate; @Override public DBObject FindOne (String collection, dbobject query, dbobject fields) {return mongotemplate.get    Collection (Collection). FindOne (query, fields); } @Override PUBlic list<dbobject> Find (String collection, dbobject query, dbobject fields, dbobject by, int pagenum, int page        Size) {list<dbobject> List = new arraylist<> (); cursor cursor = mongotemplate.getcollection (collection). Find (Query, fields). Skip ((pageNum-1) * pageSize). Limit (        pageSize). sort (by);        while (Cursor.hasnext ()) {List.add (Cursor.next ()); } return List.size () > 0?    List:null; } @Override Public list<dbobject> find (String collection, dbobject query, dbobject fields, DBObject,        int limit) {list<dbobject> List = new arraylist<> ();        cursor cursor = mongotemplate.getcollection (collection). Find (Query, fields). Sort (by). Limit;        while (Cursor.hasnext ()) {List.add (Cursor.next ()); } return List.size () > 0?    List:null; } @Override public void Delete (String collection, DBObject dbobject) {mongotemplate.GetCollection (collection). Remove (DBObject); } @Override public void Save (String collection, DBObject dbobject) {Mongotemplate.getcollection (collection)    . Save (DBObject);         } @Override public void Update (String collection, dbobject query, DBObject Update, Boolean Upsert, Boolean multi) {    Mongotemplate.getcollection (collection). Update (query, update, Upsert, multi); @Override Public Long count (String collection, dbobject query) {return mongotemplate.getcollection (Collec    tion). Count (query); } @Override public list<?> distinct (string collection, string key, DBObject query) {return mongotemplate.    GetCollection (collection). Distinct (key, query); } @Override Public list<dbobject> geonear (String collection, dbobject query, point point, int limit, long max         Distance) {if (query==null) query = new Basicdbobject ();        list<dbobject> pipeLine = new arraylist<> (); Basicdbobject aggregate = new Basicdbobject ("$geoNear", New Basicdbobject ("near", New Basicdbobject ("type", "point"). Append (" Coordinates ", New double[]{118.783799, 31.979234}). Append (" Distancefield "," dist.calculated "). Append (" Query ", New Basicdbobject ()). Append (" num ", 5). Append (" MaxDistance ",). Append (" spherical ", true))        ;        Pipeline.add (aggregate);        Cursor Cursor=mongotemplate.getcollection (collection). Aggregate (PipeLine, Aggregationoptions.builder (). build ());        list<dbobject> list = new linkedlist<> ();        while (Cursor.hasnext ()) {List.add (Cursor.next ());    } return list;                                       } @Override Public list<dbobject> withincircle (String collection,string Locationfield, point Center, Long radius, dbobject fields, dbobject query, int limit) {linkedlist<object> C        Ircle = new linkedlist<> (); Set The Center coordinate circle. AddLast (New Double[]{center.getlng (), Center.getlat ()}); Set the radius.         Unit:meter Circle.addlast (radius/6378137.0);        if (query==null) query = new Basicdbobject ();        Query.put (Locationfield, New Basicdbobject ("$geoWithin", New Basicdbobject ("$centerSphere", circle));        Logger.info ("withincircle:{}", query.tostring ());    Return Mongotemplate.getcollection (collection). Find (Query, fields). Limit (limit). ToArray ();                                     } @Override Public list<dbobject> nearsphere (String collection, String Locationfield, point center, Long mindistance, long maxdistance, dbobject query, dbobject fields, int limit) {if (que         Ry==null) query = new Basicdbobject ();                             Query.put (Locationfield, New Basicdbobject ("$nearSphere", New Basicdbobject ("$geometry", New Basicdbobject ("type", "point"). Append ("CoordInates ", New Double[]{center.getlng (), Center.getlat ()})). Append (" $minDistance ", Mindistance)        . Append ("$maxDistance", MaxDistance)));        Logger.info ("nearsphere:{}", query.tostring ());    Return Mongotemplate.getcollection (collection). Find (Query, fields). Limit (limit). ToArray ();                                        } @Override Public list<dbobject> Withinpolygon (String collection, String Locationfield,            List<double[]> polygon, dbobject fields, dbobject query, int limit) {if (query==null)         query = new Basicdbobject ();        list<list<double[]>> polygons = new linkedlist<> ();        Polygons.add (Polygon);                        Query.put (Locationfield, New Basicdbobject ("$geoWithin", New Basicdbobject ("$geometry",        New Basicdbobject ("type", "Polygon"). Append ("coordinates", polygons))); Logger.info ("withinpolygon:{}", query.tostring ());    Return Mongotemplate.getcollection (collection). Find (Query, fields). Limit (limit). ToArray (); } @Override Public list<dbobject> Withinmultipolygon (String collection, String Locationfield, List<list&lt ;d ouble[]>> polygons, dbobject fields, dbobject query, int limit) {if (query==null) query = new Ba         Sicdbobject ();        list<list<list<double[]>>> List = new linkedlist<> (); for (list<double[]> polygon:polygons) {list<list<double[]>> temp = new Linkedlist<> (            );            Temp.add (Polygon);        List.add (temp);                        } query.put (Locationfield, New Basicdbobject ("$geoWithin", New Basicdbobject ("$geometry",        New Basicdbobject ("type", "Multipolygon"). Append ("coordinates", list)));        Logger.info ("withinmultipolygon:{}", query.tostring ()); Return Mongotemplate.getcolleCtion (collection). Find (Query, fields). Limit (limit). ToArray (); } @Override Public list<dbobject> Withinbox (String collection, String Locationfield, point Bottomleft, point         Upperright, dbobject fields, dbobject query, int limit) {if (query==null) query = new Basicdbobject ();        linkedlist<double[]> box = new linkedlist<> ();        Box.add (New Double[]{bottomleft.getlng (), Bottomleft.getlat ()});         Box.add (New Double[]{upperright.getlng (), Upperright.getlat ()});        Query.put (Locationfield, New Basicdbobject ("$geoWithin", New Basicdbobject ("$box", Box));        Logger.info ("withinbox:{}", query.tostring ());    Return Mongotemplate.getcollection (collection). Find (Query, fields). Limit (limit). ToArray (); } }

6. Add Data

Db.point.test.insert ({"Address": "Nanjing Lukou International Airport", "Loc": {"type": "Point", "coordinates": [118.783799,31.979234]}}) Db.poi Nt.test.insert ({"Address": "Nanjing Pukou Park", "Loc": {"type": "Point", "coordinates": [118.639523,32.070078]}}) db.point.test. Insert ({"Address": "Nanjing railway Station", "Loc": {"type": "Point", "coordinates": [118.803032,32.09248]}}) Db.point.test.insert ({"A Ddress ":" Nanjing Xinjiekou "," loc ": {" type ":" Point "," coordinates ": [118.790611,32.047616]}}) Db.point.test.insert ({" Address ": "Nanjing Zhang Fu Yuan", "loc": {"type": "Point", "coordinates": [118.790427,32.03722]}}) Db.point.test.insert ({"Address": "Nanjing Sanshan Street", "L OC ": {" type ":" Point "," coordinates ": [118.788135,32.029064]}}) Db.point.test.insert ({" Address ":" Nanjing Zhonghua Gate "," loc ": {" T Ype ":" Point "," coordinates ": [118.781161,32.013023]}) Db.point.test.insert ({" Address ":" Nanjing Ender Gate "," loc ": {" type ":" Poi NT "," coordinates ": [118.768964,31.99646]}})

7, must add index (why: https://docs.mongodb.com/manual/reference/operator/aggregation/geoNear/)

Db.point.test.ensureIndex ({loc: "2dsphere"})  

8. Invoking instances

@Autowiredprivate Mongodaoimpl Mongodao;

DBObject query = new Basicdbobject (); Point point = new Point ();p oint.setlng (118.783799);p Oint.setlat (31.979234); int limit = 5; Long maxdistance = 5000L; M list<dbobject> list = Mongodao.geonear ("point.test", query, point, limit, maxdistance); for (DBObject obj:list)   System.out.println (obj);

Spring Java MongoDB Geo Location Search service sample