整合Hibernate空间和JPA实现Geo搜索的方法

我正在尝试将hibernate空间与JPA进行Geo搜索的整合.我已经在官方网站上引用了tutorial(我没有与hibernatspatial相关联).

不幸的是,本教程不介绍如何从纬度/经度对创建Point实例.我试图在这里做,但我仍然不知道这是否是将纬度/经度对转换为JTS点实例的正确方法&＃xff1a;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.GeometryFactory;

import com.vividsolutions.jts.geom.Point;

import org.geotools.geometry.jts.JTSFactoryFinder;

import org.hibernate.annotations.Type;

import javax.persistence.*;

&＃64;Entity

public class Location {

private Double latitude;

private Double longitude;

&＃64;Type(type &＃61; "org.hibernatespatial.GeometryUserType")

private Point coordinates;

private final GeometryFactory geometryFactory &＃61; JTSFactoryFinder.getGeometryFactory(null);

&＃64;PrePersist

&＃64;PreUpdate

public void updateCoordinate() {

if (this.latitude &＃61;&＃61; null || this.longitude &＃61;&＃61; null) {

this.coordinates &＃61; null;

} else {

this.coordinates &＃61; geometryFactory.createPoint(new Coordinate(latitude, longitude));

}

}

public Double getLatitude() {

return latitude;

}

public void setLatitude(Double latitude) {

this.latitude &＃61; latitude;

}

public Double getLongitude() {

return longitude;

}

public void setLongitude(Double longitude) {

this.longitude &＃61; longitude;

}

}