Shulou(Shulou.com)06/02 Report--

Redis how to achieve query nearby people function, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Import redis.clients.jedis.GeoCoordinate

Import redis.clients.jedis.GeoRadiusResponse

Import redis.clients.jedis.GeoUnit

Import redis.clients.jedis.Jedis

Import java.util.HashMap

Import java.util.List

Import java.util.Map

Public class GeoHashExample {

Public static void main (String [] args) {

Jedis jedis = new Jedis ("127.0.0.1", 6379)

Map map = new HashMap ()

/ / add Xiaoming's position

Map.put ("xiaoming", new GeoCoordinate (116.404269, 39.913164)

/ / add the location of Xiao Hong

Map.put ("xiaohong", new GeoCoordinate (116.36, 39.922461)

/ / add the location of Xiao Mei

Map.put ("xiaomei", new GeoCoordinate (116.499705, 39.874635)

/ / add a waiter

Map.put ("xiaoer", new GeoCoordinate (116.193275, 39.996348)

Jedis.geoadd ("person", map)

/ / query the straight line distance between Xiao Ming and Xiao Hong

System.out.println ("Xiao Ming and Xiao Hong are apart:" + jedis.geodist ("person", "xiaoming")

"xiaohong", GeoUnit.KM) + "KM")

/ / inquire about people who are 5 kilometers near Xiaoming.

List res = jedis.georadiusByMemberReadonly ("person", "xiaoming"

5, GeoUnit.KM)

For (int I = 1; I < res.size (); iTunes +) {

System.out.println ("people near Xiaoming:" + res.get (I) .getMemberByString ())

}

}

}

The results of the above procedures are as follows:

Distance between Xiao Ming and Xiao Hong: 3.9153 KM

People near Xiaoming: xiaohong

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