Redis-GEO的Java中使用

2020-11-21

配置redis

<dependency>
  <groupId>redis.clients</groupId>
  <artifactId>jedis</artifactId>
  <version>2.9.0</version>
</dependency>

<bean id="stringRedisSerializer" class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
<bean id="jsonRedisSerializer" class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer"/>

系统内进行使用，hash key使用generic，value使用jdk进行序列化

<!-- redis template definition -->

<bean id="redisTemplate"
      class="org.springframework.data.redis.core.RedisTemplate" primary="true">
    <property name="connectionFactory" ref="jedisConnFactory"/>
    <property name="keySerializer" ref="stringRedisSerializer"/>
    <property name="hashKeySerializer" ref="jsonRedisSerializer"/>
</bean>

<bean id="statisticsRedisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
    <property name="connectionFactory" ref="jedisConnFactory"/>
    <property name="keySerializer" ref="stringRedisSerializer"/>
    <property name="valueSerializer" ref="stringRedisSerializer"/>
</bean>

<bean id="redisTemplateSecond" class="org.springframework.data.redis.core.RedisTemplate">
    <property name="connectionFactory" ref="jedisConnFactory"/>
    <property name="keySerializer" ref="stringRedisSerializer"/>
    <property name="valueSerializer" ref="jsonRedisSerializer"/>
</bean>

添加坐标

key ,经度 , 维度 , 距离 ,return m 表示单位为米

public Long addReo(String key, double longitude, double latitude, String itemName) {
    Point point = new Point(longitude, latitude);
    return redisTemplate.getOperations().opsForGeo().geoAdd(key, point, itemName);
}

批量添加地理位置

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public Long geoadd(String key, Map<Object, Point> memberCoordinateMap) {
    return redisTemplate.getOperations().opsForGeo().geoAdd(key, memberCoordinateMap);
}

根据给定地理位置获取指定范围内的地理位置集合

返回匹配位置的经纬度 + 匹配位置与给定地理位置的距离 + 从近到远排序

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public List<GeoRadiusResponse> georadiusByMember(String key, String member, double radius) {
    return (List<GeoRadiusResponse>) redisTemplate.getOperations().opsForGeo().geoRadiusByMember(key, member, radius);
}

根据给定地理位置坐标获取指定范围内的地理位置集合

public GeoResults geoRadius(String key, double longitude, double latitude, double radius) {
    Point point = new Point(longitude, latitude);
    Distance distance = new Distance(radius, Metrics.KILOMETERS);
    Circle circle = new Circle(point, distance);
    return redisTemplate.getOperations().opsForGeo().geoRadius(key, circle);
}

根据给定地理位置坐标获取指定范围内的地理位置部分集合

public GeoResults geoRadiusArgs(String key, double longitude, double latitude, double radius, int limit) {
    Point point = new Point(longitude, latitude);
    Distance distance = new Distance(radius, RedisGeoCommands.DistanceUnit.KILOMETERS);
    Circle circle = new Circle(point, distance);
      RedisGeoCommands.GeoRadiusCommandArgs args= RedisGeoCommands.GeoRadiusCommandArgs.newGeoRadiusArgs().includeDistance().includeCoordinates().limit(limit).sortAscending();
    return redisTemplate.getOperations().opsForGeo().geoRadius(key, circle, args);
}

查询两位置距离

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public Double geoDist(String key, String member1, String member2, Metrics unit) {
    return redisTemplate.getOperations().opsForGeo().geoDist(key, member1, member2, unit).getValue();
}

获取地理位置的坐标

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public List<GeoCoordinate> geopos(String key, String... members) {
    return redisTemplate.getOperations().opsForGeo().geoPos(key, members);
}

可以获取某个地理位置的geohash值

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public List<String> geohash(String key, String... members) {
    return redisTemplate.getOperations().opsForGeo().geoHash(key, members);
}