elasticsearch geo_point 地理位置过滤 按经度排序

elasticsearch 支持强大的经纬度坐标过滤。

1、首先要建立坐标类型的字段'type' ='geo_point'

     es存储的值是这样的：

"poi": [           113.40780444444,           22.920241666667       ],

2、构建各种经纬度过滤条件

a、获取屏幕范围内，只需屏幕的两个对角的坐标。

{         "from": 0,         "size": 20,         "query": {             "filtered": {                 "query": {                     "match_all": []                 },                 "filter": {                   "geo_bounding_box" : {                     "poi" : {                         "top_right" : {                             "lat" : 23.172558,                             "lon" : 113.370667                         },                         "bottom_left" : {                             "lat" : 23.14997,                             "lon" : 113.313425                         }                     }                   }                 }             }         }     }

php代码：

$filter[] = array('geo_bounding_box'=>array('poi'=>array(                 'top_right'=>array('lat'=>$this->params['rightTop'][1],'lon'=>$this->params['rightTop'][0]),                 'bottom_left'=>array('lat'=>$this->params['leftBottom'][1],'lon'=>$this->params['leftBottom'][0]),             )));          $request['body']['query']['filtered']['filter']['and'] = $filter;   b、以一个点为中心，查找范围

$request['body']['query']['filtered']['filter']['and'][] = array(                     'geo_distance_range' => array(                         'from' => '0km',                         'to'   => '80km',                         'poi'  => array('lon' => $longitude, 'lat' => $latitude)                     ),                 );

c、按距离排序

"sort": {             "_geo_distance": {                 "poi": {                     "lon": "113.25909555556",                     "lat": "23.131899722222"                 },                 "order": "asc",                 "unit": "km"             }         }