包括百度地图，高德地图，谷歌地图的POI抓取
百度地图 http://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-placeapi api:（矩形搜索） http://api.map.baidu.com/place/v2/search?query=%E9%93%B6%E8%A1%8C&bounds=39.915,116.404,39.975,116.414&scope=2&page_size=20&page_num=0&output=json&ak=WwMkKI0MYGXv639HQvunrMOHdN8rnK8H key: Vn1ebvMZ1DCw2nj5LSQ738gmOB8AkCce 刘 WwMkKI0MYGXv639HQvunrMOHdN8rnK8H 胡 KWSoddWr4bd1CXh1gLe4GfmIuPKXuDO9 蔡 NQ4u00oIVst9I6sCYhMI9Tql3ssfF3rk 蔡
高德地图 http://lbs.amap.com/api/webservice/guide/api/search/#polygon api:（矩形搜索） http://restapi.amap.com/v3/place/polygon?polygon=113.75898,22.1505|114.45751,22.6178&offset=25&page=0&keywords=%E9%A4%90%E9%A5%AE%E6%9C%8D%E5%8A%A1&output=json&key=25b16059ee7de0d81ac33da58b3c3c05 key: a4a4d854ef99369328c358aec9f3b393 25b16059ee7de0d81ac33da58b3c3c05 3fe76d8ea22c29d700dddb44e5efcdfc
谷歌key https://developers.google.com/places/web-service/search api:（临近搜索） https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=22.6178,113.85898&radius=5000&type=atm&keyword=atm&language=zh-CN&key=AIzaSyCSsQlSPIUw7Ee4SPunuyiPLm7mxnKRbV0 key: AIzaSyCSsQlSPIUw7Ee4SPunuyiPLm7mxnKRbV0