4级地址库，省市县乡镇（街道），京东四级地址库 新采集的，JSON格式 {"id":2803,"name":"崇文区","pName":"北京","sub":[{"id":2829,"name":"一环到二环","pName":"","sub":[]},{"id":2842,"name":"二环到三环","pName":"","sub":[]}]}