Now commonly used gold, tencent, baidu map map, etc., are all open API, individuals can apply for to develop, through the generation and development of key, call the maps API service, of course, individual user API requests per day is limited, generally for simple data query is sufficient, in this way, We can still accumulate some common map data from the API.

Amap limits the number of requests per day, generally thousands of requests are developed, of course, each time the amount of data is also limited.

For example, a commonly used POI search network service can call API service according to some commonly used keywords to batch search POI information, the key is to include map coordinate information, which can enable us to display on the map.

Registering users for each map platform is an essential step, as this is required in order to obtain the request API key.

Amap’s API for searching POI: lbs.amap.com/api/webserv…

There are detailed request parameters url configuration, return results of the field description.

Request parameters:



Return result:

The request return can be in JSON format.

The above search POI uses HTTP requests, which are supported in Java, C#, python, and other development languages.

Coordinate problem, Autonavi map, Tencent returned the coordinates of Mars coordinates, Baidu coordinates returned by baidu map, there are conversion codes for these coordinates on the Internet, or commonly used map download tools can also be converted, need to be displayed in the normal latitude and longitude data, to be converted in advance.