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[ASP.net教程]百度地图 获取两点坐标之间的驾车距离(非直线距离) c#


百度接口了解:

http://lbsyun.baidu.com/index.php?title=webapi/route-matrix-api-v2

起点与终点为多对多关系,如果你只想取两个坐标,那就各取一个坐标即可。

如下方法,经过测试,获取的数据是正确的。方法没写完,自己转json数据

 

/// <summary>    /// 根据坐标点获取驾车距离    /// </summary>    /// <param name="origins">起点坐标</param>    /// <param name="destinations">终点坐标</param>    /// <returns></returns>    public static string GetDistance(string origins, string destinations)    {      try      {        //测试数据        origins = "22.823331,108.326998";        destinations = "22.832541,108.321788|22.83841,108.294974|22.817868,108.425637|22.883959,108.305368|22.83334,108.32637";        //行车距离        string url = "http://api.map.baidu.com/routematrix/v2/driving";        string ak = "595eRciHjA0MG4TmhTm5ak58M00bQand";        string param = string.Format("origins={0}&destinations={1}&output=json&ak={2}", origins, destinations, ak);        string strURL = url + '?' + param;        System.Net.HttpWebRequest request;        request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);        request.Method = "GET";        System.Net.HttpWebResponse response;        response = (System.Net.HttpWebResponse)request.GetResponse();        System.IO.Stream s;        s = response.GetResponseStream();        string StrDate = "";        string strValue = "";        StreamReader Reader = new StreamReader(s, Encoding.UTF8);        while ((StrDate = Reader.ReadLine()) != null)        {          strValue += StrDate + "\r\n";        }        return strValue;      }      catch (Exception)      {      }      return "";    }