/// <summary>
/// 坐标互转
/// </summary>
/// <param name="lng">经度</param>
/// <param name="lat">纬度</param>
/// <param name="from">待转换的坐标类型</param>
/// <param name="to">最终转换成的坐标类型</param>
/// <returns></returns>
public static Map ConvertAll(double lng, double lat, MapEnum from, MapEnum to)
{
//google 坐标转百度链接 //http://api.map.baidu.com/ag/coord/convert?from=2&to=4&x=&y=
//gps坐标的type=0
//google坐标的type=2
//baidu坐标的type=4
string path = "http://api.map.baidu.com/ag/coord/convert?from=" + from.GetHashCode() + "&to=" + to.GetHashCode() + "&x=" + lng + "+&y=" + lat;
//使用http请求获取转换结果、得到返回的结果
string res = HttpHelper.GET(path).ToString();
//处理结果
MapJson json = JsonHelper.JsonDeserialize <MapJson>(res);
Map map = new Map();
if (json.X != null)
{
byte[] outputb = Convert.FromBase64String(json.X);
map.X = Convert.ToDouble(Encoding.Default.GetString(outputb));
}
if (json.Y != null)
{
byte[] outputb = Convert.FromBase64String(json.Y);
map.Y = Convert.ToDouble(Encoding.Default.GetString(outputb));
}
return(map);
}
/// <summary>
/// 根据百度坐标获取地址
/// </summary>
/// <param name="lng">经度</param>
/// <param name="lat">纬度</param>
public static string XY2Address(double lng, double lat)
{
string res = HttpHelper.GET("http://api.map.baidu.com/geocoder/v2/?ak=" + ak + "&location=" + lat + "," + lng + "&output=xml&pois=0").ToString();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(res);
XmlNode note = xmlDoc.SelectSingleNode("//GeocoderSearchResponse//result//formatted_address");
return(note.InnerText);
}
/// <summary>
/// 根据地址返回百度坐标
/// </summary>
/// <param name="address">地址</param>
/// <param name="city">搜索在城市，如：上海市</param>
/// <returns></returns>
public static Map Address2BXBY(string address, string city)
{
Map json = new Map();
string url = "http://api.map.baidu.com/geocoder/v2/?ak=" + ak + "&output=xml&address=" + address + "&city=" + city;
string res = HttpHelper.GET(url).ToString();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(res);
XmlNode note = xmlDoc.SelectSingleNode("//GeocoderSearchResponse//result//location//lng");
if (!string.IsNullOrEmpty(note.InnerText))
{
json.X = Convert.ToDouble(note.InnerText);
}
note = xmlDoc.SelectSingleNode("//GeocoderSearchResponse//result//location//lat");
if (!string.IsNullOrEmpty(note.InnerText))
{
json.Y = Convert.ToDouble(note.InnerText);
}
return(json);
}