c#封装百度web服务geocoding api 、百度坐标转换示例
c#封装百度web服务geocoding api 、百度坐标转换示例
发布时间:2016-12-28 来源:查字典编辑
摘要:1、创建基础参数类复制代码代码如下:publicstaticclassBaiduConstParams{publicconststringP...

1、创建基础参数类

复制代码 代码如下:

public static class BaiduConstParams

{

public const string PlaceApIv2Search = "http://api.map.baidu.com/place/v2/search";

public const string PlaceApIv2Detail = "http://api.map.baidu.com/place/v2/detail";

public const string PlaceApIv2Eventsearch = "http://api.map.baidu.com/place/v2/eventsearch";

public const string PlaceApIv2Eventdetail = "http://api.map.baidu.com/place/v2/eventdetail";

public const string GeocodingApIv2 = "http://api.map.baidu.com/geocoder/v2/";

public const string GeocodingApIv2Reverse = "http://api.map.baidu.com/geocoder/v2/";

public const string TranslateApi = "http://openapi.baidu.com/public/2.0/bmt/translate";

public const string GeoconvApi = "http://api.map.baidu.com/geoconv/v1/";

}

public static class BaiduErrorMessages

{

public const string NotKey = "密钥不存在";

public const string LackParam = "缺少必要请求参数";

}

2、定义API错误信息与产品信息

复制代码 代码如下:

public enum BaiduLbsType

{

PlaceApIv2Search,

PlaceApIv2Detail,

PlaceApIv2Eventsearch,

PlaceApIv2Eventdetail,

GeocodingApIv2,

GeocodingApIv2Reverse,

Translate,

Geoconv

}

public enum Status

{

/// <summary>

/// 正常

/// </summary>

Ok = 0,

/// <summary>

/// 请求参数非法

/// </summary>

ParameterInvalid = 2,

/// <summary>

/// 权限校验失败

/// </summary>

VerifyFailure = 3,

/// <summary>

/// 配额校验失败

/// </summary>

QuotaFailure = 4,

/// <summary>

/// 不存在或者非法

/// </summary>

AkFailure = 5,

/// <summary>

/// Transform 内部错误

/// </summary>

InternalError = 1,

/// <summary>

/// from非法

/// </summary>

FromIllegal = 21,

/// <summary>

/// to非法

/// </summary>

ToIllegal = 22,

/// <summary>

/// coords非法

/// </summary>

CoordsIllegal = 24,

/// <summary>

/// coords个数非法,超过限制

/// </summary>

CoordsCountIllegal = 25

}

3、定义API结果返回实体映射类

复制代码 代码如下:

public class BaiduGeocodingResults

{

/// <summary>

/// 返回结果状态值, 成功返回0,其他值请查看附录。

/// </summary>

[JsonProperty(PropertyName = "status")]

public Status Status;

/// <summary>

/// 返回结果状态值, 成功返回0,其他值请查看附录。

/// </summary>

[JsonProperty(PropertyName = "result")]

public BaiduGeocodingResult Result;

}

public class BaiduGeocodingResult

{

/// <summary>

/// 经纬度坐标

/// </summary>

[JsonProperty(PropertyName = "location")]

public BaiduGeocodingLoaction Location;

/// <summary>

/// 位置的附加信息,是否精确查找。1为精确查找,0为不精确。

/// </summary>

[JsonProperty(PropertyName = "precise")]

public int Precise;

/// <summary>

/// 可信度

/// </summary>

[JsonProperty(PropertyName = "confidence")]

public int Confidence;

/// <summary>

/// 地址类型

/// </summary>

[JsonProperty(PropertyName = "level")]

public string Level;

/// <summary>

/// 结构化地址信息

/// </summary>

[JsonProperty(PropertyName = "formatted_address")]

public string FormattedAddress;

/// <summary>

/// 所在商圈信息,如 "人民大学,中关村,苏州街"

/// </summary>

[JsonProperty(PropertyName = "business")]

public string Business;

/// <summary>

/// 具体地址

/// </summary>

[JsonProperty(PropertyName = "addressComponent")]

public BaiduGeocodingAddress AddressComponent;

}

public class BaiduGeocodingLoaction

{

/// <summary>

/// 纬度值

/// </summary>

[JsonProperty(PropertyName = "lat")]

public decimal Lat;

/// <summary>

/// 经度值

/// </summary>

[JsonProperty(PropertyName = "lng")]

public decimal Lng;

}

public class BaiduGeocodingAddress

{

/// <summary>

/// 城市名

/// </summary>

[JsonProperty(PropertyName = "city")]

public string City;

/// <summary>

/// 区县名

/// </summary>

[JsonProperty(PropertyName = "district")]

public string District;

/// <summary>

/// 省名

/// </summary>

[JsonProperty(PropertyName = "province")]

public string Province;

/// <summary>

/// 街道名

/// </summary>

[JsonProperty(PropertyName = "street")]

public string Street;

/// <summary>

/// 街道门牌号

/// </summary>

[JsonProperty(PropertyName = "street_number")]

public string StreetNumber;

}

4、创建API通用处理类

复制代码 代码如下:

public class BaiduLbs

{

private readonly string _key;

public static string CurrentRequest = "";

public BaiduLbs(string key)

{

_key = key;

}

/// <summary>

/// 请求

/// </summary>

/// <param name="param"></param>

/// <param name="baiduLbsType"></param>

/// <param name="encoding"></param>

/// <param name="action"></param>

public void Request(string param, BaiduLbsType baiduLbsType, Encoding encoding, Action<string> action)

{

WebClient webClient = new WebClient { Encoding = encoding };

string url = "";

switch (baiduLbsType)

{

case BaiduLbsType.PlaceApIv2Search:

url = string.Format(BaiduConstParams.PlaceApIv2Search + "?{0}", param);

break;

case BaiduLbsType.PlaceApIv2Detail:

url = string.Format(BaiduConstParams.PlaceApIv2Detail + "?{0}", param);

break;

case BaiduLbsType.PlaceApIv2Eventsearch:

url = string.Format(BaiduConstParams.PlaceApIv2Eventsearch + "?{0}", param);

break;

case BaiduLbsType.PlaceApIv2Eventdetail:

url = string.Format(BaiduConstParams.PlaceApIv2Eventdetail + "?{0}", param);

break;

case BaiduLbsType.GeocodingApIv2:

case BaiduLbsType.GeocodingApIv2Reverse:

url = string.Format(BaiduConstParams.GeocodingApIv2 + "?{0}", param);

break;

case BaiduLbsType.Translate:

url = string.Format(BaiduConstParams.TranslateApi + "?{0}", param);

break;

case BaiduLbsType.Geoconv:

url = string.Format(BaiduConstParams.GeoconvApi + "?{0}", param);

break;

}

CurrentRequest = url;

action(webClient.DownloadString(url));

}

/// <summary>

/// 响应

/// </summary>

/// <typeparam name="T"></typeparam>

/// <param name="param"></param>

/// <param name="baiduLbsType"></param>

/// <param name="encoding"></param>

public T Response<T>(string param, BaiduLbsType baiduLbsType, Encoding encoding)

{

T t = default(T);

Request(param, baiduLbsType, encoding, json =>

{

if (baiduLbsType == BaiduLbsType.GeocodingApIv2 || baiduLbsType == BaiduLbsType.GeocodingApIv2Reverse)

{

if (json.Contains(""result":[]"))

{

json = json.Replace(""result":[]", ""result":{}");

}

}

t = (T)JsonConvert.DeserializeObject(json, typeof(T));

});

return t;

}

public BaiduGeocodingResults BaiduGeocoding(string address, string city)

{

address = System.Web.HttpUtility.UrlEncode(address);

city = System.Web.HttpUtility.UrlEncode(city);

string request = string.Format("address={0}&output=json&ak={1}&city={2}", address, _key, city);

var result = Response<BaiduGeocodingResults>(request, BaiduLbsType.GeocodingApIv2, Encoding.UTF8);

if (result.Status == Status.Ok && result.Result.Location == null)

{

request = string.Format("address={0}&output=json&ak={1}&city={2}", city + address, _key, city);

return Response<BaiduGeocodingResults>(request, BaiduLbsType.GeocodingApIv2, Encoding.UTF8);

}

return result;

}

public BaiduGeocodingResults BaiduGeocoding(string longitude, string dimensions, string pois)

{

var location = longitude + "," + dimensions;

string request = string.Format("ak={0}&location={1}&pois={2}", _key, location, pois);

return Response<BaiduGeocodingResults>(request, BaiduLbsType.GeocodingApIv2, Encoding.UTF8);

}

public GeoconvResults BaiduGeoconv(GeoconvParams geoconvParams, ref List<GeoconvPOI> geoconvPois)

{

geoconvParams.Ak = _key;

return Response<GeoconvResults>(geoconvParams.ToString(ref geoconvPois), BaiduLbsType.Geoconv, Encoding.UTF8);

}

public GeoconvResults BaiduGeoconv(GeoconvParams geoconvParams, GeoconvPOI geoconvPoi)

{

geoconvParams.Ak = _key;

List<GeoconvPOI> geoconvPois = new List<GeoconvPOI>

{

geoconvPoi

};

return Response<GeoconvResults>(geoconvParams.ToString(ref geoconvPois), BaiduLbsType.Geoconv, Encoding.UTF8);

}

}

推荐文章
猜你喜欢
附近的人在看
推荐阅读
拓展阅读
相关阅读
网友关注
最新C#教程学习
热门C#教程学习
编程开发子分类