WebClient webClient = new WebClient();
**webClient.Headers.Add("User-Agent: Other");**
var jsonData = webClient.DownloadData("http://nominatim.openstreetmap.org/reverse?format=json&lat=23.02951&lon=72.48689");
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(RootObject));
var rootObject = ser.ReadObject(new MemoryStream(jsonData));
你需要对从 Web 服务获取的 JSON 数据进行反序列化。 你需要定义两个新类,分别为:
[DataContract]
public class Address
{
[DataMember]
public string road { get; set; }
[DataMember]
public string suburb { get; set; }
[DataMember]
public string city { get; set; }
[DataMember]
public string state_district { get; set; }
[DataMember]
public string state { get; set; }
[DataMember]
public string postcode { get; set; }
[DataMember]
public string country { get; set; }
[DataMember]
public string country_code { get; set; }
}
[DataContract]
public class RootObject
{
[DataMember]
public string place_id { get; set; }
[DataMember]
public string licence { get; set; }
[DataMember]
public string osm_type { get; set; }
[DataMember]
public string osm_id { get; set; }
[DataMember]
public string lat { get; set; }
[DataMember]
public string lon { get; set; }
[DataMember]
public string display_name { get; set; }
[DataMember]
public Address address { get; set; }
}
之后,您可以使用以下代码获取数据:
WebClient webClient = new WebClient();
var jsonData = webClient.DownloadData("http://nominatim.openstreetmap.org/reverse?format=json&lat=23.02951&lon=72.48689");
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(RootObject));
var rootObject = ser.ReadObject(new MemoryStream(jsonData));
rootObject 包含了你所需的所有数据,以便将其转换为纯文本或任何其他格式。
webClient.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
webClient.Headers.Add("Referer", "http://www.microsoft.com");
(根据您的喜好进行修改)。