c#-使用NewtonSoft解析JSON时出错
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圣诞快乐堆叠！我正在尝试从Wunderground天气API解析一些JSON,并且在尝试为变量分配值时遇到问题. Here是指向JSON的链接.只需知道我提供的类结构是一个大企业集团即可容纳多个JSON返回文件结构.我将提供类structre,然后是来自main的调用,最后是带有错误标记的实际方法.我在Xamarin(以前是MonoDevelop)工作.感谢您能提出的任何建议！
该错误显示为：
Newtonsoft.Json.JsonReaderException已引发
“无法将字符串转换为整数：5.0路径
‘current_observation.wind_gust_mph’,第60行,位置24.
public class Wunder
{
//constructor
public Wunder ()
{
}
//JSON classes
public class HistoryResponseContainer
{
public ResponseInfo response { get; set; }
public HistoryInfo history { get; set; }
public Location location { get; set; }
public CurrentObservation current_observation { get; set; }
}
public class ResponseInfo
{
public string version { get; set; }
public string termsofService { get; set; }
public Dictionary<string, int> features { get; set; }
}
public class HistoryInfo
{
public WUDate date { get; set; }
public WUDate utcdate { get; set; }
public Observation[] observations { get; set; }
public Dailysummary[] dailysummary { get; set; }
}
public class WUDate
{
public string pretty { get; set; }
public string year { get; set; }
public string mon { get; set; }
public string mday { get; set; }
public string hour { get; set; }
public string min { get; set; }
public string tzname { get; set; }
public DateTime Value
{
get
{
int year = int.Parse(this.year);
int month = int.Parse(this.mon);
int day = int.Parse(this.mday);
int hour = int.Parse(this.hour);
int minute = int.Parse(this.min);
var kind = this.tzname == "UTC"
? DateTimeKind.Utc
: DateTimeKind.Unspecified;
return new DateTime(year, month, day, hour, minute, 0, kind);
}
}
}
public class Observation
{
public WUDate date { get; set; }
public WUDate utcdate { get; set; }
public string tempm { get; set; }
public string tempi { get; set; }
public string dewptm { get; set; }
public string dewpti { get; set; }
public string hum { get; set; }
public string wspdm { get; set; }
public string wspdi { get; set; }
public string wgustm { get; set; }
public string wgusti { get; set; }
public string wdird { get; set; }
public string wdire { get; set; }
public string vism { get; set; }
public string visi { get; set; }
public string pressurem { get; set; }
public string pressurei { get; set; }
public string windchillm { get; set; }
public string windchilli { get; set; }
public string heatindexm { get; set; }
public string heatindexi { get; set; }
public string precipm { get; set; }
public string precipi { get; set; }
public string conds { get; set; }
public string icon { get; set; }
public string fog { get; set; }
public string rain { get; set; }
public string snow { get; set; }
public string hail { get; set; }
public string thunder { get; set; }
public string tornado { get; set; }
public string metar { get; set; }
}
public class Dailysummary
{
public WUDate date { get; set; }
public string fog { get; set; }
public string rain { get; set; }
public string snow { get; set; }
public string snowfallm { get; set; }
public string snowfalli { get; set; }
public string monthtodatesnowfallm { get; set; }
public string monthtodatesnowfalli { get; set; }
public string since1julsnowfallm { get; set; }
public string since1julsnowfalli { get; set; }
public string snowdepthm { get; set; }
public string snowdepthi { get; set; }
public string hail { get; set; }
public string thunder { get; set; }
public string tornado { get; set; }
public string meantempm { get; set; }
public string meantempi { get; set; }
public string meandewptm { get; set; }
public string meandewpti { get; set; }
public string meanpressurem { get; set; }
public string meanpressurei { get; set; }
public string meanwindspdm { get; set; }
public string meanwindspdi { get; set; }
public string meanwdire { get; set; }
public string meanwdird { get; set; }
public string meanvism { get; set; }
public string meanvisi { get; set; }
public string humidity { get; set; }
public string maxtempm { get; set; }
public string maxtempi { get; set; }
public string mintempm { get; set; }
public string mintempi { get; set; }
public string maxhumidity { get; set; }
public string minhumidity { get; set; }
public string maxdewptm { get; set; }
public string maxdewpti { get; set; }
public string mindewptm { get; set; }
public string mindewpti { get; set; }
public string maxpressurem { get; set; }
public string maxpressurei { get; set; }
public string minpressurem { get; set; }
public string minpressurei { get; set; }
public string maxwspdm { get; set; }
public string maxwspdi { get; set; }
public string minwspdm { get; set; }
public string minwspdi { get; set; }
public string maxvism { get; set; }
public string maxvisi { get; set; }
public string minvism { get; set; }
public string minvisi { get; set; }
public string gdegreedays { get; set; }
public string heatingdegreedays { get; set; }
public string coolingdegreedays { get; set; }
public string precipm { get; set; }
public string precipi { get; set; }
public string precipsource { get; set; }
public string heatingdegreedaysnormal { get; set; }
public string monthtodateheatingdegreedays { get; set; }
public string monthtodateheatingdegreedaysnormal { get; set; }
public string since1sepheatingdegreedays { get; set; }
public string since1sepheatingdegreedaysnormal { get; set; }
public string since1julheatingdegreedays { get; set; }
public string since1julheatingdegreedaysnormal { get; set; }
public string coolingdegreedaysnormal { get; set; }
public string monthtodatecoolingdegreedays { get; set; }
public string monthtodatecoolingdegreedaysnormal { get; set; }
public string since1sepcoolingdegreedays { get; set; }
public string since1sepcoolingdegreedaysnormal { get; set; }
public string since1jancoolingdegreedays { get; set; }
public string since1jancoolingdegreedaysnormal { get; set; }
}
public class Station
{
public string city { get; set; }
public string state { get; set; }
public string country { get; set; }
public string icao { get; set; }
public string lat { get; set; }
public string lon { get; set; }
}
public class Airport
{
public List<Station> station { get; set; }
}
public class Station2
{
public string neighborhood { get; set; }
public string city { get; set; }
public string state { get; set; }
public string country { get; set; }
public string id { get; set; }
public double lat { get; set; }
public double lon { get; set; }
public int distance_km { get; set; }
public int distance_mi { get; set; }
}
public class Pws
{
public List<Station2> station { get; set; }
}
public class NearbyWeatherStations
{
public Airport airport { get; set; }
public Pws pws { get; set; }
}
public class Location
{
public string type { get; set; }
public string country { get; set; }
public string country_iso3166 { get; set; }
public string country_name { get; set; }
public string state { get; set; }
public string city { get; set; }
public string tz_short { get; set; }
public string tz_long { get; set; }
public string lat { get; set; }
public string lon { get; set; }
public string zip { get; set; }
public string magic { get; set; }
public string wmo { get; set; }
public string l { get; set; }
public string requesturl { get; set; }
public string wuiurl { get; set; }
public NearbyWeatherStations nearby_weather_stations { get; set; }
}
public class CurrentObservation
{
public Image image { get; set; }
public DisplayLocation display_location { get; set; }
public ObservationLocation observation_location { get; set; }
public Estimated estimated { get; set; }
public string station_id { get; set; }
public string observation_time { get; set; }
public string observation_time_rfc822 { get; set; }
public string observation_epoch { get; set; }
public string local_time_rfc822 { get; set; }
public string local_epoch { get; set; }
public string local_tz_short { get; set; }
public string local_tz_long { get; set; }
public string local_tz_offset { get; set; }
public string weather { get; set; }
public string temperature_string { get; set; }
public double temp_f { get; set; }
public double temp_c { get; set; }
public string relative_humidity { get; set; }
public string wind_string { get; set; }
public string wind_dir { get; set; }
public int wind_degrees { get; set; }
public double wind_mph { get; set; }
public int wind_gust_mph { get; set; }
public int wind_kph { get; set; }
public int wind_gust_kph { get; set; }
public string pressure_mb { get; set; }
public string pressure_in { get; set; }
public string pressure_trend { get; set; }
public string dewpoint_string { get; set; }
public int dewpoint_f { get; set; }
public int dewpoint_c { get; set; }
public string heat_index_string { get; set; }
public string heat_index_f { get; set; }
public string heat_index_c { get; set; }
public string windchill_string { get; set; }
public string windchill_f { get; set; }
public string windchill_c { get; set; }
public string feelslike_string { get; set; }
public string feelslike_f { get; set; }
public string feelslike_c { get; set; }
public string visibility_mi { get; set; }
public string visibility_km { get; set; }
public string solarradiation { get; set; }
public string UV { get; set; }
public string precip_1hr_string { get; set; }
public string precip_1hr_in { get; set; }
public string precip_1hr_metric { get; set; }
public string precip_today_string { get; set; }
public string precip_today_in { get; set; }
public string precip_today_metric { get; set; }
public string icon { get; set; }
public string icon_url { get; set; }
public string forecast_url { get; set; }
public string history_url { get; set; }
public string ob_url { get; set; }
}
public class ObservationLocation
{
public string full { get; set; }
public string city { get; set; }
public string state { get; set; }
public string country { get; set; }
public string country_iso3166 { get; set; }
public string latitude { get; set; }
public string longitude { get; set; }
public string elevation { get; set; }
}
public class Image
{
public string url { get; set; }
public string title { get; set; }
public string link { get; set; }
}
public class DisplayLocation
{
public string full { get; set; }
public string city { get; set; }
public string state { get; set; }
public string state_name { get; set; }
public string country { get; set; }
public string country_iso3166 { get; set; }
public string zip { get; set; }
public string magic { get; set; }
public string wmo { get; set; }
public string latitude { get; set; }
public string longitude { get; set; }
public string elevation { get; set; }
}
public class Estimated
{
}
这是来自main的电话.
class MainClass
{
public static void Main (string[] args)
{
Wunder data = new Wunder ();
string StationID = "KCOBOULD67";
string CurrentConditions = data.GetCurrentConditions (StationID);
Console.WriteLine (CurrentConditions);
}
}
最后,这是被调用的方法.我拿出了我的地下钥匙.如果您需要返回JSON的示例,请查看顶部的链接.
public String GetCurrentConditions(string StationID){
String url = @"http://api.wunderground.com/api/" + wundergroundkey + "/conditions/q/pws:" + StationID + ".json";
Uri uri = new Uri(url);
WebRequest webRequest = WebRequest.Create(uri);
WebResponse response = webRequest.GetResponse();
StreamReader streamReader = new StreamReader(response.GetResponseStream());
String responseData = streamReader.ReadToEnd();
var container = JsonConvert.DeserializeObject<HistoryResponseContainer> (responseData);
String stationid = container.current_observation.station_id;
String station_lat = container.current_observation.observation_location.latitude;
String station_lon = container.current_observation.observation_location.longitude;
String station_data = stationid + station_lat + station_lon;
return (station_data);
} //End GetCurrentConditions
同样,错误显示为：
Newtonsoft.Json.JsonReaderException已引发
“无法将字符串转换为整数：5.0路径
‘current_observation.wind_gust_mph’,第60行,位置24.
解决方法:
您向我们提供了以下JSON的链接：
http://api.wunderground.com/api/21fd5aec70326254/conditions/q/CA/San_Francisco.json
如您所见,属性wind_gust_mph为0(不带引号,因此为Integer).此JSON也很好用.但是在您的代码中,您使用以下JSON：
http://api.wunderground.com/api/21fd5aec70326254/conditions/q/pws:KCOBOULD67.json
那里的属性wind_gust_mph是“ 4.0”(带引号,所以是String).而且您不能将字符串属性解析为整数.而且wind_kph和wind_gust_kph的属性是错误的,应该是字符串或双精度型：
public string wind_gust_mph { get; set; }
public double wind_kph { get; set; }
public string wind_gust_kph { get; set; }
希望这对您和圣诞节有帮助.
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