【发布时间】：2015-05-14 04:00:19
【问题描述】：
我已经开始构建一个应用程序来从 World Weather Online 获取潮汐信息、天气信息、地图功能等，但它无法获得 JSON 响应。
我已经通过 NuGet 安装了 JSON.net，运行的是 Windows 8.1。我什至只能通过将我的 JSON URL 粘贴到实际浏览器中来查看数据。然后使用它在 json2sharp 的输出在下面创建我的代码的底部。
试过http://www.codeproject.com/Tips/397574/Use-Csharp-to-get-JSON-Data-from-the-Web-and-Map-i 和How to get a json string from url?。
using System;
using System.Net;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using GMap.NET.WindowsForms;
using GMap.NET;
using GMap.NET.MapProviders;
using System.Xml.Linq;
using System.Xml;
using System.IO;
using System.Web;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json;
using RestSharp;
using Newtonsoft.Json.Utilities;
namespace EOD_Assistant
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void myMap_Load(object sender, EventArgs e)
{
myMap.MapProvider = BingHybridMapProvider.Instance;
myMap.SetPositionByKeywords("Comox, Canada");
myMap.MinZoom = 1;
myMap.MaxZoom = 17;
myMap.Zoom = 10;
myMap.CanDragMap = true;
myMap.MapScaleInfoEnabled = true;
}
private void Form1_Load(object sender, EventArgs e)
{
string url = "http://api.worldweatheronline.com/free/v2/weather.ashx?q=Campbell%20River&format=json&num_of_days=5&callback=rrr&key=1ccf49ff57a386e570286ae9294b9";
}
private void GetWeather()
{
}
private void weatherBtn_Click(object sender, EventArgs e)
{
}
public class WeatherDesc
{
public string value { get; set; }
}
public class WeatherIconUrl
{
public string value { get; set; }
}
public class CurrentCondition
{
public string cloudcover { get; set; }
public string FeelsLikeC { get; set; }
public string FeelsLikeF { get; set; }
public string humidity { get; set; }
public string observation_time { get; set; }
public string precipMM { get; set; }
public string pressure { get; set; }
public string temp_C { get; set; }
public string temp_F { get; set; }
public string visibility { get; set; }
public string weatherCode { get; set; }
public List<WeatherDesc> weatherDesc { get; set; }
public List<WeatherIconUrl> weatherIconUrl { get; set; }
public string winddir16Point { get; set; }
public string winddirDegree { get; set; }
public string windspeedKmph { get; set; }
public string windspeedMiles { get; set; }
}
public class Request
{
public string query { get; set; }
public string type { get; set; }
}
public class Astronomy
{
public string moonrise { get; set; }
public string moonset { get; set; }
public string sunrise { get; set; }
public string sunset { get; set; }
}
public class WeatherDesc2
{
public string value { get; set; }
}
public class WeatherIconUrl2
{
public string value { get; set; }
}
public class Hourly
{
public string chanceoffog { get; set; }
public string chanceoffrost { get; set; }
public string chanceofhightemp { get; set; }
public string chanceofovercast { get; set; }
public string chanceofrain { get; set; }
public string chanceofremdry { get; set; }
public string chanceofsnow { get; set; }
public string chanceofsunshine { get; set; }
public string chanceofthunder { get; set; }
public string chanceofwindy { get; set; }
public string cloudcover { get; set; }
public string DewPointC { get; set; }
public string DewPointF { get; set; }
public string FeelsLikeC { get; set; }
public string FeelsLikeF { get; set; }
public string HeatIndexC { get; set; }
public string HeatIndexF { get; set; }
public string humidity { get; set; }
public string precipMM { get; set; }
public string pressure { get; set; }
public string tempC { get; set; }
public string tempF { get; set; }
public string time { get; set; }
public string visibility { get; set; }
public string weatherCode { get; set; }
public List<WeatherDesc2> weatherDesc { get; set; }
public List<WeatherIconUrl2> weatherIconUrl { get; set; }
public string WindChillC { get; set; }
public string WindChillF { get; set; }
public string winddir16Point { get; set; }
public string winddirDegree { get; set; }
public string WindGustKmph { get; set; }
public string WindGustMiles { get; set; }
public string windspeedKmph { get; set; }
public string windspeedMiles { get; set; }
}
public class Weather
{
public List<Astronomy> astronomy { get; set; }
public string date { get; set; }
public List<Hourly> hourly { get; set; }
public string maxtempC { get; set; }
public string maxtempF { get; set; }
public string mintempC { get; set; }
public string mintempF { get; set; }
public string uvIndex { get; set; }
}
public class Data
{
public List<CurrentCondition> current_condition { get; set; }
public List<Request> request { get; set; }
public List<Weather> weather { get; set; }
}
public class RootObject
{
public Data data { get; set; }
}
public class PleaseWORK
{
private static T _download_serialized_json_data<T>(string url) where T : new()
{
using (var w = new WebClient())
{
var json_data = string.Empty;
// attempt to download JSON data as a string
try
{
json_data = w.DownloadString(url);
}
catch (Exception) { }
// if string with JSON data is not empty, deserialize it to class and return its instance
return !string.IsNullOrEmpty(json_data) ? JsonConvert.DeserializeObject<T>(json_data) : new T();
}
}
}
}
}
【问题讨论】：
-
我不确定您使用的是高级版还是免费版，但无论哪种情况，您都绝对不应该共享您的 api 密钥。 . . （如果它是优质的，人们可以使用它，而你最终会付费）
-
您可能应该澄清出了什么问题。抛出什么异常等等。