获取天气数据C#

利用HttpClient的GetAsync方法

• 发送http请求并获取数据

class GetJson
{
//目标链接
private string APIStr = "http://t.weather.sojson.com/api/weather/city/101030100";
public async Task<string> HttpGet()
{
//转化为url格式
Uri APIUri = new Uri(APIStr);
//存储返回的json数据
string data = null;
try
{
using (HttpClient httpClient = new HttpClient())
{
//设置访问基址
//httpClient.BaseAddress = APIUri;
//设置相应时间
TimeSpan timeOut = new TimeSpan(0, 0, 30);
httpClient.Timeout = timeOut;
httpClient.DefaultRequestHeaders.Accept.Clear();
//向服务器发送get请求
data = await httpClient.GetStringAsync(APIUri);
}
}//超时抓取
catch(ArgumentOutOfRangeException e)
{
return e.Message.ToString();
}
return data;
}
}

• json数据的转化为本地对象
  引入处理json的package:Newtonsoft.Json
  1. 建立包含json相同数据相同的属性类

  //报文结构状态
  public class JsonInfo
  {
  public DateTime time { get; set; }
  public CityInfo cityinfo { get; set; }
  public string date { get; set; }
  public string message { get; set; }
  public string status { get; set; }
  public Data data { get; set; }
  }
  #region 详细数据
  //城市信息
  public class CityInfo
  {
  public string city { get; set; }
  public string cityId { get; set; }
  public string parent { get; set; }
  public string upadataTime { get; set; }
  }
  //今天信息
  public class Data
  {
  public string shidu { get; set; }
  public string pm25 { get; set; }
  public
  1c6f3
  string pm10 { get; set; }
  public string quality { get; set; }
  public string wendu { get; set; }
  public string ganmao { get; set; }
  public WeatherData yesterday { get; set; }
  public List<WeatherData> forecast { get; set; }
  
  }
  //预测信息
  public class WeatherData
  {
  
  public string date { get; set; }
  public string sunrise { get; set; }
  public string high { get; set; }
  public string low { get; set; }
  //空气污染指数
  public string aqi { get; set; }
  public DateTime ymd { get; set; }
  public string week { get; set; }
  //风向
  public string fx { get; set; }
  //风级
  public string fl { get; set; }
  //天气
  public string type { get; set; }
  //提醒
  public string notice { get; set; }
  }
  #endregion

  1. 转化成对象：

  public class JsonStrDel
  {
  
  public JsonInfo WeatherMessage;
  public void DataDel(string jsonMessage )
  {
  //反序列化
  WeatherMessage=JsonConvert.DeserializeObject<JsonInfo>(jsonMessage);
  }
  }

源代码下载：https://github.com/xiaoxianrou8/GetPost