C#獲取中國天氣網免費天氣預報信息

中國天氣網接口地址：”http://wthrcdn.etouch.cn/WeatherApi?citykey=” + weatherCityCode（為城市code）; 

下面是轉化過程中我們需要用到的方法（序列化的實體類在文章結尾附）

   string weatherInfoUrl = "http://wthrcdn.etouch.cn/WeatherApi?citykey=" + weatherCityCode;
   string weatherstr = getHtml2(weatherInfoUrl);
   resp tempInfo = XmlDeSeralizer<resp>(weatherstr);

　　

轉化過程中需要用到的方法

        private static string GetHtml(string url)
        {
            StringBuilder s = new StringBuilder(102400);
            HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url);
            wr.Headers[HttpRequestHeader.AcceptEncoding] = "gzip, deflate";
            HttpWebResponse response = (HttpWebResponse)wr.GetResponse();
            Head(response);
            GZipStream g = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress);
            byte[] d = new byte[20480];
            int l = g.Read(d, 0, 20480);
            while (l > 0)
            {
                s.Append(Encoding.UTF8.GetString(d, 0, l));
                l = g.Read(d, 0, 20480);
            }
            return s.ToString();
        }

        private static void Head(HttpWebResponse r)
        {
            string[] keys = r.Headers.AllKeys;
            for (int i = 0; i < keys.Length; ++i)
            {
                Console.WriteLine(keys[i] + "   " + r.Headers[keys[i]]);
            }
        }

        public static T XmlDeSeralizer<T>(string xmlStr) where T : class,new()
        {
            XmlSerializer xs = new XmlSerializer(typeof(T));
            using (StringReader reader = new StringReader(xmlStr))
            {
                return xs.Deserialize(reader) as T;
            }
        }

天氣實體類

    public class resp
    {
        public string city { get; set; }
        public string updatetime { get; set; }
        public string wendu { get; set; }
        public string fengli { get; set; }
        public string shidu { get; set; }
        public string fengxiang { get; set; }
        public environment environment { get; set; }
        public alarm alarm { get; set; }
        public List<weather> forecast { set; get; }
    }
    public class environment
    {
        public string aqi { get; set; }
        public string pm25 { get; set; }
        public string suggest { get; set; }
        public string quality { get; set; }
        public string MajorPollutants { get; set; }
        public string time { get; set; }
    }
    public class alarm
    {
        public string cityName { get; set; }
        public string alarmType { get; set; }
        public string alarmDegree { get; set; }
        public string alarmText { get; set; }
        public string alarm_details { get; set; }
        public string standard { get; set; }
        public string suggest { get; set; }
    }
    public class weather
    {
        public string date { get; set; }
        public string high { get; set; }
        public string low { get; set; }
        public climate day { get; set; }
        public climate night { get; set; }
    }
    public class climate
    {
        public string type { get; set; }
        public string fengxiang { get; set; }
        public string fengli { get; set; }
    }