C#获取中国天气网免费天气预报信息

中国天气网接口地址：”http://wthrcdn.etouch.cn/WeatherApi?citykey=” + weatherCityCode（为城市code）;

下面是转化过程中我们需要用到的方法（序列化的实体类在文章结尾附）

   string weatherInfoUrl = "http://wthrcdn.etouch.cn/WeatherApi?citykey=" + weatherCityCode;

   string weatherstr = getHtml2(weatherInfoUrl);

   resp tempInfo = XmlDeSeralizer<resp>(weatherstr);

转化过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;

            }

        }

天气实体类

    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; }

    }

巴特西

C#获取中国天气网免费天气预报信息

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